PT2315E
Stereo Audio Processor for Home TV Audio
Tel: 886-2-66296288
‧
Fax: 886-2-29174598
‧
http://www.princeton.com.tw
‧
2F, 233-1, Baociao Rd., Sindian Dist., New Taipei City 23145, Taiwan
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
ï‚· Flat Panel TV
ï‚· Home Audio System
ï‚· Powered Speaker System
FEATURES
ï‚· Master volume from 0 dB to -78.75dB in 1.25dB/step
ï‚· Speaker attenuator for balance, range from 0dB to
-38.75dB in 1.25dB/step
ï‚· Each channel output can be muted individually.
ï‚· Low frequency loudness compensation
ï‚· Bass and Treble control, range from -14dB to +14dB
in 2dB/step
ï‚· Wide operation range (VDD=4V to 10V)
ï‚· Low harmonic distortion, low noise
ï‚· 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
PT2315E
V1.1
March 2010
2
APPLICATION CIRCUIT
22uF
VDD
2.7n
2.7n
100n
100n 100n
100n
100n
100n
5.6K
5.6K
Left
Right
10uF
10uF
Power
Amplifier
MCU
PT2315E
2.2uF
2.2uF
AUDIO 1
2.2K
2.2K
L
R
Input Surge
Protection
REF
VDD
AGND
TREB_L
TREB_R
RIN
LOUD_R
LOUD_L
LIN
BOUT_L
BIN_L
BIN_R
BOUT_R
OUT_R
OUT_L
DGND
SDA
SCL1
2
3
4
5
6
7
8
9
10 11
12
13
14
15
16
17
18
19
20
NC
NC