The document describes the features and characteristics of Analog Devices' AD8307 Low Cost DC-500 MHz, 92 dB Logarithmic Amplifier. It features a complete multistage logarithmic amplifier, 92 dB dynamic range, single supply of 2.7 V minimum, 7.5 mA typical, DC to 500 MHz operation, etc.
The AD8307 is a complete 500 MHz monolithic demodulating logarithmic amplifier. It provides a 92 dB dynamic range from –75 dBm to +17 dBm, operates from a single 2.7 V to 5.5 V supply, and consumes only 22.5 mW at 3 V. The device features a fully differential input, 100 ns power‑up time and a standby current below 150 pA.
Typical applications include signal‑level conversion to decibel form, transmitter antenna power measurement, RSSI for receivers, low‑cost radar and sonar processing, and network/spectrum analysis. The AD8307 is supplied in 8‑lead PDIP (N‑8) and SOIC (R‑8) packages and is rated for –40 °C to +85 °C operation.
| Dynamic Range | -75 dBm to +17 dBm (92 dB) |
|---|---|
| Supply Voltage | 2.7 V to 5.5 V |
| Power‑Up Time | 100 ns |
| Sleep (Standby) Current | < 150 pA |
| Input Frequency Range | DC to 500 MHz |
| Operating Temperature Range | -40 °C to +85 °C |
The device operates from a single supply of 2.7 V to 5.5 V.
It offers a 92 dB dynamic range, from –75 dBm up to +17 dBm.
The amplifier works from DC up to 500 MHz.
It is rated for industrial temperatures from –40 °C to +85 °C.