FEATURES
D DIGITALLY-CONTROLLED ANALOG VOLUME
CONTROL:
Two Independent Audio Channels
Serial Control Interface
Zero Crossing Detection
Mute Function
D WIDE GAIN AND ATTENUATION RANGE:
+31.5dB to −95.5dB with 0.5dB Steps
D LOW NOISE AND DISTORTION:
120dB Dynamic Range
0.0003% THD+N at 1kHz
D LOW INTERCHANNEL CROSSTALK:
−126dBFS
D NOISE-FREE LEVEL TRANSITIONS
D POWER SUPPLIES: +15V Analog, +5V Digital
D AVAILABLE IN SOL−16 PACKAGE
D PIN-FOR-PIN COMPATIBLE WITH THE
PGA2310
APPLICATIONS
D AUDIO AMPLIFIERS
D MIXING CONSOLES
D MULTI-TRACK RECORDERS
D BROADCAST STUDIO EQUIPMENT
D MUSICAL INSTRUMENTS
D EFFECTS PROCESSORS
D A/V RECEIVERS
D CAR AUDIO SYSTEMS
DESCRIPTION
The PGA2320 is a high-performance, stereo audio volume
control designed for professional and high-end consumer
audio systems. The ability to operate from ±15V analog
power supplies enables the PGA2320 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 PGA2320 yields low noise and distortion, while
providing the capability to drive 600Ω 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 of multiple
PGA2320 devices.
PGA2320
SBOS312B − JULY 2004 − REVISED DECEMBER 2004
Stereo Audio Volume Control
www.ti.com
Copyright 2004, Texas Instruments Incorporated
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments
semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
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