Audio Volume Control 28-Pin SOIC T/R

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 600O 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.

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