FEATURES

DIGITALLY-CONTROLLED ANALOG VOLUME

CONTROL:

Four Independent Audio Channels

Serial Control Interface

Zero Crossing Detection

Mute Function

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 (U−Grade)

0.0002% THD+N at 1kHz (A−Grade)

NOISE-FREE LEVEL TRANSITIONS

LOW INTERCHANNEL CROSSTALK:

130dBFS

POWER SUPPLIES: ±5V Analog, +5V Digital

AVAILABLE IN AN SOP-28 PACKAGE

APPLICATIONS

AUDIO AMPLIFIERS

MIXING CONSOLES

MULTI−TRACK RECORDERS

BROADCAST STUDIO EQUIPMENT

MUSICAL INSTRUMENTS

EFFECTS PROCESSORS

A/V RECEIVERS

CAR AUDIO SYSTEMS

DESCRIPTION

The PGA4311 is a high−performance, 4-channel audio

volume control designed for professional and high-end

consumer audio systems. Using high performance

operational amplifier stages internal to the PGA4311

yields low noise and distortion, while providing the

capability to drive 600Ω loads directly without buffering.

The 3-wire serial control interface allows for connection

to a wide variety of host controllers, in addition to

support for daisy-chaining of multiple PGA4311

devices.