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MegaQTM: An Automatic Composite Video Equalizer, Fully-Adaptive to 1 Mile (1600m)
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
The ISL59601, ISL59602, ISL59603, ISL59604, and ISL59605 (the "MegaQTM" product family) are single-channel adaptive equalizers designed to automatically compensate for long runs of Cat 5/6 or RG-59 cable, producing high quality video output with no user interaction. The ISL59601 equalizes Cat 5/6 up to a distance of 1000 feet (300 meters), while the ISL59605 equalizes up to 5300 feet (1600 meters). MegaQTM compensates for high frequency cable losses of up to 60dB (ISL59605) at 5MHz as well as source amplitude variations up to 3dB. The ISL59601, ISL59602, ISL59603, ISL59604, and ISL59605 operate from a single +5V supply. Inputs are AC-coupled and internally DC-restored. The output can drive 2VP-P into two source-terminated 75 loads (AC-coupled or DC-coupled).
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
Features
* ISL59605 Equalizes Up to 1 Mile (1600m) of Cat 5/6 and Up to 6000 Feet (1800m) of RG-59 * Fully Automatic, Stand-Alone Operation - No User Adjustment Required * 8kV ESD Protection on All Inputs * Automatic Cable Type Compensation * Compatible with Color or Monochrome, NTSC or PAL Signals * Automatic Polarity Detection and Inversion * Compensates for 3dB Source Variation (in Addition to Cable Losses) * Optional Serial Interface Adds Additional Functionality * 5MHz -3dB Bandwidth * Works with Single-Ended or Differential Inputs * Output Drives Up to Two 150 Video Loads
Related Literature*
(see page 26)
* AN1598 "Installation and Operation of Intersil's ISL59605IRZ-EVALZ Evaluation Boards" (Stand-Alone Evaluation Board) * AN1588 "Installation and Operation of Intersil's ISL59605-SPI-EVALZ Evaluation Boards" (Evaluation Board with USB Serial Interface)
Applications*(see page 26)
* Surveillance Video * Video Distribution
Typical Application
November 23, 2010 FN6739.1
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas Inc. 2010. All Rights Reserved Intersil (and design) and MegaQ are trademarks owned by Intersil Corporation or one of its subsidiaries. All other trademarks mentioned are the property of their respective owners.
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
Pin Configuration
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605 (20 LD QFN) TOP VIEW
FREEZE 16 15 VREF THERMAL PAD (SOLDER TO GND) 14 GND 13 VIDEO OUT 12 CFB 11 VDD2 6 GND 7 EQ_DISABLE 8 COLOR 9 INVERT 10 LOCKED
20 GND 1 VDD1 2
19
18
17
IN+ 3 GND 4 IN- 5
Block Diagram
CLAMP AND IN+ INDIFFERENTIAL TO SINGLE-ENDED CONVERTER EQUALIZER LPF AMP VIDEO OUT
GND
SEN
SCK
SD
CFB
VREF GEN
DIGITAL INTERFACE
EQ_DISABLE
INVERT
LOCKED
COLOR
FREEZE
VREF
SEN
SCK
2
SD
FN6739.1 November 23, 2010
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
Pin Descriptions
PIN NUMBER INPUTS 3 IN+ High impedance analog input. This is the positive differential video input. Input signals are externally AC-coupled with an external 1.0F capacitor. See Applications Information section for information regarding input network for Cat x and coax cables. High impedance analog input. This is the negative differential video input. Input signals are externally AC-coupled with an external 1.0F capacitor. See Applications Information section for information regarding input network for Cat x and coax cables. Analog input. Bypass to ground with a 1500pF capacitor and connect to VIDEO OUT via a 0.022F capacitor in series with a 300 resistor. PIN NAME DESCRIPTION
5
IN-
12 OUTPUTS 13 DIGITAL I/O 7
CFB
VIDEO OUT Single-ended video output. The internal AGC sets this level to 2VP-P for a nominal 1VP-P (pre-cable) video source.
EQ_DISABLE Digital Input. Equalizer Disable. 0: Normal Operation 1: Disables the equalizer to allow for insertion of upstream data onto the signal path, e.g. RS-485. COLOR Digital I/O. Color Indicator/Override. 0: Monochrome 1: Color When used as an output, this pin indicates whether the incoming signal does or does not have a colorburst. When used as an input, this pin forces the state machine to into monochrome or color mode. See Figure 49 and associated text for more information on functionality. When COLOR is not externally driven, it is an output pin with a 13k (typical) output impedance. It is capable of driving 5V, high-impedance CMOS logic. Note: The COLOR indicator may be invalid for monochrome signals over greater than ~4800 feet. The device will still equalize properly if this occurs. Digital I/O. Polarity Indicator/Override. 0: Nominal Polarity. 1: Inverted Polarity. When used as an output, this pin indicates the polarity of the incoming signal. When used as an input, this pin controls whether or not the input signal is inverted in the signal chain. See Figure 48 and associated text for more information on functionality. When INVERT is not externally driven, it is an output pin with a 13k (typical) output impedance. It is capable of driving 5V, high-impedance CMOS logic. In stand-alone mode, toggling this pin high-low-high or low-high-low will make the equalizer reacquire the signal. Digital Output. 0: Signal is not equalized (or not present). 1: Signal is equalized and settled. Note: The LOCKED indicator may be invalid for monochrome signals over greater than ~4800 feet. The device will still equalize properly if this occurs. Digital Input. Freezes equalizer in its current EQ state. 0: Continuous Update 1: Freeze EQ in current state. For stand-alone operations, connect FREEZE to the LOCKED pin to enter the recommended Lock Until Reset mode.
8
9
INVERT
10
LOCKED
16
FREEZE
SERIAL INTERFACE 18 19 20 SEN SCK SD Digital Input. Serial Interface Enable. Digital Input. Serial Interface Clock Signal. Digital I/O. Serial Interface Data Signal.
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FN6739.1 November 23, 2010
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
Pin Descriptions (Continued)
PIN NUMBER POWER 2 11 15 1, 4, 6, 14, 17 THERMAL PAD EP PAD Solder the exposed thermal PAD to ground for best thermal and electrical performance. VDD1 VDD2 VREF GND +5V power supply for analog equalizer. Isolate from +5V source with a ferrite bead and bypass to ground with a 0.1F capacitor in parallel with a 4.7F capacitor. +5V power supply for output amplifier. Bypass to ground with a 0.1F capacitor. Internally generated 2.5V reference. Bypass to ground with a low-ESR 0.47F capacitor. Do not attach anything else to this pin. Ground PIN NAME DESCRIPTION
Ordering Information
PART NUMBER (Notes 1, 2, 3) ISL59601IRZ ISL59601IRZ-T7 ISL59601IRZ-T7A ISL59602IRZ ISL59602IRZ-T7 ISL59602IRZ-T7A ISL59603IRZ ISL59603IRZ-T7 ISL59603IRZ-T7A ISL59604IRZ ISL59604IRZ-T7 ISL59604IRZ-T7A ISL59605IRZ ISL59605IRZ-T7 ISL59605IRZ-T7A ISL5960x-EVALZ ISL5960x-SPI-EVALZ NOTES: 1. Please refer to TB347 for details on reel specifications. 2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. 3. For Moisture Sensitivity Level (MSL), please see device information page for ISL59601, ISL59602, ISL59603, ISL59604, ISL59605. For more information on MSL please see techbrief TB363. PART MARKING 596 01IRZ 596 01IRZ 596 01IRZ 596 02IRZ 596 02IRZ 596 02IRZ 596 03IRZ 596 03IRZ 596 03IRZ 596 04IRZ 596 04IRZ 596 04IRZ 596 05IRZ 596 05IRZ 596 05IRZ MAX EQ LENGTH 1000 feet 1000 feet 1000 feet 2000 feet 2000 feet 2000 feet 3000 feet 3000 feet 3000 feet 4000 feet 4000 feet 4000 feet 5300 feet 5300 feet 5300 feet TEMP RANGE (C) -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 PACKAGE (Pb-free) 20 Ld QFN (4x4mm) 20 Ld QFN (4x4mm) 20 Ld QFN (4x4mm) 20 Ld QFN (4x4mm) 20 Ld QFN (4x4mm) 20 Ld QFN (4x4mm) 20 Ld QFN (4x4mm) 20 Ld QFN (4x4mm) 20 Ld QFN (4x4mm) 20 Ld QFN (4x4mm) 20 Ld QFN (4x4mm) 20 Ld QFN (4x4mm) 20 Ld QFN (4x4mm) 20 Ld QFN (4x4mm) 20 Ld QFN (4x4mm) PKG. DWG. # L20.4x4C L20.4x4C L20.4x4C L20.4x4C L20.4x4C L20.4x4C L20.4x4C L20.4x4C L20.4x4C L20.4x4C L20.4x4C L20.4x4C L20.4x4C L20.4x4C L20.4x4C
Stand-alone (no USB I/O) evaluation board Evaluation board with serial interface
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FN6739.1 November 23, 2010
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
Table of Contents
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Thermal Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Serial Timing Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Typical Performance Over 1000 Feet of Cat 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Typical Performance Over 2000 Feet of Cat 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Typical Performance Over 3000 Feet of Cat 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Typical Performance Over 4000 Feet of Cat 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Typical Performance Over 5200 Feet of Cat 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Typical Performance Over 1000 Feet of Copper-Core RG-59 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Typical Performance Over 2000 Feet of Copper-Core RG-59 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Typical Performance Over 3000 Feet of Copper-Core RG-59 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Typical Performance Over 4000 Feet of Copper-Core RG-59 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Typical Performance Over 5000 Feet of Copper-Core RG-59 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Typical Performance Over 6000 Feet of Copper-Core RG-59 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 MegaQTM Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Equalization for Various Cable Types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Application Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 UTP Application Circuit . . . . . . . . . . . . . . . . . . Coax Input Circuit . . . . . . . . . . . . . . . . . . . . . Dual UTP/Coax Input Circuit . . . . . . . . . . . . . . Input Multiplexing . . . . . . . . . . . . . . . . . . . . . Stand-Alone Operation and Configuration . . . . . Lock Until RESET . . . . . . . . . . . . . . . . . . . . Continuous Update . . . . . . . . . . . . . . . . . . . Polarity Detection and Correction . . . . . . . . . . . The COLOR Pin . . . . . . . . . . . . . . . . . . . . . . . Monochrome Video Signals . . . . . . . . . . . . . . . Security Cameras . . . . . . . . . . . . . . . . . . . . . . Additional Equalization Modes Available With the Continuous Update . . . . . . . . . . . . . . . . . . . Lock Until RESET . . . . . . . . . . . . . . . . . . . . Lock Until Signal Loss . . . . . . . . . . . . . . . . . Manual Length . . . . . . . . . . . . . . . . . . . . . . Serial Interface Protocol . . . . . . . . . . . . . . . . . Write Operation . . . . . . . . . . . . . . . . . . . . . Read Operation . . . . . . . . . . . . . . . . . . . . . ............ ............ ............ ............ ............ ............ ............ ............ ............ ............ ............ Serial Interface . ............ ............ ............ ............ ............ ............ ............ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 21 21 21 . 21 21 21 22 . 22 22 22 23 23 23 23 . 23 23 . 23 . 23
Register Listing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Bypassing and Layout Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 General PowerPAD Design Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Package Outline Drawing.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
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FN6739.1 November 23, 2010
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
Absolute Maximum Ratings
(TA = +25C)
Thermal Information
Thermal Resistance (Typical) JA (C/W) JC (C/W) 20 Ld QFN Package (Notes 4, 5) . . 40 3.7 Storage Temperature . . . . . . . . . . . . . . . -65C to +150C Ambient Operating Temperature . . . . . . . . . -40C to +85C Die Junction Temperature . . . . . . . . . . . . . . . . . . . +150C Pb-Free Reflow Profile . . . . . . . . . . . . . . . . . .see link below http://www.intersil.com/pbfree/Pb-FreeReflow.asp
Supply Voltage between VDD and GND . . . . . . . . . . . . 5.75V Maximum Continuous Output Current . . . . . . . . . . . . . 50mA Maximum Voltage on any Pin . . . . GND - 0.3V to VDD + 0.3V ESD Rating Human Body Model (tested per JESD22-A114) . . . . 8,000V Machine Model (Tested per JESD22-A115) . . . . . . . . 600V CDM Model (Tested per JESD22-C101). . . . . . . . . . 2,000V Latch Up (Tested per JESD78; Class II, Level A) . . . . . . . . 100mA
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and result in failures not covered by warranty.
NOTES: 4. JA is measured in free air with the component mounted on a high effective thermal conductivity test board with "direct attach" features. See Tech Brief TB379. 5. For JC, the "case temp" location is the center of the exposed metal pad on the package underside.
Electrical Specifications
VDD = VDD1 = VDD2 = +5V, source video amplitude before any cable loss = 1VP-P, cable type = Cat 5, cable length = 0 feet, RL = 150 (75 series + 75 load to ground), TA = +25C, exposed die plate = 0V, unless otherwise specified. Max cable length = 1000 feet for ISL59601, 2000 feet for ISL59602, 3000 feet for ISL59603, 4000 feet for ISL59604, and 5300 feet for ISL59605. CONDITIONS MIN TYP MAX UNIT
PARAMETER SUPPLY VDD IS1 IS2 PSRRDC AC PERFORMANCE BW DG
DESCRIPTION
VDD Operating Range VDD1 Supply Current VDD2 Supply Current Power Supply Rejection Ratio
4.5
5.0 40 30 60
5.5 60 45
V mA mA dB
-3dB Bandwidth Differential Gain
Full power Cable length = max, 20IRE Sub Carrier on 100% ramp Cable length = max, 20IRE Sub Carrier on 100% ramp
5 1
MHz %
DP
Differential Phase
1
DC PERFORMANCE VBL Output Blanking/Backporch Level Measured at VIDEO OUT pin 0.82 0.95 1.05 V
INPUT CHARACTERISTICS VINDIFF_MIN VINDIFF_MAX VCM-MIN VCM-MAX SNR Minimum Correctable Peak-to-Peak Measured at the source-end Signal Swing of cable, before cable losses Maximum Correctable Peak-toPeak Signal Swing Min Common Mode Input Voltage Max Common Mode Input Voltage Signal-to-Noise Ratio, NTC-7 weighted filter EQ = 0 feet EQ = 1,000 feet EQ = 2,000 feet EQ = 3,000 feet EQ = 4,000 feet EQ = 5,300 feet Measured at the source-end of cable, before cable losses 0.7 1.4 1 4 -67 -67 -65 -64 -61 -54 VP-P VP-P V V dB rms dB rms dB rms dB rms dB rms dB rms
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FN6739.1 November 23, 2010
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
Electrical Specifications
VDD = VDD1 = VDD2 = +5V, source video amplitude before any cable loss = 1VP-P, cable type = Cat 5, cable length = 0 feet, RL = 150 (75 series + 75 load to ground), TA = +25C, exposed die plate = 0V, unless otherwise specified. Max cable length = 1000 feet for ISL59601, 2000 feet for ISL59602, 3000 feet for ISL59603, 4000 feet for ISL59604, and 5300 feet for ISL59605. (Continued) CONDITIONS 0 feet cable 2,500 feet cable MIN TYP -50 -35 25 MAX UNIT dB dB A
PARAMETER CMRR
DESCRIPTION Common-mode Rejection Ratio at fIN = 100kHz Input Clamp Current
IClamp
OUTPUT CHARACTERISTICS AGC-ACC IOUT tEN-EQ tDIS-EQ AGC Accuracy Output Drive Current Enable-to-Equalization On Time Disable-to-Equalization Off Time Accuracy of sync tip amplitude relative to 600mV 0.5 40 500 500 dB mA ns ns
LOGIC CONTROL PINS VIH VIL ILOGIC Logic High Level Logic Low Level Logic Input Current EQ_DISABLE, FREEZE, SD, SCK, SEN INVERT, COLOR 10 500 2.0 0.8 V V A A
Serial Timing
PARAMETER tCS tLEAD tSU tH tWH tWL tRI tFI tLAG tV fSCK DESCRIPTION Serial Enable Deselect Time Lead Time SD, SCK Setup Time SD, SEN, SCK Hold Time SCK High Time SCK Low Time SD, SEN, SCK Rise Time SD, SEN, SCK Fall Time Lag Time SCK Rising Edge to SD Data Valid SCK Frequency Read Operation CONDITIONS MIN 10 10 10 10 100 100 10 10 10 10 5 TYP MAX UNIT ns ns ns ns ns ns ns ns ns ns MHz
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FN6739.1 November 23, 2010
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
Serial Timing Diagram
tCS SEN tLEAD SCK SD 1 t SU 1 2 A6 tH tWH 3 A5 4 A4 fSCK 5 tWL A3 6 A2 7 A1 8 tV A0 9 D7 10 D6
tRI 11 D5 12 D4 13
tFI 14 D2 15
tLAG 16 D0 tCS tLAG 14 15 D1 16 D0
D3
D1
READ OPERATION
SEN SCK SD
tLEAD tSU 0 1 2 A6
tH
3 A5
tWH
fSCK 4 A4 tWL 5 6 A2 7 A1 8 A0 9 D7 10 D6
tRI 11 D5 12 D4 13 D3
tFI
A3
D2
WRITE OPERATION A6:A0 = REGISTER ADDRESS, D7:D0 = DATA TO BE READ/WRITTEN
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FN6739.1 November 23, 2010
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
Typical Performance Over 1000 Feet of Cat 5
FIGURE 1. TEST PATTERN IMAGE AFTER 1000 FEET OF UNCOMPENSATED CAT 5
FIGURE 2. TEST PATTERN IMAGE AFTER 1000 FEET OF CAT 5 WITH ISL59601 (OR BETTER)
200mV/DIV
200mV/DIV
10s/DIV FIGURE 3. MULTIBURST WAVEFORM AFTER 1000 FEET OF UNCOMPENSATED CAT 5
10s/DIV FIGURE 4. MULTIBURST WAVEFORM AFTER 1000 FEET OF CAT 5 WITH ISL59601 (OR BETTER)
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FN6739.1 November 23, 2010
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
Typical Performance Over 2000 Feet of Cat 5
FIGURE 5. TEST PATTERN IMAGE AFTER 2000 FEET OF UNCOMPENSATED CAT 5
FIGURE 6. TEST PATTERN IMAGE AFTER 2000 FEET OF CAT 5 WITH ISL59602 (OR BETTER)
200mV/DIV
200mV/DIV
10s/DIV FIGURE 7. MULTIBURST WAVEFORM AFTER 2000 FEET OF UNCOMPENSATED CAT 5
10s/DIV FIGURE 8. MULTIBURST WAVEFORM AFTER 2000 FEET OF CAT 5 WITH ISL59602 (OR BETTER)
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FN6739.1 November 23, 2010
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
Typical Performance Over 3000 Feet of Cat 5
FIGURE 9. TEST PATTERN IMAGE AFTER 3000 FEET OF UNCOMPENSATED CAT 5
FIGURE 10. TEST PATTERN IMAGE AFTER 3000 FEET OF CAT 5 WITH ISL59603 (OR BETTER)
200mV/DIV
200mV/DIV
10s/DIV FIGURE 11. MULTIBURST WAVEFORM AFTER 3000 FEET OF UNCOMPENSATED CAT 5
10s/DIV FIGURE 12. MULTIBURST WAVEFORM AFTER 3000 FEET OF CAT 5 WITH ISL59603 (OR BETTER)
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FN6739.1 November 23, 2010
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
Typical Performance Over 4000 Feet of Cat 5
FIGURE 13. TEST PATTERN IMAGE AFTER 4000 FEET OF UNCOMPENSATED CAT 5
FIGURE 14. TEST PATTERN IMAGE AFTER 4000 FEET OF CAT 5 WITH ISL59604 (OR BETTER)
200mV/DIV
200mV/DIV
10s/DIV FIGURE 15. MULTIBURST WAVEFORM AFTER 4000 FEET OF UNCOMPENSATED CAT 5
10s/DIV FIGURE 16. MULTIBURST WAVEFORM AFTER 4000 FEET OF CAT 5 WITH ISL59604 (OR BETTER)
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FN6739.1 November 23, 2010
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
Typical Performance Over 5200 Feet of Cat 5
FIGURE 17. TEST PATTERN IMAGE AFTER 5200 FEET OF UNCOMPENSATED CAT 5
FIGURE 18. TEST PATTERN IMAGE AFTER 5200 FEET OF CAT 5 WITH ISL59605
200mV/DIV
200mV/DIV
10s/DIV FIGURE 19. MULTIBURST WAVEFORM AFTER 5200 FEET OF UNCOMPENSATED CAT 5
10s/DIV FIGURE 20. MULTIBURST WAVEFORM AFTER 5200 FEET OF CAT 5 WITH ISL59605
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FN6739.1 November 23, 2010
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
Typical Performance Over 1000 Feet of Copper-Core RG-59
FIGURE 21. TEST PATTERN IMAGE AFTER 1000 FEET OF UNCOMPENSATED RG-59 COAX
FIGURE 22. TEST PATTERN IMAGE AFTER 1000 FEET OF RG-59 COAX WITH ISL59601 (OR BETTER)
200mV/DIV
200mV/DIV
10s/DIV FIGURE 23. MULTIBURST WAVEFORM AFTER 1000 FEET OF UNCOMPENSATED RG-59 COAX
10s/DIV FIGURE 24. MULTIBURST WAVEFORM AFTER 1000 FEET OF RG-59 COAX WITH ISL59601 (OR BETTER)
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Typical Performance Over 2000 Feet of Copper-Core RG-59
FIGURE 25. TEST PATTERN IMAGE AFTER 2000 FEET OF UNCOMPENSATED RG-59 COAX
FIGURE 26. TEST PATTERN IMAGE AFTER 2000 FEET OF RG-59 COAX WITH ISL59602 (OR BETTER)
200mV/DIV
200mV/DIV
10s/DIV FIGURE 27. MULTIBURST WAVEFORM AFTER 2000 FEET OF UNCOMPENSATED RG-59 COAX
10s/DIV FIGURE 28. MULTIBURST WAVEFORM AFTER 2000 FEET OF RG-59 COAX WITH ISL59602 (OR BETTER)
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FN6739.1 November 23, 2010
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Typical Performance Over 3000 Feet of Copper-Core RG-59
FIGURE 29. TEST PATTERN IMAGE AFTER 3000 FEET OF UNCOMPENSATED RG-59 COAX
FIGURE 30. TEST PATTERN IMAGE AFTER 3000 FEET OF RG-59 COAX WITH ISL59602 (OR BETTER)
200mV/DIV
200mV/DIV
10s/DIV FIGURE 31. MULTIBURST WAVEFORM AFTER 3000 FEET OF UNCOMPENSATED RG-59 COAX
10s/DIV FIGURE 32. MULTIBURST WAVEFORM AFTER 3000 FEET OF RG-59 COAX WITH ISL59602 (OR BETTER)
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FN6739.1 November 23, 2010
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Typical Performance Over 4000 Feet of Copper-Core RG-59
FIGURE 33. TEST PATTERN IMAGE AFTER 4000 FEET OF UNCOMPENSATED RG-59 COAX
FIGURE 34. TEST PATTERN IMAGE AFTER 4000 FEET OF RG-59 COAX WITH ISL59602 (OR BETTER)
200mV/DIV
200mV/DIV
10s/DIV FIGURE 35. MULTIBURST WAVEFORM AFTER 4000 FEET OF UNCOMPENSATED RG-59 COAX
10s/DIV FIGURE 36. MULTIBURST WAVEFORM AFTER 4000 FEET OF RG-59 COAX WITH ISL59602 (OR BETTER)
17
FN6739.1 November 23, 2010
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
Typical Performance Over 5000 Feet of Copper-Core RG-59
FIGURE 37. TEST PATTERN IMAGE AFTER 5000 FEET OF UNCOMPENSATED RG-59 COAX
FIGURE 38. TEST PATTERN IMAGE AFTER 5000 FEET OF RG-59 COAX WITH ISL59603 (OR BETTER)
200mV/DIV
200mV/DIV
10s/DIV FIGURE 39. MULTIBURST WAVEFORM AFTER 5000 FEET OF UNCOMPENSATED RG-59 COAX
10s/DIV FIGURE 40. MULTIBURST WAVEFORM AFTER 5000 FEET OF RG-59 COAX WITH ISL59603 (OR BETTER)
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FN6739.1 November 23, 2010
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Typical Performance Over 6000 Feet of Copper-Core RG-59
FIGURE 41. TEST PATTERN IMAGE AFTER 6000 FEET OF UNCOMPENSATED RG-59 COAX
FIGURE 42. TEST PATTERN IMAGE AFTER 6000 FEET OF RG-59 COAX WITH ISL59603 (OR BETTER)
200mV/DIV
200mV/DIV
10s/DIV FIGURE 43. MULTIBURST WAVEFORM AFTER 6000 FEET OF UNCOMPENSATED RG-59 COAX
10s/DIV FIGURE 44. MULTIBURST WAVEFORM AFTER 6000 FEET OF RG-59 COAX WITH ISL59603 (OR BETTER)
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Functional Description
MegaQTM Overview
MegaQTM is a fully automated, stand-alone equalizer for composite video transmitted over UTP (Unshielded Twisted Pair, i.e. Cat 5, Cat 6, etc.) or coaxial (RG-59) cables. Differential video signals sent over long distances of twisted pair wire exhibit large high frequency attenuation, resulting in loss of high frequency detail/blurring. The exact loss characteristic is a complex function of wire gauge, length, composition, and coupling to adjacent conductors. The video signal can be restored by applying a filter with the exact inverse transfer function to the far end signal. MegaQTM is designed to compensate for the losses due to long cables, and incorporates the functionality and flexibility to match a wide variety of cable types and loss characteristics. While MegaQTM was designed and optimized for stand-alone operation, with no need for any external control of any kind, it has an optional SPI serial interface with some additional features. See "Additional Equalization Modes Available With the Serial Interface" on page 23 for more information on the features and operation of the serial interface.
Equalization for Various Cable Types
TABLE 1. CABLE TYPES AND LENGTHS CABLE TYPE Copper-Core CAT5/CAT5e CAT6 Coaxial - RG-59 CAT2/CAT3 (telephone wire) Belden IMSA Spec 39-2 581718 (3-pair traffic light cable) Non-Copper-Core* CAT5/CAT5e CCA (Copper-Coated Aluminum Core) Coaxial - RG-59 CCS (Copper-Coated Steel Core) 2000 feet 1500 feet 5300 feet 5600 feet 6000 feet 3000 feet 5300 feet MAXIMUM LENGTH SUPPORTED
*Image quality will be significantly improved over unequalized cable, but there will still be some image smearing due to the high resistance of the core material.
OPTIONAL FERRITE BEAD - ~1k AT 100MHz, ~105mA DC CURRENT C7 0.1F DIFFERENTIAL VIDEO INPUT+ R3 R1 1k DIFFERENTIAL VIDEO INPUTR2 C1 VDD1 IN+ VDD2 OUT ISL59601 INISL59602 ISL59603 ISL59604 ISL59605 VREF CFB FB1 C8
+5V C9 4.7F
0.1F
1.0F
R6 75.0 300 R5 C4 1500pF C5 0.022F
49.9 49.9 C2 1.0F
VIDEO OUT
INTERNALLY GENERATED C6 0.47F
SERIAL INTERFACE (OPTIONAL)
SEN SCK SD
EQ_DISABLE COLOR INVERT LOCKED FREEZE GND FREEZES EQ ONCE LOCK IS ACHIEVED
FIGURE 45. APPLICATION CIRCUIT FOR UTP CABLE
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Application Information
UTP Application Circuit
Figure 45 shows the complete schematic for a MegaQTM equalizer configured for UTP cable. The input signal is terminated into the network formed by R1, R2, and R3. The original datasheet and evaluation boards recommended different values for the termination network as well as an additional resistor and capacitor that were not necessary. C1 and C2 AC-couple the signal into MegaQTM. On the output side, C5, R5, and C4 form a compensation network, while R6 provides 75 source-termination for the video output. MegaQTM has an native gain of 6dB, so when VIDEO OUT is terminated into 75 (the input to a DVR, TV, etc.), R6 and the 75 terminator form a 2:1 divider, producing standard video amplitude across the 75 terminator.
Input Multiplexing
Placing a semiconductor multiplexer in front of this part may increase high frequency attenuation and noise. However a low-capacitance mechanical relay may be acceptable. Note that changing from one channel to another in Lock Until Reset mode will require a reset (INVERT toggle) to trigger equalization of the new channel (see "Lock Until RESET" on page 21).
UTP IN+ COAX UTP INSW1 (Close for COAX) C10 0.1F R3 R1 1k R2 C1 1.0F 37.4 37.4 C2 1.0F ININ+ MegaQTM
Coax Input Circuit
Figure 46 shows the input termination recommended for coaxial cables, which is the same as that used for UTP cables except for the addition of C10, which bypasses high-frequency noise on the coax ground line to system ground. This allows the coax ground to be independent of the system at low frequencies (DC to 50/60Hz) to accommodate differences in the ground potential of the remote video source(s). The original datasheet and evaluation boards had a more complex network that did not perform as well as this one, but they can be easily modified (with component substitutions only) to match this one.
COAX R3 R1 1k C10 0.1F R2 C1 1.0F 37.4 MegaQTM 37.4 C2 1.0F ININ+
FIGURE 47. APPLICATION CIRCUIT FOR COAX CABLE
For best performance, do not multiplex the inputs to the equalizer - this can further degrade the signal. Instead, multiplex at the output after equalization has been performed.
Stand-Alone Operation and Configuration
In its default stand-alone configuration, MegaQTM features two modes of automatic cable equalization: Lock Until Reset and Continuous Update. Lock Until Reset is the recommended mode for most applications. LOCK UNTIL RESET In the Lock Until Reset mode, once MegaQTM finds the optimum equalization and the LOCKED signal goes high, the equalization is frozen and will not change until either the power is cycled or the INVERT signal is toggled, which initiates a re-equalization of the input signal. Reequalization is usually only necessary during device/system evaluation - in normal operation MegaQTM powers-up, acquires and equalizes the signal, and continues to equalize until/unless it is powered-down. If the signal is lost in Lock Until Reset mode, the LOCKED pin will not go low until/unless the device is reset by toggling the INVERT pin. A reset should only be necessary if the length or type of cable was changed without cycling power. To enable the Lock Until Reset mode, tie the LOCKED output pin to the FREEZE input pin as shown in Figure 45 on page 20. To generate a reset (and trigger a re-equalization), toggle the external INVERT pin. Depending on the initial state of INVERT, this would be a high-low-high or low-high-low sequence. CONTINUOUS UPDATE In the Continuous Update mode, MegaQTM will continuously try to find the optimum equalization solution. When the equalization has settled for 100 sequential video lines with no changes, the LOCKED pin
FN6739.1 November 23, 2010
FIGURE 46. APPLICATION CIRCUIT FOR COAX CABLE
Dual UTP/Coax Input Circuit
If desired, it is also possible to support both UTP and coax cables with the same PCB layout. Since the termination network is very similar for both UTP and coax, this becomes as simple as having both connectors tied to the input network, adding a switch to introduce C10 when in coax mode, and making a minor compromise on the termination values when using UTP. Note that only coax or UTP should be connected at any one time - this circuit does not multiplex between them. Terminating UTP into 75 instead of 100 results in no detectable change in the quality of the output signal, while terminating 75 coax into 100 does significantly degrade the video. Terminating UTP into 75 will slightly attenuate the input signal, however MegaQTM's AGC capability compensates for the loss. 21
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
will go high. However once lock is achieved, noise and average-picture-level changes may cause the device to unlock, causing some image perturbation while MegaQTM re-equalizes. The Continuous Update mode is enabled whenever the FREEZE pin is set to a logic low (grounded). colorburst or not. The state of the color signal is then used to tell the signal processing logic whether or not it can rely on the presence of a colorburst signal. A logic high indicates a color signal; a logic low indicates monochrome.
Polarity Detection and Correction
MegaQTM features polarity detection and correction, automatically detecting incorrectly-wired input signals and inverting the signal inside the IC as necessary. The detected polarity is indicated by the state of the INVERT pin. The INVERT pin has 2 modes of operation. It is typically used to indicate whether or not the incoming signal is inverted (the "+" signal on the "-" input and vice-versa). The state of the invert signal is then used to tell the signal processing logic whether or not to invert the signal in the signal path. A logic high on INVERT indicates that the positive differential input signal is on IN- (pin 5) and the negative differential input signal is on IN+ (pin 3). A logic low indicates nominal polarity. However the unique design of the INVERT I/O pin (Figure 48) also allows MegaQTM's internal inversion detector to be overdriven externally, forcing MegaQTM to invert or not invert the signal regardless of the state of the inversion detection function. This is not necessary in normal operation, but it may improve performance in particularly noisy environments when the polarity of the signal is guaranteed to be correct.
FIGURE 49. COLOR PIN STRUCTURE
However the unique design of the COLOR I/O pin (Figure 49) also allows MegaQTM's internal color detector to be overdriven externally. This is not necessary in normal operation, but it may improve performance in particularly noisy environments when the signal type is predetermined.
Monochrome Video Signals
MegaQTM will equalize monochrome signals to the same distance as color signals. However due to the high level of noise past ~4800 feet, above ~4800 feet the COLOR and LOCKED indicators may become invalid for monochrome signals. The device will still equalize properly if this occurs.
Security Cameras
MegaQTM is ideal for security camera installations. The automatic adaptive equalizer doesn't need any active silicon on the transmit side of the cable, enabling upgrading of older installations without having to touch the installed camera base, including older monochrome cameras. MegaQTM automatically adjusts for wiring polarity errors as well as adjusts for optimum image quality. These features eliminates the need for the installer to make any adjustments. With an extended equalization range of 5300ft, the ISL59605 enables cameras to be placed in even more remote locations, enabling coverage of up to three square miles from a single monitoring station.
FIGURE 48. INVERT PIN STRUCTURE
The COLOR Pin
The color pin has 2 modes of operation. It is typically used to indicate whether or not the incoming signal has a
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Additional Equalization Modes Available With the Serial Interface
In addition to the Lock Until Reset and Continuous Update modes, software control of MegaQTM through the I2C interface adds a Lock Until Signal Loss mode and a Manual Equalization mode. Note: When controlling MegaQTM through the I2C interface, the external FREEZE pin must be tied to ground (logic low). Failure to keep FREEZE at a logic low will prevent the software controls from working properly. All of the equalization modes are selected via the two "Locking Mode/Manual Length Enable" register bits, 0x05[1:0]. CONTINUOUS UPDATE Continuous Update mode is entered by setting address 0x05[1:0] = 00b. Continuous Update behavior is the same as described in the stand-alone mode. LOCK UNTIL RESET Lock Until Reset mode is entered by setting address 0x05[1:0] = 10b. Lock Until Reset behavior is the same as described in the stand-alone mode, with the exception of how to generate a reset. To generate a reset via software, select Continuous Update mode and then return to Lock Until Reset mode (register 0x05[1:0] = 00b then 10b). Toggling INVERT (either the hardware pin or the software bit) will not cause a reset/re-equalization event. LOCK UNTIL SIGNAL LOSS Lock Until Signal Loss mode is entered by setting address 0x05[1:0] = 01b. Lock Until Signal Loss can only be enabled via the I2C interface. In the Lock Until Signal Loss mode, MegaQTM will freeze the equalization once the LOCKED pin goes high (in the same way as Lock Until Reset). Unlike the "Settled" state in the Continuous Update mode, only a signal loss lasting more than 1ms (typical) will cause MegaQTM to re-equalize the signal when it returns. In this sense, the Lock Until Signal Loss mode can be considered as halfway between the Continuous Update mode and the Lock Until Reset mode. The Lock Until Signal Loss mode is useful, for example, when testing or demonstrating a system by plugging in multiple different length cables - it eliminates the need to also generate a reset. To prevent potentially undesired reequalization, signal losses lasting less than 1ms (typical) do not trigger a re-equalization. MANUAL LENGTH Manual Length mode is entered by setting address 0x05[1:0] = 11b. Manual Length mode allows the forcing of specific cable lengths, DC gains, etc. (see the Register Listing on the next page). However since many of MegaQTM's automatic functions and adjustments are disabled in Manual Length mode, performance is almost always worse than what is achieved in any of the automatic modes. For example, automatic polarity correction is disabled so the polarity must be manually set using the INVERT bit. There is no practical reason to ever use Manual Length mode in normal operation.
Serial Interface Protocol
While MegaQTM is designed to work as a stand-alone equalizer, it does have a serial interface that can be used to control it and monitor its state. The serial interface is used to read and write the configuration registers. It uses three signals (SCK, SD, and SEN) for programming. The serial clock can operate up to 5MHz (5Mbits/s). The "Serial Timing Diagram" on page 8 shows the timing of serial I/O. A transaction begins when the host microcontroller takes SEN (serial enable) high. The first 8 bits on the SD (serial data) pin are latched by MegaQTM on the rising edge of SCK (serial clock) to form the address byte. The MSB of the address byte indicates whether the operation is a read (1) or a write (0), and the next seven bits indicate which register is to be read from or written to. Each read and write operation consists of 16 bits: 8 bits for an address byte followed by 8 bits of data. See the "Serial Timing Diagram" on page 8 for more details on using the SPI interface.
TABLE 2. ADDRESS BYTE FORMAT 0 = Write 1 = Read (MSB) A6 A5 A4 A3 A2 A1 A0 (LSB)
WRITE OPERATION After the address byte is clocked in, the next 8 bits should contain the data to be sent to the register identified in the address byte. READ OPERATION After the rising edge of the 8th clock after the address byte is clocked in, the microcontroller should tristate the SD line so MegaQTM can begin to output data on the SD pin (from the register identified in the address byte), beginning on the 9th rising edge of SCK. The data should be latched on the falling edge of SCK to allow enough time for the data to settle. See ""Serial Timing Diagram" on page 8 for more details on how to read from the registers.
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Register Listing
ADDRESS 0x00 0x01 REGISTER (DEFAULT VALUE) Device ID (0x31) Signal Status (N/A) BIT(S) 3:0 7:4 0 1 2 FUNCTION NAME Device Revision Device ID Signal Present DLL Locked Signal Polarity 0x3 0: A signal is not present at the input 1: A signal is present at the input 0: DLL is not locked 1: DLL is locked 0: Inverted Polarity 1: Nominal Polarity This bit is only valid if the INVERT pin is connected as an output. If INVERT is overdriven, this value may not reflect the polarity of the input signal. 0: Signal is monochrome 1: Signal has a colorburst 0: Signal (if present) is within normal range 1: Signal appears to be overloaded 0: EQ is not settled, though DLL may be locked. 1: EQ has stabilized and equalization achieved. Manual Length Control; 0x0 through 0x3F, 64 feet per bit. 0x0: 0 feet. 0x3F: 5280 feet This register sets the EQ setting when MegaQTM is in manual length mode (reg 0x05[1:0] = 11). Note that the length in this register is correct for Cat 5 cable only. 0x00: Maximum DC Gain (+3dB) 0x20: Mid-Scale 0dB 0x3F: Minimum DC Gain (-3dB) This register sets the DC Gain when the device is in manual length mode (reg 0x05[1:0] = 11). 0: Use value of FREEZE pin. 1: Use value in "Freeze Value" bit If Freeze Select = 1, then: 0: Equalization is not frozen 1: Equalization is frozen at current setting. If Freeze Select = 0, then this bit is ignored. 0: Use value of EQ_DISABLE pin. 1: Use value in "Eq-Disable Value" bit If Eq-Disable Select = 1, then: 0: Equalizer is enabled 1: Equalizer is disabled (allows data to be sent upstream over cable pair connected to inputs) If Eq-Disable Select = 0, then this bit is ignored. 0: Use value of COLOR pin 1: Use value in "Color Value" bit If Color Select = 1, then 0: Monochrome Mode 1: Color Mode If Color Select = 0, then this bit is ignored. 0: Use value of INVERT pin. 1: Use value in "Invert Value" bit If Invert Select = 1, then 0: Incoming signal is not inverted 1: Incoming signal is inverted If Invert Select = 0, then this bit is ignored. DESCRIPTION 0 = initial silicon, 1 = first revision, etc.
3 4 5 0x02 Manual Length(0x00) 5:0
Color Detected Signal Overloaded Settled Manual Length
0x03
Manual DC Gain (0x20)
5:0
Manual DC Gain
0x04
Pin Overrides (0x00)
0 1
Freeze Select Freeze Value
2 3
Eq-Disable Select Eq-Disable Value
4 5
Color Select Color Value
6 7
Invert Select Invert Value
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Register Listing (Continued)
ADDRESS 0x05 REGISTER (DEFAULT VALUE) Equalization Control (0x00) BIT(S) 1:0 FUNCTION NAME Locking Mode/Manual Length Enable DESCRIPTION 00 = Continuous Monitoring 01 = Lock Until Signal Loss* 10 = Lock Until Reset 11 = Manual Length** *Signal must be missing for at least 1ms in order to trigger a re-equalization. ** In Manual Length mode the polarity corrector is disabled and the polarity must be set using the INVERT bit or pin. Note: The FREEZE pin must be tied to ground/a logic low for this function to work correctly. 00: No Noise Filtering 01: Min Noise Filtering 10 or 11: Max Noise Filtering Note: Noise Filtering is only available on the ISL59605 0: CAT5/6 Mode 1: Steel Core Coax Mode This bit is ignored in all modes except Manual Length (reg 0x05[1:0] = 11). Set to 1 if using copper-coated steel-core coaxial cable and you are in Manual Length.
3:2
Noise Filter
4
Coax Mode
Bypassing and Layout Considerations
MegaQTM requires a dedicated ground plane in order to function properly. For 2-layer boards, pour a quarter-inch ground plane extending around the device on both the top and bottom layers. Ensure that the ground plane on the bottom layer is a solid plane with no traces cutting through it. Bypass capacitors must be placed as close as possible to the device in order to ensure good performance at longer lengths of equalization. Ensure that the ground connections for the bypass capacitors connect directly to the same uniform ground plane described above.
have a solid connection of the plated-through hole to each plane.
Power Dissipation
The maximum power dissipation allowed in a package is determined according to Equation 1:
T JMAX - T AMAX PD MAX = ------------------------------------------- JA (EQ. 1)
Where: TJMAX = Maximum junction temperature TAMAX = Maximum ambient temperature JA = Thermal resistance of the package The maximum power dissipation actually produced by an IC is the total quiescent supply current times the total power supply voltage, plus the power in the IC due to the load, or: for sourcing use Equation 2:
V OUT PD MAX = V S x I SMAX + ( V S - V OUT ) x --------------RL (EQ. 2)
General PowerPAD Design Considerations
The thermal pad must be connected to the ground plane for heat dissipation. Figure 50 is an example of how to use vias to remove heat from the IC.
FIGURE 50. PCB VIA PATTERN
for sinking use Equation 3:
PD MAX = V S x I SMAX + ( V OUT - V S ) x I LOAD (EQ. 3)
The thermal pad is electrically connected to GND through the high resistance IC substrate. We recommend you fill the thermal pad area with vias. The via array should be centered in the thermal pad and placed such that the center on center spacing is 3x the via radius. Vias should be small, but large enough to allow solder wicking during reflow. Connect all vias to ground. It is important the vias have a low thermal resistance for efficient heat transfer. Do not use "thermal relief" patterns. It is important to 25
Where: VS = Supply voltage ISMAX = Maximum quiescent supply current VOUT = Maximum output voltage of the application RLOAD = Load resistance tied to ground ILOAD = Load current
FN6739.1 November 23, 2010
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
Revision History
The revision history provided is for informational purposes only and is believed to be accurate, but not warranted. Please go to web to make sure you have the latest Rev. DATE 11/19/10 REVISION FN6739.1 CHANGE Modified both "Typical Application" drawings on page 1 to reflect recommended new termination network. Modified Figures 45, 46, and 47 to reflect recommended new termination network. Modified text in "UTP Application Circuit" and "Coax Input Circuit" sections to mention changes to termination network. Added "Dual UTP/Coax Input Circuit" heading Added superscript TM to all MegaQ and trademark statement, pg 1. Added 8kV ESD protection to the Features list Pg24, Register 0x04 of the Register Listing: Fixed Select and Value locations (were swapped for each pin). Last two rows should say "Invert", not "INVERT", EXCEPT for "Use the value of INVERT pin Pg25, address 0x05 of Register listing, 3:2 Noise filter row, change from: 00: No Noise Filtering 01: Min Noise Filtering 1X: Max Noise Filtering to: 00: No Noise Filtering 01: Min Noise Filtering 10 or 11: Max Noise Filtering Note: Noise Filtering is only available on the ISL59605 FN6739.0 Initial Release.
10/21/10
10/8/10
Products
Intersil Corporation is a leader in the design and manufacture of high-performance analog semiconductors. The Company's products address some of the industry's fastest growing markets, such as, flat panel displays, cell phones, handheld products, and notebooks. Intersil's product families address power management and analog signal processing functions. Go to www.intersil.com/products for a complete list of Intersil product families. *For a complete listing of Applications, Related Documentation and Related Parts, please see the respective device information page on intersil.com: ISL59601, ISL59602, ISL59603, ISL59604, ISL59605. To report errors or suggestions for this datasheet, please go to www.intersil.com/askourstaff FITs are available from our website at: http://rel.intersil.com/reports/sear
For additional products, see www.intersil.com/product_tree Intersil products are manufactured, assembled and tested utilizing ISO9000 quality systems as noted in the quality certifications found at www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see www.intersil.com 26
FN6739.1 November 23, 2010
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Package Outline Drawing
L20.4x4C
20 LEAD QUAD FLAT NO-LEAD PLASTIC PACKAGE Rev 0, 11/06
4X 4.00 A B 6 PIN 1 INDEX AREA 15 1 16 2.0 6 PIN #1 INDEX AREA
16X 0.50 20
4.00
2.70 0. 15
11
5
(4X)
0.15 10 6 0.10 M C A B 4 20X 0.25 +0.05 / -0.07
TOP VIEW
20X 0.4 0.10
BOTTOM VIEW
SEE DETAIL "X" 0.10 C C BASE PLANE SEATING PLANE 0.08 C (20X 0. 5)
0. 90 0. 1 (3. 8 TYP) ( 2. 70)
SIDE VIEW
(20X 0. 25) C (20X 0. 6) 0. 00 MIN. 0. 05 MAX. 0. 2 REF 5
TYPICAL RECOMMENDED LAND PATTERN
DETAIL "X"
NOTES: 1. Dimensions are in millimeters. Dimensions in () for Reference Only. 2. Dimensioning and tolerancing conform to AMSE Y14.5m-1994. 3. Unless otherwise specified, tolerance: Decimal 0.05 4. Dimension b applies to the metallized terminal and is measured between 0.15mm and 0.30mm from the terminal tip. 5. Tiebar shown (if present) is a non-functional feature. 6. The configuration of the pin #1 identifier is optional, but must be located within the zone indicated. The pin #1 identifier may be either a mold or mark feature.
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FN6739.1 November 23, 2010

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