ADL5902-EVALZ AD [Analog Devices], ADL5902-EVALZ Datasheet
ADL5902-EVALZ
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ADL5902-EVALZ Summary of contents
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... The ADL5902 has 1.5 mW power consumption when powered down by a logic high applied to the PWDN pin. It powers up within approximately 5 μs to its nominal operating current 25°C. The ADL5902 is supplied × 4 mm, 16-lead LFCSP for operation over the wide temperature range of −40°C to +125°C. ...
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... ADL5902 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 ...................................................................... 15 Square Law Detector and Amplitude Target .............................. 15 RF Input Interface ...................................................................... 16 Small Signal Loop Response ..................................................... 16 Temperature Sensor Interface ...
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... SPECIFICATIONS 25° Ω, single-ended input drive current values imply that the ADL5902 is sourcing current out of the indicated pin. Table 1. Parameter Test Conditions OVERALL FUNCTION Frequency Range RF INPUT INTERFACE Pins INHI, INLO, ac-coupled Input Impedance Single-ended drive, 50 MHz ...
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... ADL5902 Parameter Test Conditions Deviation from CW Response 11.02 dB peak-to-rms ratio (CDMA2000) 5.13 dB peak-to-rms ratio (16 QAM) 2.76 dB peak-to-rms ratio (QPSK) 1.9 GHz ±1.0 dB Dynamic Range CW input, T Maximum Input Level, ±1.0 dB Calibration at −60 dBm, −45 dBm, and 0 dBm Minimum Input Level, ±1.0 dB Calibration at −60 dBm, −45 dBm, and 0 dBm Deviation vs. Temperature Deviation from output at 25° ...
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... LPF = 220 −55 dBm ≤ 125°C A ≤ +25°C A ≤ −15°C A ≤ 125°C A < +25° 25° LOAD Rev Page ADL5902 Min Typ Max 0.2/0 −0.2/+0.4 +0.2/−0.3 −0.2/+0.4 49.6 −63 −52 −0.8/0 −1.3/+0.1 −1.6/0 −1.3/+0.1 42.7 −54.1 0.03 4 ...
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... ADL5902 Parameter Test Conditions TEMPERATURE REFERENCE TEMP (Pin 8) Output Voltage T A Temperature Coefficient −40°C ≤ T Short-Circuit Current Source/ 25°C ≤ T Sink Capability −40°C ≤ T Voltage Regulation T A RMS TARGET INTERFACE VTGT (Pin 12) Input Voltage Range Input Bias Current V TGT ...
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... Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ESD CAUTION Rating 5 dBm 2.51 V p-p 550 mW 10.6°C/W 35.3°C/W 57.2°C/W 1.0°C/W 34°C/W 150°C −40°C to +125°C −65°C to +150°C 300°C Rev Page ADL5902 ...
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... RF Input Common. This pin is normally ac-coupled to ground through a coupling capacitor. See Figure 37 for an equivalent circuit Connect. PIN 1 TADJ/PWDN 1 INDICATOR 12 VTGT VREF ADL5902 VPOS 3 10 VPOS TOP VIEW (Not to Scale) COMM 4 9 COMM NOTES CONNECT. 2. THE EXPOSED PADDLE IS COMM AND SHOULD HAVE BOTH A GOOD THERMAL AND GOOD ELECTRICAL CONNECTION TO GROUND ...
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... P (dBm) IN Input Amplitude, CW, Frequency = 700 MHz V = 0.4V TADJ REPRESENTS 55 DEVICES FROM 2 LOTS 0 –60 –50 –40 –30 –20 –10 P (dBm) IN Input Amplitude, CW, Frequency = 900 MHz ADL5902 –1 –2 –3 –4 –5 – – ...
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... ADL5902 6 0.4V ADJ 5.5 CALIBRATION AT 0dBm, –45dBm, AND –60dBm 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 –60 –50 –40 –30 –20 P (dBm) IN Figure 9. Typical V and Log Conformance Error with Respect to 25°C Ideal OUT Line over Temperature vs. Input Amplitude at 1.9 GHz 0.4V ADJ 5.5 CALIBRATION AT 0dBm, –45dBm, AND –60dBm 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 –60 –50 –40 – ...
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... Input Amplitude, CW, Frequency = 5.8 GHz 350 REPRESENTS 1900 PARTS FROM 3 LOTS 300 250 200 150 100 50 0 0.20 0.25 0.30 0.35 0.40 V (V) OUT Figure 20. Distribution −60 dBm, 900 MHz OUT IN ADL5902 –1 –2 –3 –4 –5 – –1 – ...
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... ADL5902 6 PEP = 0dB OUT V QPSK PEP = 2.76 5.5 OUT V 16 QAM PEP = 5.13 OUT 5.0 V CDMA2000 PEP = 11.02 OUT ERROR CW 4.5 ERROR QPSK ERROR 16 QAM 4.0 ERROR CDMA2000 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 –60 –50 –40 –30 –20 P (dBm) IN Figure 21. Error from CW Linear Reference vs. Signal Modulation, Frequency = 900 MHz 0.1µF, Three-Point Calibration at 0 dBm, LPF − ...
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... Figure 31. Change in V 100 10 1 105 125 0.1 4.0 4.1 Rev Page ADL5902 – 105 125 TEMPERATURE (°C) and Linearity Error with Respect to Straight Line vs. TEMP Temperature for Typical Device –40 –30 –20 – ...
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... ADL5902 7 6 TADJ/PWDN PULSE – TIME (µs) Figure 33. Output Response Using Power-Down Mode for Various RF Input Levels Carrier Frequency 2.14 GHz, C 3.5 3.0 2.5 –10dBm 2.0 –30dBm 1.5 1.0 0 FREQUENCY (GHz) Figure 34. Typical V vs. Frequency for Two RF Input Amplitudes, OUT ...
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... THEORY OF OPERATION The ADL5902 MHz to 9 GHz true rms responding detector with measurement range at 2.14 GHz and a greater than 56 dB measurement range at frequencies GHz. It incorporates a modified AD8362 increases the frequency range and improves measurement accuracy at high frequencies. Transfer function peak-to-peak ripple has been reduced to < ...
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... V; therefore, this protection limits the maximum possible input to the ADL5902. SMALL SIGNAL LOOP RESPONSE The ADL5902 uses a VGA in a loop to force a squared RF signal at 2.14 GHz = 45 dB equal to a squared dc voltage. This nonlinear loop can be simplified and solved for a small signal loop response. The low- ...
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... Choosing a Value for C section for more information). TEMPERATURE SENSOR INTERFACE The ADL5902 provides a temperature sensor output with a scaling factor of the output voltage of approximately 4.9 mV/°C. The output is capable of sourcing 4 mA and sinking 50 μA maximum at 25°C. An external resistor can be connected from TEMP to COMM to provide additional current sink capability. The typical output voltage at 25° ...
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... V), the TADJ/PWDN pin S sinks approximately 500 µA. The source used to disable the ADL5902 must have a sufficiently high current capability for this reason. Figure 33 shows the typical response times for various RF input levels. The output reaches within 0 its steady- state value in approximately 5 µs; however, the reference voltage is available to full accuracy in a much shorter time ...
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... Figure 45. These capacitors should be placed as close as possible to the VPOS pins. An external 60.4 Ω resistor combines with the relatively high RF input impedance of the ADL5902 to provide a broadband 50 Ω match coupling capacitor should be placed between this resistor and INHI. The INLO input should be ac-coupled to ground using the same value capacitor ...
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... Carrier W-CDMA (TM1-64) at 2.14 GHz with P Figure 46 also shows how the response time is affected by the value of C LPF −10 dBm was applied to the ADL5902. The 10% to 90% rise time and 90% to 10% fall time were then measured notable should TGT that the fall time is much longer than the rise time. This can also be seen in the response time plots, Figure 22, Figure 23, Figure 25, and Figure 26 ...
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... This value was experiment- LPF ally determined to be the minimum capacitance that ensures good rms compliance when the ADL5902 is driven W-CDMA signal (TM1-64). This test was carried out by starting out with a large capacitance value on the CLPF pin (for example, 10 µ ...
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... MHz performance, are conservatively chosen so that there is no chance that the output voltages exceed the ADL5902 output swing or the input range 2.5 V and ADC. Because the output swing does not vary much with frequency (it does start to drop off above 3 GHz), these values work for multiple frequencies ...
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... SYSTEM CALIBRATION AND ERROR CALCULATION The measured transfer function of the ADL5902 at 2.14 GHz is shown in Figure 50, which contains plots of both output voltage vs. input amplitude (power) and calculated error vs. input level. As the input level varies from −62 dBm to +3 dBm, the output voltage varies from ~0. ~3.5 V. ...
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... ADL5902, and, thus, it does not account for the slight losses due to the connector on the circuit board that carries the ADL5902 nor for the loss of traces on the circuit board. For this reason, there is a small absolute amplitude error (generally < ...
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... V OUT must be open and R13 must have a 0 Ω resistor. In this mode, the ADL5902 can control the gain of an external component. A setpoint voltage is applied to the VSET pin, the value of which corresponds to the desired RF input signal level applied to the ADL5902. ...
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... ADL5902 ASSEMBLY DRAWINGS Figure 55. Evaluation Board Layout, Top Side Figure 56. Evaluation Board Layout, Bottom Side Rev Page ...
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... MAX 1.00 0.85 0.80 SEATING PLANE ORDERING GUIDE Temperature 1 Model Range ADL5902ACPZ-R7 −40°C to +125°C ADL5902ACPZ-R2 −40°C to +125°C ADL5902ACPZ-WP −40°C to +125°C ADL5902-EVALZ RoHS Compliant Part. 4.00 0.60 MAX BSC SQ 0.60 MAX 13 12 0.65 BSC TOP 3.75 EXPOSED VIEW PAD BSC SQ (BOTTOM VIEW) ...
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... ADL5902 NOTES ©2010 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D08218-0-4/10(0) Rev Page ...