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FEATURES
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LTC5564 UltraFastTM 7ns Response Time 15GHz RF Power Detector with Comparator DESCRIPTION
The LTC(R)5564 is a precision, RF power detector for applications in the 600MHz to 15GHz frequency range. The LTC5564 operates with input power levels from -24dBm to 16dBm. A temperature compensated Schottky diode peak detector, gain-selectable operational amplifier, and fast comparator are combined in a small 16-lead 3mm x 3mm QFN package. The RF input signal is peak detected and then sensed by both a comparator and amplifier. The comparator provides a 9ns response time to input levels exceeding VREF along with a latch enable/disable function. The gain selectable operational amplifier provides a 350V/s slew rate and 75MHz of demodulation bandwidth to the analog output. VOUTADJ and VREF pins allow for the adjustment of VOUT offset and VCOMP switch point voltages, respectively.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and UltraFast is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. Higher frequency operation is achievable with reduced performance. Consult the factory for more information.
Temperature Compensated Schottky RF Peak Detector Wide Input Frequency Range: 600MHz to 15GHz Wide Input Power Range: -24dBm to 16dBm 7ns Typical Response Time 75MHz Demodulation Bandwidth Programmable Gain Settings for Improved Sensitivity Adjustable Amplifier Output Offset Voltage High Speed Comparator with Latch Enable: 9ns Typical Response Time 16-Lead 3mm x 3mm QFN Package
APPLICATIONS
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RF Signal Presence Detectors for: 802.11a, 802.11b, 802.11g, 802.15, Optical Data Links, Wireless Data Modems, Wireless and Cable Infrastructure 5.8GHz ISM Band Radios MMDS Microwave Links PA Power Supply Envelope Tracking Control Fast Alarm RF Power Monitor Envelope Detector Ultra-Wideband Radio Radar Detector
SIMPLIFIED BLOCK DIAGRAM
VCCRF VCCA VCCP
VOUT vs Input Power 2.7GHz
3400 3200 VCC = 5V 3000 TA = 25C 2800 2600 GAIN8 2400 2200 GAIN4 2000 1800 1600 1400 GAIN1 1200 1000 800 600 GAIN2 400 200 0 -24 -20 -16 -12 -8 -4 0 4 8 12 16 RFIN POWER (dBm)
5564 TA01b
RFIN
LEN
VP VBIAS
VCOMP VREF
VOUTADJ
+ -
PINS 3, 4, EXPOSED PAD PIN 17
PROGRAMMABLE FEEDBACK ARRAY
5564 BD
VOUT
G1
G0
VOUT OUTPUT VOLTAGE (mV)
+ -
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LTC5564 ABSOLUTE MAXIMUM RATINGS
(Note 1)
PIN CONFIGURATION
TOP VIEW VCOMP 12 VCCA 17 GND 11 VCCP 10 VOUT 9 NC 5 LEN 6 VOUTADJ 7 G0 8 G1 VCCRF VREF NC RFIN 1 NC 2 GND 3 GND 4
Supply Voltages VCCRF = VCCA = VCCP ............................................5.8V RFIN Voltage for VCCRF 5.5V ....................(VCCRF 2V) RFIN Power .........................................................16dBm ICOMP, IVOUT ......................................................... 10mA VOUTADJ, VREF, VCOMP, VOUT, G0, G1, LEN ...-0.3V to VCC Operating Temperature Range (Note 2)....-40C to 85C Max Junction Temperature .................................. 125C Storage Temperature Range .................. -65C to 150C
16 15 14 13
UD PACKAGE 16-LEAD (3mm 3mm) PLASTIC QFN TJMAX = 125C, JA = 68C/W, JC = 7.5C/W EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH LTC5564IUD#PBF TAPE AND REEL LTC5564IUD#TRPBF PART MARKING LFRF PACKAGE DESCRIPTION 16-Lead (3mm x 3mm) Plastic QFN TEMPERATURE RANGE -40C to 85C Consult LTC Marketing for parts specified with wider operating temperature ranges. Consult LTC Marketing for information on non-standard lead based finish parts. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
ELECTRICAL CHARACTERISTICS
PARAMETER Supply Voltage Supply Current Amplifier Characteristics VOUT Output Offset CONDITIONS
The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25C. Supply voltage = VCCRF = VCCA = VCCP = 5V, GAIN1, CLOAD = 10pF , no RF input signal, unless otherwise noted.
MIN
l
TYP 44
MAX 5.5
UNITS V mA
3.0
Supply Voltage = 5V, No RFIN GAIN1 GAIN2 GAIN4 GAIN8 Supply Voltage = 3.3V, No RFIN GAIN1 GAIN2 GAIN4 GAIN8
l l
195 195
290 295 315 360 280 280 290 315
395 395
mV mV mV mV mV mV mV mV
l l
185 185
385 385
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LTC5564 ELECTRICAL CHARACTERISTICS
PARAMETER VOUT Slew Rate Rise/Fall CONDITIONS Supply Voltage = 5V, VOUT 10% to 90%, VOUT = 1.1V (Note 3) GAIN1, Pin = 10dBm to 16dBm GAIN2, Pin = 4dBm GAIN4, Pin = -2dBm GAIN8, Pin = -8dBm Supply Voltage = 3.3V, VOUT 10% to 90%, VOUT = 1.1V (Note 3) GAIN1, Pin = 10dBm to 16dBm GAIN2, Pin = 4dBm GAIN4, Pin = -2dBm GAIN8, Pin = -8dBm Demodulation Bandwidth (Notes 4, 5) GAIN1, VOUT = 500mV GAIN2, VOUT = 500mV GAIN4, VOUT = 500mV GAIN8, VOUT = 500mV GAIN1 VOUT = 100mV (Note 5) (Note 5) Sourcing, RL = 2k Supply Voltage = 5V, RFIN Step to 50% VOUT (Note 3) GAIN1, Pin = 10dBm to 16dBm GAIN2, Pin = 4dBm GAIN4, Pin = -2dBm GAIN8, Pin = -8dBm Supply Voltage = 3.3V, RFIN Step to 50% VOUT (Note 3) GAIN1, Pin = 10dBm to 16dBm GAIN2, Pin = 4dBm GAIN4, Pin = -2dBm GAIN8, Pin = -8dBm VOUT Output Voltage Swing Comparator Characteristics Comparator Response Time Comparator Hysteresis IVREF Input Current RF Characteristics RFIN Frequency Range RFIN AC Input Resistance RFIN Input Shunt Capacitance RFIN Input Power Range Digital I/O LEN VIL/VIH G0 VIL/VIH G1 VIL/VIH Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: The LTC5564 is guaranteed functional within the operating temperature range from -40C to 85C. 0.8 0.8 0.8 VCCA - 0.8 VCCA - 0.8 VCCA - 0.8 V V V (Note 6) Frequency = 1000MHz, Power Level = 0dBm Frequency = 1000MHz, Power Level = 0dBm (Note 6) 0.6 to 15 135 0.77 -24 to 16 GHz pF dBm 10dBm to 16dBm RFIN Step to VCOMP 50% (Note 3) 9 10 -2.3 ns mV A Supply Voltage = 3V 1.4 1.7 7.0 9.0 11.0 14.0 7.1 9.0 11.0 14.0
The l denotes the specifications which apply over the full operating , temperature range, otherwise specifications are at TA = 25C. Supply voltage = VCCRF = VCCA = VCCP = 5V, GAIN1, CLOAD = 10pF no RF input signal, unless otherwise noted.
MIN TYP 350/70 185/70 120/70 50/50 325/70 185/70 120/70 50/50 75 52 35 15 0/225 10 MAX UNITS V/s V/s V/s V/s V/s V/s V/s V/s MHz MHz MHz MHz mV pF mA ns ns ns ns ns ns ns ns V
VOUTADJ Input Range VOUT Load Capacitance VOUT Output Current VOUT Response Time
Note 3: RFIN step from no power to stated level. Note 4: See typical curve for bandwidth vs output voltage. Note 5: See Applications Information section. Note 6: Specification is guaranteed by design and not 100% tested in production.
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LTC5564 TYPICAL PERFORMANCE CHARACTERISTICS
Demodulation Bandwidth
30 VOUT = 500mV VOUT -3dB CROSSOVER (MHz) 20 10 GAIN (dB) 0 -10 -20 -30 -40 -50 0.01 GAIN8 GAIN4 GAIN2 GAIN1 0.1 1 10 FREQUENCY (MHz) 100 1000
5564 G01
Demodulation Bandwidth vs VOUT
80 70 60 50 40 30 20 10 0 200 85C 250 300 350 VOUT (mV)
5564 G02
VOUT Pulse Response, PIN = 8dBm
GAIN1 GAIN2
GAIN4
VOUT 500mV/DIV ASK MODULATED RF INPUT SIGNAL START
GAIN8 VCC = 5V ASK MODULATION FREQUENCY 2.7GHz GAIN1 10ns/DIV
5564 G03
25C 400
-40C 450 500
VOUT Pulse Response = -10dBm
400
VOUT Offset vs Supply Voltage
350 GAIN8 GAIN4 GAIN2 GAIN1 350 VOUT (mV) VOUT (mV) 330 310
VOUT Offset vs Temperature GAIN1
VCC = 5V 3 STDEV
VOUT 50mV/DIV ASK MODULATED RF INPUT SIGNAL START VCC = 5V ASK MODULATION FREQUENCY 2.7GHz GAIN1 10ns/DIV
5564 G04
AVERAGE 290 270 250 -3 STDEV
300
250 3 3.5 4 4.5 VCC (V) 5 5.5
5564 G05
230 -40
-20
20 40 0 TEMPERATURE (C)
60
80
5565 G06
VOUT Offset vs Temperature GAIN2
350 VCC = 5V 3 STDEV 330 410 390 370 350 VOUT (mV) VOUT (mV) AVERAGE 290 330 310 290 270 270 -3 STDEV 250 60 80
5565 G07
VOUT Offset vs Temperature GAIN4
VCC = 5V 3 STDEV 590 540 490 440 VOUT (mV) AVERAGE 390 340 290 -3 STDEV 240 190 -20 20 40 0 TEMPERATURE (C) 60 80
5565 G08
VOUT Offset vs Temperature GAIN8
VCC = 5V 3 STDEV
310
AVERAGE
-3 STDEV
250 -40
-20
20 40 0 TEMPERATURE (C)
230 -40
140 -40
-20
20 40 0 TEMPERATURE (C)
60
80
5565 G09
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LTC5564 TYPICAL PERFORMANCE CHARACTERISTICS
Supply Current vs Supply Voltage
48 46 44 ICC (mA) 42 40 38 36 34 3 3.5 4 4.5 VCC (V) 5 5.5
5564 G10
VOUT vs Input Power 2.7GHz
3400 3200 VCC = 5V 3000 TA = 25C 2800 2600 GAIN8 2400 2200 GAIN4 2000 1800 1600 1400 GAIN1 1200 1000 800 600 GAIN2 400 200 0 -24 -20 -16 -12 -8 -4 0 4 8 12 16 RFIN POWER (dBm)
5564 G11
VOUT vs Input Power 2.7GHz
3600 VCC = 5V 3200 GAIN1 2800 2400 25C 2000 1600 1200 800 400 0 -10 -8 -6 -4 -2 0 2 4 6 8 10 12 14 16 RFIN POWER (dBm)
5564 G12
GAIN1, GAIN2 GAIN4, GAIN8 VOUT OUTPUT VOLTAGE (mV)
VOUT OUTPUT VOLTAGE (mV)
-40C
85C
VOUT vs Input Power 5.8GHz
3200 2800 VOUT OUTPUT VOLTAGE (mV) 2400 -40C 25C 2000 1600 1200 800 400 0 -10 -8 -6 -4 -2 0 2 4 6 8 10 12 14 16 RFIN POWER (dBm)
5564 G13
VOUT vs Input Power 12GHz
1800 RISING THRESHOLD VOLTAGE (mV) 1600 VOUT OUTPUT VOLTAGE (mV) 1400 1200 1000 800 600 85C 400 200 0 -10 -8 -6 -4 -2 0 2 4 6 8 10 12 14 16 RFIN POWER (dBm)
5564 G14
Comparator Threshold Voltage vs RF Input Power
3600 3200 2800 2400 2000 1600 1200 800 400 0 -10 -6 -2 2 6 10 RFIN POWER (dBm) 14 18
5564 G15
VCC = 5V GAIN1
VCC = 5V GAIN1 -40C
VCC = 5V TA = 25C FREQUENCY = 2.7GHz
25C
85C
VREF RISING
Comparator Rising Edge Threshold vs Frequency
2000 1800 RISING EDGE VREF (mV) 1600 1400 VCC = 5V TA = 25C RFIN = 10dBm PERCENT OF UNITS (%) 35 30
GAIN1 VOUT/RFIN Histogram
25
GAIN2 VOUT/RFIN Histogram
20 25 20 15 10 5 0 0 2.710 PERCENT OF UNITS (%)
15
1200 1000 800 600 400 0 8000 12000 4000 FREQUENCY (MHz) 16000
5564 G16
10
5
1.32 1.33 1.34 1.35 1.36 1.37 1.38 1.39 1.40 1.41 GAIN (V/V)
5564 G17
2.750
2.790 2.830 GAIN (V/V)
2.870
2.910
5564 G18
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LTC5564 TYPICAL PERFORMANCE CHARACTERISTICS
GAIN4 VOUT/RFIN Histogram
20
12 10
GAIN8 VOUT/RFIN Histogram
45 40
GAIN2/GAIN1 Histogram
PERCENT OF UNITS (%)
PERCENT OF UNITS (%)
PERCENT OF UNITS (%)
15
35 30 25 20 15 10
8 6 4 2
10
5
5 0 1.925 1.945 1.965 1.985 GAIN2/GAIN1 2.005 2.025
5564 G21
0 5.52 5.6 5.68 5.76 GAIN (V/V) 5.84 5.92
5564 G19
0 11.425 11.625 11.825 12.025 12.225 12.425 GAIN (V/V)
5564 G20
GAIN4/GAIN2 Histogram
40 35 PERCENT OF UNITS (%) PERCENT OF UNITS (%) 2.005 2.030 2.055 GAIN4/GAIN2 2.080 2.105
5564 G22
GAIN8/GAIN4 Histogram
15
30 25 20 15 10 5 0 1.980
10
5
0 2.045
2.065
2.085 2.105 GAIN8/GAIN4
2.125
2.145
5564 G23
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LTC5564 PIN FUNCTIONS
RFIN (Pin 1): RF Input Voltage. A coupling capacitor must be used to connect to the RF signal source. This pin has an internal 250 termination, an internal Schottky diode detector and an internal 8pF reservoir capacitor. NC (Pins 2, 9, 16): No Connect. These pins should be left unconnected by the user for best RF performance. GND (Pins 3, 4, Exposed Pad Pin 17): These pins should be tied to system ground. See Applications Information for best practices. LEN (Pin 5): Comparator Latch Enable Input. VCOMP will be latched when LEN is high and transparent when LEN is low. VOUTADJ (Pin 6): Amplifier Output Offset Adjust. When left floating, the VOUT pin of the amplifier will be at its nominal quiescent output offset value. See the Applications Information section for adjustment range. G0, G1 (Pins 7, 8): Amplifier Gain Selection. Logic low or high levels on the G0 and G1 pins will change the internal amplifier gain, bandwidth and slew rate characteristics. See the Applications Information section for gain setting codes. VOUT (Pin 10): Detector Amplifier Output. VCCP (Pin 11): High Current Power Supply Pin. VCCA (Pin 12): Analog Power Supply Pin. VCOMP (Pin 13): Comparator Output. VREF (Pin 14): Comparator Negative Input. Apply an external reference voltage to this pin. VCCRF (Pin 15): RF Power Supply Pin.
SIMPLIFIED BLOCK DIAGRAM
VCCRF VCCA VCCP
RFIN
250 8pF
80A
1.2k
LEN VP VBIAS
VOUTADJ 1.7k
1.6k
200
Figure 1. Simplified Block Diagram
+ -
+ - + -
VCOMP VREF VOUT
200 PINS 3, 4, EXPOSED PAD PIN 17
PROGRAMMABLE FEEDBACK ARRAY
5564 F01
G1
G0
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LTC5564 APPLICATIONS INFORMATION
Operation The LTC5564 is a fast RF detector with a high speed amplifier and comparator. This product integrates these functions to provide RF detection over frequencies ranging from 600MHz to 15GHz. These functions include an RF Schottky peak detector, internally compensated operational amplifier, and a comparator as shown in Figure 1. The LTC5564 has selectable amplifier gains, amplifier output offset adjustment and comparator latch enable capabilities. Amplifier The high speed amplifier offers four gain settings and is capable of driving a 1.7mA load with an output swing range of approximately 295mV to VCC - 1.6V. See Table 1 for gain setting operation. The VOUTADJ pin provides output DC offset adjustment to satisfy various interface requirements. Setting VOUT to 500mV also provides the maximum demodulation bandwidth in each gain mode. See Electrical and Typical Performance Characteristics curve. See Table 1 for the
Table 1. Gain Mode and Typical VOUTADJ Operation
PIN G1 GND GND VCCA VCCA G0 GND VCCA GND VCCA GAIN MODE GAIN1 GAIN2 GAIN4 GAIN8 DESCRIPTION Minimum Gain Setting (VOUT/RFIN 1.5dB) VOUT/RFIN Increased 6dB VOUT/RFIN Increased 12dB VOUT/RFIN Increased 18dB REQUIRED VOUTADJ FOR A GIVEN DC OUTPUT OFFSET VOUTADJ = 0.95 * VOUT - 0.174 VOUTADJ = (VOUT - 0.07)/2.10 VOUTADJ = (VOUT + 0.05)/3.16 VOUTADJ = (VOUT + 0.25)/5.26
typical VOUTADJ voltage for the desired VOUT DC output offset in each gain setting. RF Detector The internal temperature compensated Schottky diode peak detector converts the RF input signal to a low frequency signal. The detector demonstrates excellent efficiency and linearity over a wide range of input power levels. The Schottky diode is nominally biased at 180A and drives a parallel reservoir capacitor-resistor network of 8pF and 1.2k. Comparator The high speed comparator compares the external reference voltage on the VREF pin to the internal signal voltage VP from the peak detector and produces the output logic signal VCOMP . VP is the internal comparator positive input as shown in Figure 1. LEN provides latch enable/disable functionality as shown in Figure 2.
Note: Valid range for VOUT 0.195V VOUT VCC - 1.6
LEN
VREF VP VCOMP
5564 F02
VOUT TRANSPARENT
VOUT LATCHED
VOUT TRANSPARENT
Figure 2. LTC5564 Comparator Latch Enable Function
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LTC5564 APPLICATIONS INFORMATION
Propagation Delay, Slew Rate and Response Time The LTC5564 has been designed for high slew rate operation. For RF input power levels of 10dBm to 16dBm and a GAIN1 setting, the internal amplifier will slew at 350V/s. In a given gain setting slew rate will be maximized for larger input power levels. Slew rate will degrade with smaller RFIN amplitude signals or when the amplifier gain is increased. See Electrical Characteristics. The LTC5564 has been designed to function as a positive peak detector. Consequently, the device responds to a rising signal at the RF detector input much more rapidly than a falling signal. Correspondingly, the rising edge of VOUT transitions much more rapidly than the falling edge transitions as shown in Figure 3. When operating in unity gain with a 10dBm to 16dBm RF input signal, the propagation delay to fifty percent VOUT is approximately 7.0ns. The operational amplifier has been internally compensated to provide 75MHz bandwidth with VOUT = 500mV and a GAIN1 mode setting. With no RF input the output offset will be approximately 290mV. Lowering the output offset will degrade bandwidth performance. See the Typical Performance Characteristics. Loading, Bypass Capacitors and Board Layout The LTC5564 has been designed to directly drive a capacitive load of 10pF at VOUT. When driving a capacitive load greater than 10pF a series resistance should be added between VOUT and the load to maintain good stability. This resistance should be placed as close to VOUT as possible. See Table 2 for typical series resistor values for various capacitive loads.
Table 2. Typical Series Resistor Values for VOUT Capacitive Loading
CLOAD Up to 10pF 11pF to 20pF 21pF to 100pF Greater Than 100pF R SERIES 0 40 68 100
Good layout practice and proper use of bypass capacitors will improve circuit performance and reduce the possibility of measurement error. Bypass capacitors should be used for pins VCCRF, VCCA, VCCP, VOUTADJ and VREF. Bypass capacitors should be connected as close to the LTC5564 as possible. All ground return path lengths and ohmic losses should be minimized. See Figure 5 in the Applications Information section for the demo board schematic showing these bypass capacitances. The LTC5564 return path for all supply currents is through the Pin 17 exposed pad. A high resistance path from the Pin 17 exposed pad to power supply ground will cause a VOUT output offset error. Board layout and connections that minimize ohmic losses from the Pin 17 exposed pad to power supply ground will reduce this error. Measurements being made relative to LTC5564 ground should be made as close to the Pin 17 exposed pad to reduce errors.
VOUT 500mV/DIV ASK MODULATED RF INPUT SIGNAL START VCC = 5V ASK MODULATION FREQUENCY 2.7GHz GAIN1 10ns/DIV
5564 F03
Figure 3. VOUT Pulse Response, PIN = 8dBm
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LTC5564 APPLICATIONS INFORMATION
Applications The LTC5564 can be used as a self-standing signal strength measurement receiver for a wide range of input signals from -24dBm to 16dBm and frequencies from 600MHz to 15GHz. In addition to power detection, the LTC5564 may be used as a demodulator for AM and ASK modulated signals. Depending on the application the RSSI may be split into two branches to provide AC-coupled data (e.g., audio) and a DC-coupled RSSI output for signal strength measurement and AGC.
47pF FROM RF MATCHING NETWORK/ANTENNA VCC 1000pF 10pF 1 11 15 12 3, 4, 17 RFIN VCCP VCCRF VCCA GND VCOMP LEN VREF 13 DETECT OVERVOLTAGE EVENT 5 G1 G0 7 C
5564 F04
VOUT LTC5564
10
DETECT VOLTAGE
8
+
14
Figure 4. 600MHz to 15GHz Power Detector
VCC VREF 1000pF 17 2.2pF 1 0.5pF 2 3 4 10pF 16 15 14 100pF 13 VCOMP
15GHz RFIN
NC VCCRF VREF VCOMP RFIN NC GND GND LEN VOUTADJ G0 5 6 100pF 10k 10k 10k 7 LTC5564 VCCA VCCP VOUT NC G1 8
VCC 12 11 10 68 10pF 1000pF
VOUT
9 100pF
LEN VOUTADJ
G1 G0
5564 F05
Figure 5. Demo Board Schematic Optimized for 15GHz
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LTC5564 PACKAGE DESCRIPTION
UD Package 16-Lead Plastic QFN (3mm x 3mm)
(Reference LTC DWG # 05-08-1691)
0.70 0.05
3.50
0.05 2.10
1.45 0.05 0.05 (4 SIDES)
PACKAGE OUTLINE 0.25 0.05 0.50 BSC RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS 0.75 0.05 BOTTOM VIEW--EXPOSED PAD R = 0.115 TYP 15 16 0.40 1 1.45 0.10 (4-SIDES) 2 0.10 PIN 1 NOTCH R = 0.20 TYP OR 0.25 45 CHAMFER
3.00 0.10 (4 SIDES) PIN 1 TOP MARK (NOTE 6)
(UD16) QFN 0904
0.200 REF 0.00 - 0.05 NOTE: 1. DRAWING CONFORMS TO JEDEC PACKAGE OUTLINE MO-220 VARIATION (WEED-2) 2. DRAWING NOT TO SCALE 3. ALL DIMENSIONS ARE IN MILLIMETERS 4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE 5. EXPOSED PAD SHALL BE SOLDER PLATED 6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON THE TOP AND BOTTOM OF PACKAGE
0.25
0.05
0.50 BSC
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Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
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LTC5564 TYPICAL APPLICATION
600MHz to 15GHz RF Power Detector
33pF RF INPUT VCC 1000pF 10pF RFIN VCCA VCCRF VCCP GND VCOMP LEN VREF G1 G0 LTC5564 VOUTADJ VOUT
+
C
5564 TA02
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12 Linear Technology Corporation
(408) 432-1900 FAX: (408) 434-0507
LT 1210 * PRINTED IN USA
1630 McCarthy Blvd., Milpitas, CA 95035-7417
www.linear.com
(c) LINEAR TECHNOLOGY CORPORATION 2010

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