The Texas Instruments PGA2310 series is a high-performance, stereo audio volume control designed for professional and high-end consumer audio systems. It has the ability to operate from ±15-V analog power supplies, enables it 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 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 devices.

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
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

Audio Amplifiers, Texas Instruments