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AD8307 - Logarithmic Amplifier

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General Description

The AD8307 is the first logarithmic amplifier made available in an 8-lead SOIC_N package.

It is a complete 500 MHz monolithic demodulating logarithmic amplifier based on the progressive compression (successive detection) technique, providing a dynamic range of 92 dB to ±3 dB law conformance and 88 dB to a tight ±1 dB error bound at all frequencies up to 100 MHz.

The AD8307 is extremely stable and easy to use, requiring no significant external components.

Overview

Data Sheet.

Key Features

  • Complete multistage logarithmic amplifier 92 dB dynamic range:.
  • 75 dBm to +17 dBm to.
  • 90 dBm using matching network Single supply of 2.7 V minimum at 7.5 mA typical DC to 500 MHz operation, ±1 dB linearity Slope of 25 mV/dB, intercept of.
  • 84 dBm Highly stable scaling over temperature Fully differential dc-coupled signal path 100 ns power-up time, 150 μA sleep current.

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