The AD8368 is a new analog-control variable-gain amplifier (VGA) that offers exceptional linearity over a broad frequency range for wireless infrastructure applications. The amplifier is optimized to maintain the dynamic range of base station radio transceivers, ensuring that both weak and strong incoming call signals are effectively handled and maintained. In addition, the AD8368 simplifies and reduces the number of external components required by integrating an accurate RMS power detector on chip, which enables a complete AGC loop.

The AD8368 is capable of sustaining high linearity (34 dBm at 70 MHz) at the highest intermediate frequencies, allowing it to be used in all wireless standards, including 2G and 3G, as well as emerging broadband wireless standards such as 802.16 (WiMAX). The 380-MHz frequency range of the device allows it to be used in both receive and transmit paths within any wireless infrastructure standard where the use of one or more AGC loops optimizes the base station dynamic range or allows you to add additional gain for optimal signal dynamic range and sensitivity.

Operating from a single supply voltage of 4.5 to 5.5 V, the AD8368 consumes only 54 mA of current. The device costs $4.55 per unit in 1,000-piece quantities. It’s available in a 24-pin LFCSP package.

Analog Devices, Inc.
www.analog.com