Texas Instruments PGA4311U/1K

Description
The PGA4311 is a highperformance, 4channel audio volume control designed for professional and highend consumer audio systems.
It uses highperformance operational amplifier stages internal to the PGA4311, yielding low noise and distortion, while providing the capability to drive 600Ω loads directly without buffering.
The 3wire serial control interface allows for connection to a wide variety of host controllers, in addition to support for daisychaining of multiple PGA4311 devices.

Features
Digitallycontrolled analog volume control:
Four independent audio channels
Serial control interface
Zerocrossing detection
Mute function
4channel audio volume control
Wide gain and attenuation range:
31.5dB to 95.5dB with 0.5dB steps
Low noise and distortion:
120dB dynamic range
0.0004% THD N at 1kHz (UGrade)
0.0002% THD N at 1kHz (AGrade)
Noisefree level transitions
Low interchannel crosstalk: 130dBFS
Power supplies: 5V analog, 5V digital
Available in an SOP28 package

Applications
Audio amplifiers
Mixing consoles
Multitrack recorders
Broadcast studio equipment
Musical instruments
Effects processors
A/V receivers
Car audio systems