AD8313 Datasheet PDF | Analog Devices

Analog Devices AD8313

The AD8313 is a complete multistage demodulating logarithmic amplifier that can accurately convert an RF signal at its input to an equivalent decibel-scaled value at its dc output. The AD8313 maintains a high degree of log conformance for signal frequencies from 0.1 GHz to 2.5 GHz. The AD8313 is fabricated on Analog Devices, Inc., advanced 25 GHz silicon bipolar IC process and is available in an 8-lead MSOP package.

Part No.	AD8313
Datasheet	AD8313 Download
Manufacturer	Analog Devices
Description	Logarithmic Detector/Controller
Buy	Stock & Price

FEATURES

► Wide bandwidth: 0.1 GHz to 2.5 GHz min ► High dynamic range: 70 dB to ±3.0 dB ► High accuracy: ±1.0 dB over 65 dB range (@ 1.9 GHz) ► Fast response: 40 ns full-scale typical ► Controller mode with error output ► Scaling stable over supply and temperature ► Wide supply range: 2.7 V to 5.5 V ► Low power: 40 mW at 3 V ► Power-down feature: 60 mW at 3 V ► Complete and easy to use

APPLICATIONS

► RF transmitter power amplifier setpoint control and level monitoring ► Logarithmic amplifier for RSSI measurement cellular base stations, radio link, radar

GENERAL DESCRIPTION

Application is straightforward, requiring only a single supply of 2.7 V to 5.5 V and the addition of a suitable input and supply decoupling. Operating on a 3 V supply, its 13.7 mA consumption (for TA = 25°C) is only 41 mW. A power-down feature is provided; the input is taken high to initiate a low current (20 µA) sleep mode, with a threshold at half the supply voltage. The operating temperature range is −40°C to +85°C.