This document describes the features and characteristics of the Analog Devices low-cost, DC to 500 MHz, 92 dB logarithmic amplifier AD8307 Rev. D. The product features a complete multistage logarithmic amplifier, 92 dB dynamic range, single supply operation, 25 mV/dB slope, -84 dBm intercept, etc. It is suitable for conversion of signal level to decibel form, transmitter antenna power measurement, receiver signal strength indication, low-cost radar and sonar signal processing, network and spectrum analyzers, etc.
The AD8307 is a low‑cost, DC‑to‑500 MHz logarithmic amplifier offering a 92 dB dynamic range with a single‑supply operation as low as 2.7 V. It provides fully differential inputs, a 25 mV/dB output slope, and low power consumption (≈7.5 mA).\n\nThe document includes sections on features, detailed specifications, pin configuration, typical performance graphs, theory of operation, and application notes such as power‑meter implementations and low‑frequency operation. It also lists absolute maximum ratings, ESD cautions, and ordering information.
| Supply Voltage | 2.7 V to 5.5 V |
|---|---|
| Upper Usable Frequency | 500 MHz |
| Lower Usable Frequency | 10 Hz |
The device operates from 2.7 V to 5.5 V.