AD8361ART Analog Devices, AD8361ART Datasheet
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AD8361ART
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AD8361ART Summary of contents
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... Rev. C 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 ...
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AD8361 TABLE OF CONTENTS Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 4 ESD Caution.................................................................................. 4 Pin Configuration and Function Descriptions............................. 5 Typical Performance Characteristics ............................................. 6 Circuit Description......................................................................... 11 REVISION HISTORY 8/04—Data Sheet Changed from Rev Rev. C. Changed Trimpots ...
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SPECIFICATIONS T = 25° 900 MHz, ground reference output mode, unless otherwise noted Table 1. Parameter SIGNAL INPUT INTERFACE 1 Frequency Range Linear Response Upper Limit 2 Input Impedance RMS CONVERSION ...
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AD8361 ABSOLUTE MAXIMUM RATINGS Table 2. Parameter Rating Supply Voltage V 5 SREF, PWDN IREF V − 0 RFIN 1 V rms Equivalent Power Ω 13 dBm 1 Internal Power ...
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PIN CONFIGURATION AND FUNCTION DESCRIPTIONS VPOS 1 8 AD8361 IREF 2 7 TOP VIEW RFIN 3 6 (Not to Scale) PWDN 4 5 Figure 4. 8-Lead MSOP Table 3. Pin Function Descriptions Pin No. Pin No. MSOP SOT-23 Mnemonic Description ...
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AD8361 TYPICAL PERFORMANCE CHARACTERISTICS 2.8 900MHz 2.6 2.4 2.2 100MHz 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 0 0.1 0.2 0.3 INPUT (V rms) Figure 6. Output vs. Input Level, Frequencies 100 MHz, 900 MHz, 1900 ...
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MEAN ±3 SIGMA –1.5 –2.0 2.5 –3.0 0.01 0.02 0.1 (–21dBm) (–7dBm) INPUT (V rms) Figure 12. Error from CW Linear Reference vs. Input, 3 Sigma to Either Side of Mean, ...
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AD8361 0.03 0.02 0.01 0.00 –0.01 –0.02 MEAN ±3 SIGMA –0.03 –0.04 –0.05 –40 – TEMPERATURE (°C) Figure 18. Output Reference Change vs. Temperature, Supply 3 V, Ground Reference Mode 0.02 0.01 0.00 –0.01 MEAN ±3 SIGMA ...
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GATE PULSE FOR 900MHz RF TONE 370mV 270mV RF INPUT 67mV 25mV 5µs PER HORIZONTAL DIVISION Figure 24. Output Response to Modulated Pulse Input for Various RF Input Levels, Supply 3 V, Modulation Frequency 900 MHz, No Filter Capacitor GATE ...
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AD8361 7.8 7 7.4 S 7.2 7.0 6.8 6.6 6.4 6.2 6.0 5.8 5.6 100 CARRIER FREQUENCY (MHz) Figure 30. Conversion Gain Change vs. Frequency, Supply 3 V, Ground Reference Mode, Frequency 100 MHz to 2500 MHz, ...
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CIRCUIT DESCRIPTION The AD8361 is an rms-responding (mean power) detector that provides an approach to the exact measurement of RF power that is basically independent of waveform. It achieves this function through the use of a proprietary technique in which ...
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AD8361 APPLICATIONS Basic Connections Figure 36 through Figure 38 show the basic connections for the AD8361’s MSOP version in its three operating modes. In all modes, the device is powered by a single supply of between 2.7 V and 5.5 ...
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INPUT (V rms) Figure 40. Output Swing for Supply Voltages of 2.7 V, 3.0 V, 5.0 V and 5.5 V (MSOP Only) ...
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AD8361 C C RFIN R SH Figure 43. Input Coupling/Matching Options, Broadband Resistor Match RFIN Figure 44. Input Coupling/Matching Options, Series Inductor Match RFIN L M Figure 45. Input Coupling/Matching Options, Narrowband ...
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The filter capacitance of the AD8361 can be augmented by connecting a capacitor between Pin 6 (FLTR) and VPOS. Table 7 shows the effect of several capacitor values for various communications standards with high peak-to-average ratios along with the residual ...
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AD8361 Output Drive Capability and Buffering The AD8361 is capable of sourcing an output current of approximately 3 mA. If additional current is required, a simple buffering circuit can be used as shown in Figure 51. Similar circuits can be ...
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The equation can be rewritten to yield a temperature compensated value for − − × DRIFT TEMP = OS VOS OUT V IN GAIN Figure 52 shows the output voltage and error (in ...
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AD8361 2.5 2.0 +80°C 1.5 +25°C 1.0 –30°C 0.5 0 –0.5 –1.0 –1.5 –2.0 –2.5 –25 –20 –15 –10 –5 PIN (dBm) Figure 55. Transfer Function and Error Plots Measured at 2.5 GHz for a 64 QAM Modulated Signal 2.5 ...
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GHz. However necessary to calibrate for a given application to accommodate for the change in conversion gain at higher frequencies. Dynamic Range Extension for the AD8361 The accurate measurement range of the AD8361 is limited by internal ...
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AD8361 U6 provides feedback to linearize the inherent tanh transfer function of the OTAs. When one OTA or the other is fully selected, the feedback is very effective. The active OTA has zero differential input; the inactive one has a ...
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EVALUATION BOARD Figure 65 and Figure 68 show the schematic of the AD8361 evaluation board. Note that uninstalled components are drawn in as dashed. The layout and silkscreen of the component side are shown in Figure 66, Figure 67, Figure ...
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AD8361 VPOS TP2 0.01µF 100pF 0Ω SW3 V S AD8361 SW2 VPOS SREF IREF VRMS 2 7 100pF C5 RFIN 3 RFIN FLTR 6 R2 1nF 75Ω COMM 4 PWDN 5 VPOS ...
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Problems caused by impedance mismatch may arise using the evaluation board to examine the AD8361 performance. One way to reduce these problems is to put a coaxial 3 dB attenuator on the RFIN SMA connector. Mismatches at the source, cable, ...
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... AD8361ART-REEL −40°C to +85°C AD8361ART-REEL7 −40°C to +85°C AD8361ARTZ-RL7 1 −40°C to +85°C AD8361-EVAL AD8361ART-EVAL Pb-free part. © 2004 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. 1.60 BSC INDICATOR 1.30 1.15 ...