Preliminary

PT2315E

Stereo Audio Processor for Home TV Audio

DESCRIPTION

The PT2315E is an audio processor designed for

versatile application, includes master volume control

with low frequency loudness compensation, speaker

output attenuator and tone control. It is a good solution

for the home audio signal processing.

Due to the high reliability requirement from the audio

business,

the

PT2315E

improves

both

audio

performances and input surge current capability, these

causes the PT2315E is the best solution for the

cost-effective audio systems.

APPLICATIONS

• Flat Panel TV

• Home Audio System

• Powered Speaker System

FEATURES

• Master volume from 0 dB to -78.75dB in 1.25dB/step

• Speaker attenuator for balance, range from 0dB to

-38.75dB in 1.25dB/step

• Each channel output can be muted individually.

• Low frequency loudness compensation

• Bass and Treble control, range from -14dB to +14dB

in 2dB/step

• Wide operation range (VDD = 4V to 10V)

• Low harmonic distortion, low noise

• Improved and replace PT2315 and PT2315A

BLOCK DIAGRAM

LOUDNESS

LIN

LOUD_L

REF

BOUT_L

BIN_L

TREB_L

TREBLE

BASS

OUT_L

REF

REF

LOUDNESS

REF

TREBLE

BASS

OUT_R

TREB_R

BOUT_R

LOUD_R

RIN

VDD

REF

AGND

REF

SCL

SDA

DGND

I2C

DECODER

BIAS

BIN_R

Master

Volume

Speaker Attenuator

With Mute

INT

Ref

Loud

SW