TI PGA2310UA/1K

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 Pin and Software Compatible With the PGA2311 and Cirrus Logic CS3310

The PGA2310 is a high-performance, stereo audio volume control designed for professional and highend 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 daisychaining multiple PGA2310 devices.

The PGA2310 is a stereo audio volume control that can be used in a wide array of professional and consumer audio equipment. The PGA2310 is fabricated in a mixed-signal BiCMOS process for superior analog characteristics.

The heart of the PGA2310 is a resistor network, an analog switch array, and a high-performance bipolar op amp stage. The switches select taps in the resistor network that determine the gain of the amplifier stage. Switch selections are programmed using a serial control port. The serial port allows connection to a wide variety of host controllers.

• 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
• Pin and Software Compatible With the PGA2311 and Cirrus Logic CS3310

• Audio Amplifiers
• Mixing Consoles
• Multi-Track Recorders
• Broadcast Studio Equipment
• Musical Instruments
• Effects Processors
• A/V Receivers
• Car Audio Systems