Brief Description
The FX009A Digitally Adjustable Amplifier Array is intended to replace trimmer potentiometers and volume controls in Cellular, PMR, Telephony and Communications applications where d.c., voice or data signals need adjustment. The FX009A is a low-noise single-chip LSI consisting eight digitally controlled amplifier stages, each with 15 distinct gain/attenuation steps. Control of each individual amplifier is by an 8-bit serial data stream.

FEATUREs/Applications
● 8 Digitally Controlled Low-Noise Amplifiers
● 15 Gain/Attenuation Steps
● 7 Trimmers, with a ± 3dB Range in 0.43dB Steps
● 1 Volume Trimmer, with a ± 14dB Range in 2.0dB Steps
● 8-Bit Serial Data Control
● Output Mute/Powersave Function
● Audio and Data Gain Control Applications
● Cellular, PMR, PABX Applications