1 Features

1• Digitally-Controlled Analog Volume Control:

– Two Independent Audio Channels

– Serial Control Interface

– Zero Crossing Detection

– Mute Function

• Wide Gain and Attenuation Range: 31.5 dB to

−95.5 dB With 0.5-dB Steps

• Low Noise and Distortion:

– 120-dB Dynamic Range

– 0.0004% THD+N at 1 kHz daisy•

Low Interchannel Crosstalk: −126 dBFS

• Noise-Free Level Transitions

• Power Supplies: 15-V Analog, 5-V Digital

• Available in DIP−16 and SOL−16 Packages

• Pin and Software Compatible With the PGA2311

and Cirrus Logic CS3310™

2 Applications

• Audio Amplifiers

• Mixing Consoles

• Multi-Track Recorders

• Broadcast Studio Equipment

• Musical Instruments

• Effects Processors

• A/V Receivers

• Car Audio Systems

3 Description

The PGA2310 is a high-performance, stereo audio

volume control designed for professional and high- end consumer audio systems. The ability to operate

from ±15-V analog power supplies enables the

PGA2310 to process input signals with large voltage

swings, thereby preserving the dynamic range available in the overall signal path. Using high

performance operational amplifier stages internal to

the PGA2310 yields low noise and distortion, while

providing the capability to drive 600-Ω loads directly

without buffering. The three-wire serial control interface allows for connection to a wide variety of

host controllers, in addition to support for daisy•

chaining multiple PGA2310 devices.