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EW D OR N 6 5 (R) D F L5 1 ND E /E MME EL5164 O R EC SEE NOT Data Sheet
E SI G
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EL5192, EL5192A
May 16, 2007 FN7181.3
600MHz Current Feedback Amplifier with Enable
The EL5192 and EL5192A are current feedback amplifiers with a very high bandwidth of 600MHz. This makes these amplifiers ideal for todays high speed video and monitor applications. With a supply current of just 6mA and the ability to run from a single supply voltage from 5V to 10V, the amplifiers are also ideal for hand held, portable or battery-powered equipment. The EL5192A also incorporates an enable and disable function to reduce the supply current to 100A typical per amplifier. Allowing the CE pin to float or applying a low logic level will enable the amplifier. The EL5192 is offered in the 5 Ld SOT-23 package and the EL5192A is available in the 6 Ld SOT-23 as well as the industry-standard 8 Ld SOIC packages. Both operate over the industrial temperature range of -40C to +85C.
Features
* 600MHz -3dB bandwidth * 6mA supply current * Single and dual supply operation, from 5V to 10V supply span * Fast enable/disable (EL5192A only) * Available in SOT-23 packages * Dual (EL5292) and triple (EL5392) available * High speed, 1GHz product available (EL5191) * Low power, 4mA, 300MHz product available (EL5193, EL5293, and EL5393) * Pb-Free plus anneal available (RoHS compliant)
Applications
* Video amplifiers * Cable drivers * RGB amplifiers * Test equipment * Instrumentation * Current to voltage converters
Pinouts
EL5192A (8 LD SOIC) TOP VIEW
NC 1 IN- 2 IN+ 3 VS- 4 8 CE 7 VS+ 6 OUT 5 NC
+
EL5192A (6 LD SOT-23) TOP VIEW
OUT 1 VS- 2 IN+ 3 6 VS+ 5 CE 4 INOUT 1 VS- 2
EL5192 (5 LD SOT-23) TOP VIEW
5 VS+
+-
+IN+ 3 4 IN-
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2004, 2005, 2007. All Rights Reserved All other trademarks mentioned are the property of their respective owners.
EL5192, EL5192A Ordering Information
PART NUMBER EL5192CW-T7 EL5192CW-T7A EL5192CWZ-T7 (Note) EL5192CWZ-T7A (Note) EL5192ACW-T7 EL5192ACW-T7A EL5192ACWZ-T7 (Note) EL5192ACWZ-T7A (Note) EL5192ACS EL5192ACS-T7 EL5192ACS-T13 EL5192ACSZ (Note) EL5192ACSZ-T7 (Note) EL5192ACSZ-T13 (Note) O O BAAT BAAT O O BAAS BAAS 5192ACS 5192ACS 5192ACS 5192ACS Z 5192ACS Z 5192ACS Z PART MARKING TAPE & REEL 7" (3k pcs) 7" (250 pcs) 7" (3k pcs) 7" (250 pcs) 7" (3k pcs) 7" (250 pcs) 7" (3k pcs) 7" (250 pcs) 7" 13" 7" 13" 5 Ld SOT-23 5 Ld SOT-23 5 Ld SOT-23 (Pb-free) 5 Ld SOT-23 (Pb-free) 6 Ld SOT-23 6 Ld SOT-23 6 Ld SOT-23 (Pb-free) 6 Ld SOT-23 (Pb-free) 8 Ld SOIC (150 mil) 8 Ld SOIC (150 mil) 8 Ld SOIC (150 mil) 8 Ld SOIC (150 mil) (Pb-free) 8 Ld SOIC (150 mil) (Pb-free) 8 Ld SOIC (150 mil) (Pb-free) PACKAGE PKG. DWG. # MDP0038 MDP0038 MDP0038 MDP0038 MDP0038 MDP0038 MDP0038 MDP0038 MDP0027 MDP0027 MDP0027 MDP0027 MDP0027 MDP0027
NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate termination finish, which are 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.
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FN7181.3 May 16, 2007
EL5192, EL5192A
Absolute Maximum Ratings (TA = +25C)
Supply Voltage between VS+ and VS- . . . . . . . . . . . . . . . . . . . . . 11V Pin Voltages . . . . . . . . . . . . . . . . . . . . . . . . . VS- -0.5V to VS+ +0.5V Maximum Continuous Output Current . . . . . . . . . . . . . . . . . . . 50mA Operating Junction Temperature . . . . . . . . . . . . . . . . . . . . . . +125C
Thermal Information
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Curves Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65C to +150C Ambient Operating Temperature . . . . . . . . . . . . . . . .-40C to +85C Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below http://www.intersil.com/pbfree/Pb-FreeReflow.asp
CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typical values are for information purposes only. Unless otherwise noted, all tests are at the specified temperature and are pulsed tests, therefore: TJ = TC = TA
Electrical Specifications
PARAMETER AC PERFORMANCE BW -3dB Bandwidth
VS+ = +5V, VS- = -5V, RF = 750 for AV = 1, RF = 375 for AV = 2, RL = 150, TA = +25C Unless Otherwise Specified. CONDITIONS MIN TYP MAX UNIT
DESCRIPTION
AV = +1 AV = +2
600 300 25
MHz MHz MHz V/s ns nV/Hz pA/Hz pA/Hz %
BW1 SR tS eN iNiN+ dG dP
0.1dB Bandwidth Slew Rate 0.1% Settling Time Input Voltage Noise IN- Input Current Noise IN+ Input Current Noise Differential Gain Error (Note 1) Differential Phase Error (Note 1) AV = +2 AV = +2 VO = -2.5V to +2.5V, AV = +2 VOUT = -2.5V to +2.5V, AV = -1 2400
2800 9 4.1 20 50 0.015 0.04
DC PERFORMANCE VOS TCVOS ROL Offset Voltage Input Offset Voltage Temperature Coefficient Transimpedance Measured from TMIN to TMAX 200 -10 1 5 400 10 mV V/C k
INPUT CHARACTERISTICS CMIR CMRR -ICMR +IIN -IIN RIN CIN Common Mode Input Range Common Mode Rejection Ratio - Input Current Common Mode Rejection + Input Current - Input Current Input Resistance Input Capacitance 3 42 -6 -60 -35 3 2 37 0.5 3.3 50 6 60 35 V dB A/V A A k pF
OUTPUT CHARACTERISTICS VO Output Voltage Swing RL = 150 to GND RL = 1k to GND IOUT SUPPLY ISON Supply Current - Enabled No load, VIN = 0V 5 6 7.5 mA Output Current RL = 10 to GND 3.4 3.8 95 3.7 4.0 120 V V mA
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FN7181.3 May 16, 2007
EL5192, EL5192A
Electrical Specifications
PARAMETER ISOFF PSRR -IPSR VS+ = +5V, VS- = -5V, RF = 750 for AV = 1, RF = 375 for AV = 2, RL = 150, TA = +25C Unless Otherwise Specified. (Continued) CONDITIONS No load, VIN = 0V DC, VS = 4.75V to 5.25V DC, VS = 4.75V to 5.25V 55 -2 MIN TYP 100 75 2 MAX 150 UNIT A dB A/V
DESCRIPTION Supply Current - Disabled Power Supply Rejection Ratio - Input Current Power Supply Rejection
ENABLE (EL5192A ONLY) tEN tDIS IIHCE IILCE VIHCE VILCE NOTE: 1. Standard NTSC test, AC signal amplitude = 286mVP-P, f = 3.58MHz Enable Time Disable Time CE Pin Input High Current CE Pin Input Low Current CE Input High Voltage for Powerdown CE Input Low Voltage for Powerdown CE = VS+ CE = VSVS+ -1 VS+ -3 40 600 0.8 0 6 -0.1 ns ns A A V V
4
FN7181.3 May 16, 2007
EL5192, EL5192A Typical Performance Curves
Non-Inverting Frequency Response (Gain) SOT-23 Package 6 AV=1 Normalized Magnitude (dB) 2 AV=2 0 AV=1 AV=2 Phase () -2 AV=5 -6 AV=10 -10 RF=750 RL=150 -14 1M 10M 100M Frequency (Hz) 1G -360 1M -270 RF=750 RL=150 10M 100M Frequency (Hz) 1G -90 AV=5 AV=10 90 Non-Inverting Frequency Response (Phase)
-180
Inverting Frequency Response (Gain) 6 AV=-1 AV=-2 90
Inverting Frequency Response (Phase)
Normalized Magnitude (dB)
2
0
AV=-1
AV=-5 -6
Phase ()
-2
-90
AV=-2 AV=-5
-180
-10 RF=375 RL=150 -14 1M 10M 100M Frequency (Hz) 1G
-270 RF=375 RL=150 -360 1M 10M 100M Frequency (Hz) 1G
Frequency Response for Various CIN10 2pF added Normalized Magnitude (dB) 1pF added 2 Normalized Magnitude (dB) 6 2 6
Frequency Response for Various RL
RL=150
RL=100
-2
RL=500
-2
0pF added
-6
-6
AV=2 RF=375 RL=150 10M 100M Frequency (Hz) 1G
-10 AV=2 RF=375 -14 1M 10M 100M Frequency (Hz) 1G
-10 1M
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FN7181.3 May 16, 2007
EL5192, EL5192A Typical Performance Curves
Frequency Response for Various CL 14 6 250 Normalized Magnitude (dB) Normalized Magnitude (dB) 10 12pF added 2 475 -2 620 750 375
(Continued)
Frequency Response for Various RF
6
8pF added
2
-6
-2
AV=2 RF=375 RL=150 10M
0pF added
-10
AV=2 RG=RF RL=150 10M 100M Frequency (Hz) 1G
-6 1M
100M Frequency (Hz)
1G
-14 1M
Group Delay vs Frequency 3.5 3 2.5 Group Delay (ns) 2 1.5 1 0.5 0 1M AV=1 RF=750 AV=2 RF=375 Normalized Magnitude (dB) 2 6
Frequency Response for Various Common-Mode Input Voltages
VCM=3V
VCM=0V
-2
VCM=-3V
-6
-10
AV=2 RF=375 RL=150 10M 100M Frequency (Hz) 1G
10M
100M Frequency (Hz)
1G
-14 1M
Transimpedance (ROL) vs Frequency 10M 0 1M Phase -90 Magnitude () Phase () 100k -180 10k Gain 1k -360 100 1k 10k 100k 1M Frequency (Hz) 10M 100M 1G -270 0 PSRR/CMRR (dB) 20
PSRR and CMRR vs Frequency
PSRR+
-20 PSRR-40
-60
CMRR
-80 10k
100k
1M
10M
100M
1G
Frequency (Hz)
6
FN7181.3 May 16, 2007
EL5192, EL5192A Typical Performance Curves
(Continued)
-3dB Bandwidth vs Supply Voltage for Non-Inverting Gains 800 RF=750 RL=150 -3dB Bandwidth (MHz) -3dB Bandwidth (MHz) 600 AV=1 350 300 250
-3dB Bandwidth vs Supply Voltage for Inverting Gains
AV=-1
AV=-2 200 AV=-5 150 100 50 0 RF=375 RL=150 5 6 7 8 9 10
400
200
AV=2 AV=5 AV=10
0 5 6 7 8 9 10 Total Supply Voltage (V)
Total Supply Voltage (V)
Peaking vs Supply Voltage for Non-Inverting Gains 4 RF=750 RL=150 3 Peaking (dB) AV=1 Peaking (dB) 3 4
Peaking vs Supply Voltage for Inverting Gains
AV=-1
RF=375 RL=150
2
2
AV=-2
1
AV=2
1 AV=10 AV=-5
0 5 6 7 8 9 10 Total Supply Voltage (V)
0 5 6 7 8 9 10 Total Supply Voltage (V)
Non-inverting Frequency Response (Gain) SO8 Package 6 90
Non-inverting Frequency Response (Phase) SO8 Package
Normalized Magnitude (dB)
2
AV=1
0
AV=1
AV=2
AV=2 -6 AV=5 -10 RF=750 RL=150 -14 1M 10M AV=10
Phase ()
-2
-90 AV=5 -180 AV=10
-270 RF=750 RL=150 1G 1.6G -360 1M 10M 100M Frequency (Hz) 1G
100M Frequency (Hz)
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FN7181.3 May 16, 2007
EL5192, EL5192A Typical Performance Curves
Inverting Frequency Response (Gain) SO8 Package 6 AV=-1 Normalized Magnitude (dB) 2 AV=-2 0 AV=-1 90
(Continued)
Inverting Frequency Response (Phase) SO8 Package
Phase ()
-2
AV=-5
-90 AV=-2 -180 AV=-5
-6
-10 RF=375 RL=150 -14 1M 10M 100M Frequency (Hz) 1G
-270 RF=375 RL=150 -360 1M 10M 100M Frequency (Hz) 1G
-3dB Bandwidth vs Temperature for Non-Inverting Gains 1400 1200 -3dB Bandwidth (MHz) 1000 800 600 400 AV=2 200 0 -40 AV=5 AV=10 AV=1 RF=750 RL=150 400 -3dB Bandwidth (MHz) 500
-3dB Bandwidth vs Temperature for Inverting Gains
AV=-1
RF=375 RL=150
300
AV=-2
200 AV=-5 100
10
60 Ambient Temperature (C)
110
160
0 -40
10
60 Ambient Temperature (C)
110
160
Peaking vs Temperature 2 RL=150 1.5 AV=1 1k
Voltage and Current Noise vs Frequency
Voltage Noise (nV/Hz) Current Noise (pA/Hz)
100 i n-
in+
Peaking (dB)
1 AV=-1 0.5 AV=-2
10
en
0 AV=2 -0.5 -50 1 100
-50
0 Ambient Temperature (C)
50
100
1k
10k
100k
1M
10M
Frequency (Hz)
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FN7181.3 May 16, 2007
EL5192, EL5192A Typical Performance Curves
(Continued)
Closed Loop Output Impedance vs Frequency 100 10
Supply Current vs Supply Voltage
10 Output Impedance () Supply Current (mA)
8
1
6
0.1
4
0.01
2
0.001 100 1k 10k 100k 1M 10M 100M 1G Frequency (Hz)
0 0 2 4 6 Supply Voltage (V) 8 10 12
2nd and 3rd Harmonic Distortion vs Frequency -20 -30 Harmonic Distortion (dBc) -40 -50 -60 -70 -80 -90 -100 1 10 Frequency (MHz) 100 3rd Order Distortion 2nd Order Distortion AV=+2 VOUT=2VP-P RL=100 30 25 Input Power Intercept (dBm) 20 15 10 5 0 -5 -10
Two-Tone 3rd Order Input Referred Intermodulation Intercept (IIP3) AV=+2 RL=150
AV=+2 RL=100 100 Frequency (MHz) 200
-15 10
Differential Gain/Phase vs DC Input Voltage at 3.58MHz 0.03 0.02 0.01 dG (%) or dP () 0 dG -0.01 -0.02 -0.03 -0.04 -0.05 -1 -0.5 0 DC Input Voltage 0.5 1 dG (%) or dP () AV=2 RF=RG=375 RL=150 0.03 0.02 dP 0.01 0 -0.01 -0.02 -0.03 -0.04 -0.05
Differential Gain/Phase vs DC Input Voltage at 3.58MHz AV=1 RF=750 RL=500
dP
dG
-0.06 -1
-0.5
0 DC Input Voltage
0.5
1
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FN7181.3 May 16, 2007
EL5192, EL5192A Typical Performance Curves
(Continued)
Output Voltage Swing vs Frequency THD<1% 9 8 Output Voltage Swing (VPP) 7 6 5 4 3 2 1 0 1 AV=2 10 Frequency (MHz) 100 RL=150 RL=500 Output Voltage Swing (VPP) 8 10
Output Voltage Swing vs Frequency THD<0.1%
RL=150 6
RL=500
4
2 AV=2 1 10 Frequency (MHz) 100
0
Small Signal Step Response
Large Signal Step Response
VS=5V RL=150 AV=2 RF=RG=375
VS=5V RL=150 AV=2 RF=RG=375
200mV/div
1V/div
10ns/div
10ns/div
Settling Time vs Settling Accuracy 25 AV=2 RF=RG=375 RL=150 VSTEP=5VP-P output 500
Transimpedance (RoI) vs Temperature
20 Settling Time (ns)
450
15 RoI (k) 400
10
5
350
0 0.01
0.1 Settling Accuracy (%)
1
300 -40
10
60 Die Temperature (C)
110
160
10
FN7181.3 May 16, 2007
EL5192, EL5192A Typical Performance Curves
PSRR and CMRR vs Temperature 90 80 70 60 CMRR 50 40 30 20 10 -40 ICMR/IPSR (A/V) PSRR/CMRR (dB) PSRR 2.5 2 1.5 1 0.5 0 ICMR-0.5 -1 -40 IPSR
(Continued)
ICMR and IPSR vs Temperature
ICMR+
10
60 Die Temperature (C)
110
160
10
60 Die Temperature (C)
110
160
Offset Voltage vs Temperature 3 60 40 2 20 Input Current (A) VOS (mV) 1
Input Current vs Temperature
IB0 -20 -40 -60 IB+
0
-1
-2 -40
10
60 Die Temperature (C)
110
160
-80 -40
10
60 Temperature (C)
110
160
Positive Input Resistance vs Temperature 50 45 40 Supply Current (mA) 35 RIN+ (k) 30 25 20 15 10 5 0 -40 10 60 Temperature (C) 110 160 8 7 6 5 4 3 2 1
Supply Current vs Temperature
0 -40
10
60 Temperature (C)
110
160
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FN7181.3 May 16, 2007
EL5192, EL5192A Typical Performance Curves
(Continued)
Positive Output Swing vs Temperature for Various Loads 4.2 4.1 1k 4 VOUT (V) VOUT (V) 3.9 3.8 3.7 3.6 3.5 -40 150 -3.7 -3.8 -3.9 -4 -4.1 -3.5 -3.6
Negative Output Swing vs Temperature for Various Loads
150
1k
10
50 Temperature (C)
110
160
-4.2 -40
10
60 Temperature (C)
110
160
Output Current vs Temperature 135 4600 4400 130 Sink Slew Rate (V/S) 4200 4000 3800 3600 3400 3200 115 -40
Slew Rate vs Temperature
AV=2 RF=RG=375 RL=150
IOUT (mA)
125 Source 120
10
60 Die Temperature (C)
110
160
3000 -40
10
60 Die Temperature (C)
110
160
Enable Response
Disable Response
500mV/div
500mV/div
5V/div 5V/div
20ns/div
400ns/div
Typical Performance Curves
12
(Continued)
FN7181.3 May 16, 2007
EL5192, EL5192A
1.4 POWER DISSIPATION (W) 1.2
JEDEC JESD51-7 HIGH EFFECTIVE THERMAL CONDUCTIVITY TEST BOARD 0.5 POWER DISSIPATION (W) 0.45
JEDEC JESD51-7 HIGH EFFECTIVE THERMAL CONDUCTIVITY TEST BOARD
1 909mW 0.8 0.6 0.4 0.2 0 0 25 50 75 85 100 125 150 AMBIENT TEMPERATURE (C) SO8 JA=110C/W
0.4 435mW 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 0 25 50 75 85 100 125 150 AMBIENT TEMPERATURE (C) SOT23-5/6 JA=230C/W
1 POWER DISSIPATION (W) 0.9 0.8
JEDEC JESD51-3 LOW EFFECTIVE THERMAL CONDUCTIVITY TEST BOARD POWER DISSIPATION (W)
0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0
JEDEC JESD51-3 LOW EFFECTIVE THERMAL CONDUCTIVITY TEST BOARD 391mW
SO =2
0.7 625mW 0.6 0.5 0.4 0.3 0.2 0.1 0 0 25 50
SO8 JA=160C/W
JA
T2 3 56 -5-6 C /W
75 85 100
125
150
0
25
50
75 85 100
125
150
AMBIENT TEMPERATURE (C)
AMBIENT TEMPERATURE (C)
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FN7181.3 May 16, 2007
EL5192, EL5192A Pin Descriptions
8 Ld SOIC 1, 5 2 4 4 5 Ld SOT-23 6 Ld SOT-23 PIN NAME NC INFUNCTION Not connected Inverting input
VS+
EQUIVALENT CIRCUIT
IN+
IN-
VSCircuit 1
3 4 6
3 2 1
3 2 1
IN+ VSOUT
Non-inverting input Negative supply Output
(See circuit 1)
VS+
OUT
VSCircuit 2
7 8
5
6 5
VS+ CE
Positive supply Chip enable
VS+
CE
VSCircuit 3
Applications Information
Product Description
The EL5192 is a current-feedback operational amplifier that offers a wide -3dB bandwidth of 600MHz and a low supply current of 6mA per amplifier. The EL5192 works with supply voltages ranging from a single 5V to 10V and they are also capable of swinging to within 1V of either supply on the output. Because of their current-feedback topology, the EL5192 does not have the normal gain-bandwidth product associated with voltage-feedback operational amplifiers. Instead, its -3dB bandwidth to remain relatively constant as closed-loop gain is increased. This combination of high bandwidth and low power, together with aggressive pricing make the EL5192 the ideal choice for many low-power/highbandwidth applications such as portable, handheld, or battery-powered equipment. For varying bandwidth needs, consider the EL5191 with 1GHz on a 9mA supply current or the EL5193 with 300MHz on a 4mA supply current. Versions include single, dual, and triple amp packages with 5 Ld SOT-23, 16 Ld QSOP, and 8 Ld or 16 Ld SOIC outlines.
Power Supply Bypassing and Printed Circuit Board Layout
As with any high frequency device, good printed circuit board layout is necessary for optimum performance. Low impedance ground plane construction is essential. Surface mount components are recommended, but if leaded components are used, lead lengths should be as short as possible. The power supply pins must be well bypassed to reduce the risk of oscillation. The combination of a 4.7F tantalum capacitor in parallel with a 0.01F capacitor has been shown to work well when placed at each supply pin. For good AC performance, parasitic capacitance should be kept to a minimum, especially at the inverting input. (See the Capacitance at the Inverting Input section) Even when ground plane construction is used, it should be removed from the area near the inverting input to minimize any stray capacitance at that node. Carbon or Metal-Film resistors are acceptable with the Metal-Film resistors giving slightly less peaking and bandwidth because of additional series inductance. Use of sockets, particularly for the SOIC package, should be avoided if possible. Sockets add parasitic inductance and capacitance which will result in additional peaking and overshoot.
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FN7181.3 May 16, 2007
EL5192, EL5192A
Disable/Power-Down
The EL5192A amplifier can be disabled placing its output in a high impedance state. When disabled, the amplifier supply current is reduced to < 150A. The EL5192A is disabled when its CE pin is pulled up to within 1V of the positive supply. Similarly, the amplifier is enabled by floating or pulling its CE pin to at least 3V below the positive supply. For 5V supply, this means that an EL5192A amplifier will be enabled when CE is 2V or less, and disabled when CE is above 4V. Although the logic levels are not standard TTL, this choice of logic voltages allows the EL5192A to be enabled by tying CE to ground, even in 5V single supply applications. The CE pin can be driven from CMOS outputs.
Supply Voltage Range and Single-Supply Operation
The EL5192 has been designed to operate with supply voltages having a span of greater than 5V and less than 10V. In practical terms, this means that the EL5192 will operate on dual supplies ranging from 2.5V to 5V. With singlesupply, the EL5192 will operate from 5V to 10V. As supply voltages continue to decrease, it becomes necessary to provide input and output voltage ranges that can get as close as possible to the supply voltages. The EL5192 has an input range which extends to within 2V of either supply. So, for example, on 5V supplies, the EL5192 has an input range which spans 3V. The output range of the EL5192 is also quite large, extending to within 1V of the supply rail. On a 5V supply, the output is therefore capable of swinging from -4V to +4V. Single-supply output range is larger because of the increased negative swing due to the external pull-down resistor to ground.
Capacitance at the Inverting Input
Any manufacturer's high-speed voltage- or current-feedback amplifier can be affected by stray capacitance at the inverting input. For inverting gains, this parasitic capacitance has little effect because the inverting input is a virtual ground, but for non-inverting gains, this capacitance (in conjunction with the feedback and gain resistors) creates a pole in the feedback path of the amplifier. This pole, if low enough in frequency, has the same destabilizing effect as a zero in the forward open-loop response. The use of largevalue feedback and gain resistors exacerbates the problem by further lowering the pole frequency (increasing the possibility of oscillation.) The EL5192 has been optimized with a 375 feedback resistor. With the high bandwidth of these amplifiers, these resistor values might cause stability problems when combined with parasitic capacitance, thus ground plane is not recommended around the inverting input pin of the amplifier.
Video Performance
For good video performance, an amplifier is required to maintain the same output impedance and the same frequency response as DC levels are changed at the output. This is especially difficult when driving a standard video load of 150, because of the change in output current with DC level. Previously, good differential gain could only be achieved by running high idle currents through the output transistors (to reduce variations in output impedance.) These currents were typically comparable to the entire 6mA supply current of each EL5192 amplifier. Special circuitry has been incorporated in the EL5192 to reduce the variation of output impedance with current output. This results in dG and dP specifications of 0.015% and 0.04, while driving 150 at a gain of 2. Video performance has also been measured with a 500 load at a gain of +1. Under these conditions, the EL5192 has dG and dP specifications of 0.03% and 0.05, respectively.
Feedback Resistor Values
The EL5192 has been designed and specified at a gain of +2 with RF approximately 375. This value of feedback resistor gives 300MHz of -3dB bandwidth at AV=2 with 2dB of peaking. With AV=-2, an RF of 375 gives 275MHz of bandwidth with 1dB of peaking. Since the EL5192 is a current-feedback amplifier, it is also possible to change the value of RF to get more bandwidth. As seen in the curve of Frequency Response for Various RF and RG, bandwidth and peaking can be easily modified by varying the value of the feedback resistor. Because the EL5192 is a current-feedback amplifier, its gain-bandwidth product is not a constant for different closedloop gains. This feature actually allows the EL5192 to maintain about the same -3dB bandwidth. As gain is increased, bandwidth decreases slightly while stability increases. Since the loop stability is improving with higher closed-loop gains, it becomes possible to reduce the value of RF below the specified 375 and still retain stability, resulting in only a slight loss of bandwidth with increased closed-loop gain.
Output Drive Capability
In spite of its low 6mA of supply current, the EL5192 is capable of providing a minimum of 95mA of output current. With a minimum of 95mA of output drive, the EL5192 is capable of driving 50 loads to both rails, making it an excellent choice for driving isolation transformers in telecommunications applications.
Driving Cables and Capacitive Loads
When used as a cable driver, double termination is always recommended for reflection-free performance. For those applications, the back-termination series resistor will decouple the EL5192 from the cable and allow extensive capacitive drive. However, other applications may have high capacitive loads without a back-termination resistor. In these applications, a small series resistor (usually between 5 and 50) can be placed in series with the output to eliminate
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FN7181.3 May 16, 2007
EL5192, EL5192A
most peaking. The gain resistor (RG) can then be chosen to make up for any gain loss which may be created by this additional resistor at the output. In many cases it is also possible to simply increase the value of the feedback resistor (RF) to reduce the peaking.
Current Limiting
The EL5192 has no internal current-limiting circuitry. If the output is shorted, it is possible to exceed the Absolute Maximum Rating for output current or power dissipation, potentially resulting in the destruction of the device.
Power Dissipation
With the high output drive capability of the EL5192, it is possible to exceed the 125C Absolute Maximum junction temperature under certain very high load current conditions. Generally speaking when RL falls below about 25, it is important to calculate the maximum junction temperature (TJMAX) for the application to determine if power supply voltages, load conditions, or package type need to be modified for the EL5192 to remain in the safe operating area. These parameters are calculated as follows:
T JMAX = T MAX + ( JA x n x PD MAX )
where: TMAX = Maximum ambient temperature JA = Thermal resistance of the package n = Number of amplifiers in the package PDMAX = Maximum power dissipation of each amplifier in the package PDMAX for each amplifier can be calculated as follows:
V OUTMAX PD MAX = ( 2 x V S x I SMAX ) + ( V S - V OUTMAX ) x --------------------------RL
where: VS = Supply voltage ISMAX = Maximum supply current of 1A VOUTMAX = Maximum output voltage (required) RL = Load resistance
16
FN7181.3 May 16, 2007
EL5192, EL5192A Typical Application Circuits
Inverting 200mA Output Current Distribution Amplifier
0.1F +5V IN+ INVS-5V 375 5 0.1F VS+
OUT
0.1F +5V IN+ INVS-5V 375 VIN 375 0.1F VS+
VOUT
OUT
5
Fast-Settling Precision Amplifier
375
375 0.1F +5V IN+ INVS0.1F VS+
OUT
375
-5V
0.1F 375 VIN +5V IN+ INVS-5V 0.1F VS+
OUT
VOUT
17
FN7181.3 May 16, 2007
EL5192, EL5192A Typical Application Circuits
(Continued)
Differential Line Driver/Receiver
0.1F +5V IN+ INVS-5V 375 162 VOUT+ 0.1F +5V IN+ INVS-5V 375 VIN 375 375 Transmitter -5V 375 Receiver 0.1F VS+ 240 +5V OUT 162 VOUT1k 0.1F IN+ INVS0.1F VS+ 1k 0.1F 0.1F 375 0.1F -5V 375 VS+ +5V IN+ OUT INVS0.1F VS+ 0.1F
OUT
OUT
VOUT
18
FN7181.3 May 16, 2007
EL5192, EL5192A Small Outline Package Family (SO)
A D N (N/2)+1 h X 45
A E E1 PIN #1 I.D. MARK c SEE DETAIL "X"
1 B
(N/2) L1
0.010 M C A B e C H A2 GAUGE PLANE A1 0.004 C 0.010 M C A B b DETAIL X
SEATING PLANE L 4 4
0.010
MDP0027
SMALL OUTLINE PACKAGE FAMILY (SO) INCHES SYMBOL A A1 A2 b c D E E1 e L L1 h N NOTES: 1. Plastic or metal protrusions of 0.006" maximum per side are not included. 2. Plastic interlead protrusions of 0.010" maximum per side are not included. 3. Dimensions "D" and "E1" are measured at Datum Plane "H". 4. Dimensioning and tolerancing per ASME Y14.5M-1994 SO-8 0.068 0.006 0.057 0.017 0.009 0.193 0.236 0.154 0.050 0.025 0.041 0.013 8 SO-14 0.068 0.006 0.057 0.017 0.009 0.341 0.236 0.154 0.050 0.025 0.041 0.013 14 SO16 (0.150") 0.068 0.006 0.057 0.017 0.009 0.390 0.236 0.154 0.050 0.025 0.041 0.013 16 SO16 (0.300") (SOL-16) 0.104 0.007 0.092 0.017 0.011 0.406 0.406 0.295 0.050 0.030 0.056 0.020 16 SO20 (SOL-20) 0.104 0.007 0.092 0.017 0.011 0.504 0.406 0.295 0.050 0.030 0.056 0.020 20 SO24 (SOL-24) 0.104 0.007 0.092 0.017 0.011 0.606 0.406 0.295 0.050 0.030 0.056 0.020 24 SO28 (SOL-28) 0.104 0.007 0.092 0.017 0.011 0.704 0.406 0.295 0.050 0.030 0.056 0.020 28 TOLERANCE MAX 0.003 0.002 0.003 0.001 0.004 0.008 0.004 Basic 0.009 Basic Reference Reference NOTES 1, 3 2, 3 Rev. M 2/07
19
FN7181.3 May 16, 2007
EL5192, EL5192A SOT-23 Package Family
e1 A N 6 4
MDP0038
D
SOT-23 PACKAGE FAMILY MILLIMETERS SYMBOL A A1 SOT23-5 1.45 0.10 1.14 0.40 0.14 2.90 2.80 1.60 0.95 1.90 0.45 0.60 5 SOT23-6 1.45 0.10 1.14 0.40 0.14 2.90 2.80 1.60 0.95 1.90 0.45 0.60 6 TOLERANCE MAX 0.05 0.15 0.05 0.06 Basic Basic Basic Basic Basic 0.10 Reference Reference Rev. F 2/07 NOTES:
E1 2 3
E
A2 b c
0.20 C
0.15 C D 2X 5 e B b NX 1 2 3 2X 0.20 M C A-B D
D E E1 e e1 L L1 N
0.15 C A-B 2X C D
1
3
A2 SEATING PLANE 0.10 C NX A1
1. Plastic or metal protrusions of 0.25mm maximum per side are not included. 2. Plastic interlead protrusions of 0.25mm maximum per side are not included. 3. This dimension is measured at Datum Plane "H". 4. Dimensioning and tolerancing per ASME Y14.5M-1994. 5. Index area - Pin #1 I.D. will be located within the indicated zone (SOT23-6 only).
(L1)
H
6. SOT23-5 version has no center lead (shown as a dashed line).
A
GAUGE PLANE c L 0 +3 -0
0.25
All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems. Intersil Corporation's quality certifications can be viewed 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 20
FN7181.3 May 16, 2007

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