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AD641 - 250 MHz Demodulating Logarithmic Amplifier

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Datasheet Details

Part number AD641
Manufacturer Analog Devices
File Size 371.74 KB
Description 250 MHz Demodulating Logarithmic Amplifier
Datasheet download datasheet AD641 Datasheet

General Description

The AD641 is a 250 MHz, demodulating logarithmic amplifier with an accuracy of ± 2.0 dB and 44 dB dynamic range.

The AD641 uses a successive detection architecture to provide an output current that is logarithmically proportional to its input voltage.

The output current can be converted to a voltage using one of several on-chip resistors to select the slope.

Overview

a 250 MHz Demodulating Logarithmic Amplifier AD641.

Key Features

  • Logarithmic Amplifier Performance Usable to 250 MHz 44 dB Dynamic Range ؎2.0 dB Log Conformance 37.5 mV/dB Voltage Output Stable Slope and Intercepts 2.0 nV/√Hz Input Noise Voltage 50 ␮V Input Offset Voltage Low Power ؎5 V Supply Operation 9 mA (+VS), 35 mA (.
  • VS) Quiescent Current Onboard Resistors Onboard 10؋ Attenuator Dual Polarity Current Outputs Direct Coupled Differential Signal Path.

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