ADL5513-EVALZ

1 MHz to 4 GHz, 80 dB Logarithmic Detector/Controller ADL5513 FEATURES Wide bandwidth: 1 MHz to 4 GHz 80 dB dynamic range (±3 dB) Constant dynamic range over frequency Stability over −40oC to +85oC temperature range: ±0.5 dB Operating temperature range: −40oC to +125oC Sensitivity: −70 dBm Low noise measurement/controller output (VOUT) Pulse response time: 21 ns/20 ns (fall/rise) Single-supply operation: 2.7 V to 5.5 V @ 31 mA Power-down feature: 1 mW @ 5 V Small footprint LFCSP Fabricated using high speed SiGe process FUNCTIONAL BLOCK DIAGRAM NC 16 NC 15 CLPF 14 NC 13 DET VPOS 1 INHI 2 DET DET DET DET I V 12 VOUT I INLO 3 V 11 VSET ADL5513 VPOS 4 SLOPE CONTROL 5 6 10 COMM BAND GAP REFERENCE 7 GAIN BIAS 8 9 TADJ 07514-001 NC NC NC NC Figure 1. APPLICATIONS RF transmitter power amplifier linearization and gain/power control Power monitoring in radio link transmitters RSSI measurement in base stations, WLAN, WiMAX, RADAR GENERAL DESCRIPTION The ADL5513 is a demodulating logarithmic amplifier, capable of accurately converting an RF input signal to a corresponding decibel-scaled output. It employs the progressive compression technique over a cascaded amplifier chain, each stage of which is equipped with a detector cell. The device can be used in either measurement or controller modes. The ADL5513 maintains accurate log conformance for signals up to 4 GHz. The input dynamic range is typically 80 dB (referred to 50 Ω) with error less than ±3 dB and 74 dB with error less than ±1 dB. The ADL5513 has 20 ns response time that enables RF burst detection to a pulse rate of beyond 50 MHz. The device provides unprecedented logarithmic intercept stability vs. ambient temperature conditions. A supply of 2.7 V to 5.5 V is required to power the device. Current consumption is 31 mA, and it decreases to 200 μA when the device is disabled. The ADL5513 can be configured to provide a control voltage to a power amplifier or a measurement output from the VOUT pin. Because the output can be used for controller applications, special attention has been paid to minimize wideband noise. In this mode, the setpoint control voltage is applied to the VSET pin. The feedback loop through an RF amplifier is closed via VOUT, the output of which regulates the amplifier output to a magnitude corresponding to VSET. The ADL5513 provides 0 V to (VPOS − 0.1 V) output capability at the VOUT pin, suitable for controller applications. As a measurement device, VOUT is externally connected to VSET to produce an output voltage, VOUT, that increases linear-in-dB with RF input signal amplitude. The logarithmic slope is 21 mV/dB, determined by the VSET interface. The intercept is −88 dBm (referred to 50 Ω, continuous wave input, 900 MHz) using the INHI input. These parameters are very stable against supply and temperature variations. The ADL5513 is fabricated on a SiGe bipolar IC process and is available in a 3 mm × 3 mm, 16-lead LFCSP package for the −40°C to +125°C operating temperature range. A fully populated evaluation board is available. Rev. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. www.analog.com Tel: 781.329.4700 Fax: 781.461.3113 ©2008 Analog Devices, Inc. All rights reserved. ADL5513 TABLE OF CONTENTS Features .............................................................................................. 1  Applications ....................................................................................... 1  Functional Block Diagram .............................................................. 1  General Description ......................................................................... 1  Revision History ............................................................................... 2  Specifications..................................................................................... 3  Absolute Maximum Ratings............................................................ 7  ESD Caution .................................................................................. 7  Pin Configuration and Function Descriptions ............................. 8  Typical Performance Characteristics ............................................. 9  Theory of Operation ...................................................................... 13  Applications Information .............................................................. 14  Basic Connections ...................................................................... 14  Input Signal Coupling ................................................................ 14  Output Filtering .......................................................................... 14  Output Interface ......................................................................... 15  Setpoint Interface ....................................................................... 15  Description of Characterization ............................................... 15  Error Calculations ...................................................................... 16  Adjusting Accuracy Through Choice of Calibration Points............................................................................................ 16  Temperature Compensation of Output Voltage ..................... 17  Device Calibration ..................................................................... 18  Power-Down Functionality ....................................................... 18  Measurement Mode ................................................................... 19  Setting the Output Slope in Measurement Mode .................. 19  Controller Mode ......................................................................... 20  Constant Power Operation ....................................................... 20  Increasing the Dynamic Range of the ADL5513 ................... 22  Evaluation Board ............................................................................ 23  Outline Dimensions ....................................................................... 25  Ordering Guide .......................................................................... 25  REVISION HISTORY 10/08—Revision 0: Initial Version Rev. 0 | Page 2 of 28 ADL5513 SPECIFICATIONS VS = 5 V, TA = 25°C, Z0 = 50 Ω, Pin INHI and Pin INLO are ac-coupled, continuous wave (CW) input, single-ended input drive, VOUT tied to VSET, error referred to best-fit line (linear regression −20 to −40 dBm), unless otherwise noted. (Temperature adjust voltage optimized for 85°C.) Table 1. Parameter OVERALL FUNCTION Maximum Input Frequency FREQUENCY = 100 MHz Output Voltage: High Power Input Output Voltage: Low Power Input ±3.0 dB Dynamic Range ±1.0 dB Dynamic Range ±0.5 dB Dynamic Range Maximum Input Level, ±1.0 dB Minimum Input Level, ±1.0 dB Deviation at TA = 25°C Conditions Min 1 PIN = −10 dBm PIN = −50 dBm 1.50 0.64 1.63 0.79 75 64 58 6 −58 0.27 0.003 −0.14 +0.15/−0.33 +0.23/−0.43 0.8 +0.12/−0.31 ±0.31 +0.74 +0.35/−0.18 +0.25/−0.47 +0.52/−0.24 21 −87 1.3/0.4 1.64 0.79 76 70 68 8 −62 0.2 0.002 0.34 +0.25/−0.3 +0.2/−0.53 +0.72/−0.1 +0.2/−0.3 +0.28/−0.37 0.7 +0.4/−0.36 +0.37/−0.5 +0.67/−0.28 Typ Max 4000 1.76 0.94 Unit MHz V V dB dB dB dBm dBm dB dB dB dB dB dB dB dB dB dB dB dB mV/dB dBm kΩ/pF V V dB dB dB dBm dBm dB dB dB dB dB dB dB dB dB dB dB dB Deviation vs. Temperature PIN = −10 dBm PIN = −30 dBm PIN = −50 dBm Deviation from output at TA = 25°C 25°C < TA < 85°C; PIN = −10 dBm −40°C < TA < +25°C; PIN = −10 dBm 25°C < TA < 125°C; PIN = −10 dBm 25°C < TA < 85°C; PIN = −30 dBm −40°C < TA < +25°C; PIN = −30 dBm 25°C < TA < 125°C; PIN = −30 dBm +25°C < TA < +85°C; PIN = −50 dBm −40°C < TA < +25°C; PIN = −50 dBm 25°C < TA < 125°C; PIN = −50 dBm 19.5 Logarithmic Slope Logarithmic Intercept Input Impedance FREQUENCY = 900 MHz Output Voltage: High Power Input Output Voltage: Low Power Input ±3.0 dB Dynamic Range ±1.0 dB Dynamic Range ±0.5 dB Dynamic Range Maximum Input Level, ±1.0 dB Minimum Input Level, ±1.0 dB Deviation at TA = 25°C 22.5 PIN = −10 dBm PIN = −50 dBm Deviation vs. Temperature PIN = −10 dBm PIN = −30 dBm PIN = −50 dBm Deviation from output at TA = 25°C 25°C < TA < 85°C; PIN = −10 dBm −40°C < TA < +25°C; PIN = −10 dBm 25°C < TA < 125°C; PIN = −10 dBm 25°C < TA < 85°C; PIN = −30 dBm −40°C < TA < +25°C; PIN = −30 dBm 25°C < TA < 125°C; PIN = −30 dBm 25°C < TA < 85°C; PIN = −50 dBm −40°C < TA < +25°C; PIN = −50 dBm 25°C < TA < 125°C; PIN = −50 dBm Rev. 0 | Page 3 of 28 ADL5513 Parameter Logarithmic Slope Logarithmic Intercept Input Impedance FREQUENCY = 1900 MHz Output Voltage: High Power Input Output Voltage: Low Power Input ±3.0 dB Dynamic Range ±1.0 dB Dynamic Range ±0.5 dB Dynamic Range Maximum Input Level, ±1.0 dB Minimum Input Level, ±1.0 dB Deviation at TA = 25°C Conditions Min Typ 21 −88 1.3/0.4 1.66 0.80 75 70 68 8 −62 0.25 0.0012 0.52 +0.14/−0.41 +0.19/−0.51 0.9 +0.1/−0.38 +0.37/−0.26 0.83 +0.55/−0.3 +0.79/−0.16 +0.62/−0.41 21 −88 0.6/0.5 1.66 0.82 77 70 66 8 −62 0.33 0.02 0.23 ±0.28 +0.2/−0.52 +0.7/−0.1 +0.15/−0.35 +0.24/−0.41 0.77 +0.2/−0.6 +0.1/−0.94 +0.8/−0.2 21 −89 0.5/0.5 Max Unit mV/dB dBm kΩ/pF V V dB dB dB dBm dBm dB dB dB dB dB dB dB dB dB dB dB dB mV/dB dBm kΩ/pF V V dB dB dB dBm dBm dB dB dB dB dB dB dB dB dB dB dB dB mV/dB dBm kΩ/pF PIN = −10 dBm PIN = −50 dBm Deviation vs. Temperature PIN = −10 dBm PIN = −30 dBm PIN = −50 dBm Deviation from output at TA = 25°C 25°C < TA < 85°C; PIN = −10 dBm −40°C < TA < +25°C; PIN = −10 dBm 25°C < TA < 125°C; PIN = −10 dBm 25°C < TA < 85°C; PIN = −30 dBm −40°C < TA < +25°C; PIN = −30 dBm 25°C < TA < 125°C; PIN = −30 dBm 25°C < TA < 85°C; PIN = −50 dBm −40°C < TA < +25°C; PIN = −50 dBm 25°C < TA < 125°C; PIN = −50 dBm Logarithmic Slope Logarithmic Intercept Input Impedance FREQUENCY = 2140 MHz Output Voltage: High Power Input Output Voltage: Low Power Input ±3.0 dB Dynamic Range ±1.0 dB Dynamic Range ±0.5 dB Dynamic Range Maximum Input Level, ±1.0 dB Minimum Input Level, ±1.0 dB Deviation at TA = 25°C PIN = −10 dBm PIN = −50 dBm Deviation vs. Temperature PIN = −10 dBm PIN = −30 dBm PIN = −50 dBm Deviation from output at TA = 25°C 25°C < TA < 85°C; PIN = −10 dBm −40°C < TA < +25°C; PIN = −10 dBm 25°C < TA < 125°C; PIN = −10 dBm 25°C < TA < 85°C; PIN = −30 dBm −40°C < TA < +25°C; PIN = −30 dBm 25°C < TA < 125°C; PIN = −30 dBm 25°C < TA < 85°C; PIN = −50 dBm −40°C < TA < +25°C; PIN = −50 dBm 25°C < TA < 125°C; PIN = −50 dBm Logarithmic Slope Logarithmic Intercept Input Impedance Rev. 0 | Page 4 of 28 ADL5513 Parameter FREQUENCY = 2600 MHz Output Voltage: High Power Input Output Voltage: Low Power Input ±3.0 dB Dynamic Range ±1.0 dB Dynamic Range ±0.5 dB Dynamic Range Maximum Input Level, ±1.0 dB Minimum Input Level, ±1.0 dB Deviation at TA = 25°C Conditions PIN = −10 dBm PIN = −50 dBm Min Typ 1.67 0.83 80 74 69 7 −67 0.33 0.02 0.01 +0.2/−0.4 +0.05/−0.68 +0.75/−0.05 +0.1/−0.37 +0.25/−0.4 0.8 +0.2/−0.6 ±0.5 1.13 21 −89 0.4/0.6 1.74 0.84 76 62 58 1 −61 0.43 −0.05 −0.14 +0.32/−0.28 +0.27/−0.54 +0.58/−0.21 +0.3/−0.22 +0.38/−0.33 +0.67/−0.05 +0.41/−0.37 +0.41/−0.62 +0.8/−0.18 22.5 −87 0.5/0.4 2 0.58 47.1 40 Max Unit V V dB dB dB dBm dBm dB dB dB dB dB dB dB dB dB dB dB dB mV/dB dBm kΩ/pF V V dB dB dB dBm dBm dB dB dB dB dB dB dB dB dB dB dB dB mV/dB dBm kΩ/pF V V dB/ V kΩ Deviation vs. Temperature PIN = −10 dBm PIN = −30 dBm PIN = −50 dBm Deviation from output at TA = 25°C 25°C < TA < 85°C; PIN = −10 dBm −40°C < TA < +25°C; PIN = −10 dBm 25°C < TA < 125°C; PIN = −10 dBm 25°C < TA < 85°C; PIN = −30 dBm −40°C < TA < +25°C; PIN = −30 dBm 25°C < TA < 125°C; PIN = −30 dBm 25°C < TA < 85°C; PIN = −50 dBm −40°C < TA < +25°C; PIN = −50 dBm 25°C < TA < 125°C; PIN = −50 dBm Logarithmic Slope Logarithmic Intercept Input Impedance FREQUENCY = 3.6 GHz Output Voltage: High Power Input Output Voltage: Low Power Input ±3.0 dB Dynamic Range ±1.0 dB Dynamic Range ±0.5 dB Dynamic Range Maximum Input Level, ±1.0 dB Minimum Input Level, ±1.0 dB Deviation at TA = 25°C PIN = −10 dBm PIN = −50 dBm Deviation vs. Temperature PIN = −10 dBm PIN = −30 dBm PIN = −50 dBm Deviation from output at TA = 25°C 25°C < TA < 85°C; PIN = −10 dBm −40°C < TA < +25°C; PIN = −10 dBm 25°C < TA < 125°C; PIN = −10 dBm 25°C < TA < 85°C; PIN = −30 dBm −40°C < TA < +25°C; PIN = −30 dBm 25°C < TA < 125°C; PIN = −30 dBm 25°C < TA < 85°C; PIN = −50 dBm −40°C < TA < +25°C; PIN = −50 dBm 25°C < TA < 125°C; PIN = −50 dBm Logarithmic Slope Logarithmic Intercept Input Impedance SETPOINT INPUT Nominal Range Logarithmic Scale Factor Input Impedance Pin VSET Log conformance error ≤ ±1 dB, RF input = 8 dBm Log conformance error ≤ ±1 dB, RF input = −62 dBm Rev. 0 | Page 5 of 28 ADL5513 Parameter OUTPUT INTERFACE Voltage Swing Capacitance Drive Capacitance Drive Current Source/Sink Output Noise Conditions Pin VOUT VSET = 0 V, RF input = open VSET = 0.47 V, RF input = open CLPF = open CLPF = 20 pF Output held at 1 V to 1% change RF input = 100 MHz, 0 dBm fNOISE = 100 kHz, CLPF = open fNOISE = 100 kHz, CLPF = 1 nF Input level = no signal to 0 dBm, 90% to 10% CLPF = open, 1 µs pulse width CLPF = open, 500 µs pulse width CLPF = open, 1 µs pulse width CLPF = open, 500 µs pulse width CLPF = 1000 pF, 10 µs pulse width CLPF = 1000 pF, 500 µs pulse width CLPF = 1000 pF, 10 µs pulse width CLPF = 1000 pF, 500 µs pulse width CLPF = open, 3 dB video bandwidth Pin TADJ 0 to 1.3 VPOS − 0.3 31 200 V V mA µA Min Typ 0.47 4.7 47 1 0.64/55 145 82 21 5.5 20 20 4.2 5.5 3.2 4.3 10 Max Unit V V pF nF mA nV/√Hz nV/√Hz ns µs ns ns µs µs µs µs MHz PULSE RESPONSE TIME Fall Time Rise Time Fall Time Rise Time Small Signal Video Bandwidth (or Envelope Bandwidth) TEMPERATURE ADJUST/POWER-DOWN INTERFACE Temperature Adjust Useful Range Minimum Logic Level to Disable Input Current Enable Time Disable Time Input Impedance 1 POWER SUPPLY INTERFACE Supply Voltage Quiescent Current Supply Current 1 Logic high disables Logic high TADJ = 0 V Logic low TADJ = 4.7 V PWDN low to VOUT at 100% final value, PWDN high to VOUT at 10% final value CLPF = open, RF input = 0 dBm, 100 MHz, 1 µs pulse width CLPF = 1000 pF, RF input = 0 dBm, 100 MHz, 1 µs pulse width CLPF = open, RF input = 0 dBm, 100 MHz, 1 µs pulse width CLPF = 1000 pF, RF input = 0 dBm, 100 MHz, 1 µs pulse width TADJ = 0.9 V, sourcing 70 µA Pin VPOS 2.7 25°C, RF input = −55 dBm When disabled 84 10.8 165 1.2 13 5.5 31