(China (Mainland))
Product Summary
The AD640JN is a complete monolithic logarithmic amplifier. A single device provides up to 50 dB of dynamic range for frequencies from dc to 120 MHz. Two AD640JNs in cascade can provide up to 95 dB of dynamic range at reduced bandwidth. The AD640JN uses a successive detection scheme to provide an output current proportional to the logarithm of the input voltage. It is laser calibrated to close tolerances and maintains high accuracy over the full military temperature range using supply voltages from ±4.5 V to ±7.5 V. The applications of the AD640JN include Radar, Sonar, Ultrasonic and Audio Systems, Precision Instrumentation from DC to 120 MHz, Power Measurement with Absolute Calibration, Wide Range High, Accuracy Signal Compression, Alternative to Discrete and Hybrid IF Strips, Replaces Several Discrete Log Amp ICs.
Parametrics
AD640JN absolute maximum ratings: (1)Supply Voltage: ±7.5 V; (2)Input Voltage (Pin 1 or Pin 20 to COM): -3 V to +300 mV; (3)Attenuator Input Voltage (Pin 5 to Pin 3/4): ±4 V; (4)Storage Temperature Range D, E: -65℃to +150℃; (5)Storage Temperature Range N, P: -65℃ to +125℃; (6)Ambient Temperature Range, Rated Performance Commercial: 0℃ to +70℃; (7)Lead Temperature Range (Soldering 60 sec): +300℃.
Features
AD640JN features: (1)Complete, Fully Calibrated Monolithic System; (2)Five Stages, Each Having 10 dB Gain, 350 MHz BW; (3)Direct Coupled Fully Differential Signal Path; (4)Logarithmic Slope, Intercept and AC Response are Stable Over Full Military Temperature Range; (5)Dual Polarity Current Outputs Scaled 1 mA/Decade; (6)Voltage Slope Options (1 V/Decade, 100 mV/dB, etc.); (7)Low Power Operation (Typically 220 mW at 65 V); (8)Low Cost Plastic Packages Also Available.
Diagrams
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 AD640JN |
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IC AMP LOG 2.3MA 20DIP |
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AD640JNZ |
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IC AMP LOG 2.3MA 20DIP |
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