PGA2311UA/1K

立体声音频音量控制 STEREO AUDIO VOLUME CONTROL

Description

The PGA2311 device is a high-performance, stereo audio volume control designed for professional and

high-end consumer audio systems. The PGA2311 uses an internal high-performance operational amplifier to yield low noise and distortion. The PGA2311 also provides the capability to drive 660-Ω 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 PGA2311 devices.

Features

• 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 U-Grade

– 0.0002% THD+N at 1 kHz A-Grade

• Noise-Free Level Transitions

• Low Interchannel Crosstalk: −130 dBFS

• Power Supplies: ±5-V Analog, +5-V Digital

• Available in PDIP-16 and SOIC-16 Packages

• Pin- and Software-Compatible With the Crystal CS3310

Applications

• Audio Amplifiers

• Mixing Consoles

• Multi-Track Recorders

• Broadcast Studio Equipment

• Musical Instruments

• Effects Processors

• A/V Receivers

• Car Audio Systems