PTC PT2314E-S

Preliminary PT2314E
Stereo Audio Processor for Home/TV Audio
DESCRIPTION
FEATURES
The PT2314E is an audio processor designed for
versatile application, includes 4 stereo input selector
with adjustable gain, 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.
• 4 stereo inputs with gain selection, range from 0dB
to +11.25dB in 3.75dB/step
• 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 PT2314 and PT2314A
Due to the high reliability requirement from the audio
business, the PT2314E improves
both audio
performances and input surge current capability, these
causes the PT2314E is the best solution for the
cost-effective audio systems.
APPLICATIONS
• Flat Panel TV
• Home Audio System
• Powered Speaker System
APPLICATION CIRCUIT
PT2314E
VDD
Input Surge
Protection
L
AUDIO 4
R
L
AUDIO 3
R
L
AUDIO 2
R
L
AUDIO 1
R
27n
27n
2.2K
2.2uF
2.2K
2.2uF
2.2K
2.2K
2.2uF
2.2uF
100n
2.2uF
2.2K
2.2uF
2.2K
2.2uF
2.2K
2.2uF
2.2K
2.2uF
1 VDD
REF 28
2 AGND
SCL 27
3 TREB_L
SDA 26
4 TREB_R
DGND 25
5 RIN
OUT_L 24
6 ROUT
OUT_R 23
7 LOUD_R
8 RIN4
BIN_R 21
9 RIN3
BOUT_L 20
10 RIN2
BIN_L 19
11 RIN1
12 LOUD_L
100n
BOUT_R 22
LOUT 18
LIN 17
13 LIN4
LIN1 16
14 LIN3
LIN2 15
22uF
MCU
Front Left
10uF
10uF
100n
Front Right
5.6K
100n
100n
Power
Amplifier
5.6K
100n
2.2uF
Tel: 886-66296288‧Fax: 886-29174598‧ http://www.princeton.com.tw‧2F, 233-1, Baociao Road, Sindian, Taipei 23145, Taiwan
PT2314E
BLOCK DIAGRAM
Speaker Attenuator
With Mute
OUT_R
OUT_L
REF
REF
TREBLE
TREB_L
BIN_L
TREBLE
Master
Volume
BASS
BOUT_L
REF
LOUD_L
TREB_R
BIN_R
BASS
BOUT_R
REF
Loud
SW
LOUDNESS
LOUDNESS
LOUD_R
LIN
LOUT
LIN4
LIN3
LIN2
LIN1
Input SW and
GAIN
REF
VDD
RIN
ROUT
RIN4
RIN3
RIN2
RIN1
REF
INT
Ref
SCL
REF
BIAS
REF
I2C
DECODER
SDA
DGND
AGND
PRE1.0
2
September 2009
PT2314E
ORDER INFORMATION
Valid Part Number
PT2314E-S
Package Type
28 Pins, SOP, 300mil
Top Code
PT2314E
PIN CONFIGURATION
VDD 1
28 REF
AGND 2
27 SCL
TREB_L 3
26 SDA
TREB_R 4
25 DGND
RIN 5
24 OUT_L
ROUT 6
23 OUT_R
LOUD_R 7
PT2314E
RIN4 8
21 BIN_R
RIN3 9
20 BOUT_L
RIN2 10
19 BIN_L
RIN1 11
18 LOUT
LOUD_L 12
PRE1.0
22 BOUT_R
17 LIN
LIN4 13
16 LIN1
LIN3 14
15 LIN2
3
September 2009
PT2314E
PIN DESCRIPTION
Pin Name
VDD
AGND
TREB_L
TREB_R
RIN
ROUT
LOUD_R
RIN4
RIN3
RIN2
RIN1
LOUD_L
LIN4
LIN3
LIN2
LIN1
LIN
LOUT
BIN_L
BOUT_L
BIN_R
BOUT_R
OUT_R
OUT_L
DGND
SDA
SCL
REF
PRE1.0
I/O
I
I
I
O
I
I
I
I
I
I
I
I
I
I
I
O
I
O
I
O
O
O
I
I
-
Description
Supply input voltage
Analog ground
Left channel input for treble controller
Right channel input for treble controller
Right channel volume controller input
Right channel Input selector output
Right channel loudness input
Right channel input 4
Right channel input 3
Right channel input 2
Right channel input 1
Left channel loudness input
Left channel input 4
Left channel input 3
Left channel input 2
Left channel input 1
Left channel volume controller input
Left channel Input selector output
Left channel input for bass controller
Left channel output for bass controller
Right channel input for bass controller
Right channel output for bass controller
Right channel output
Left channel output
Digital ground
I2C data input
I2C clock input
Analog reference voltage (1/2VDD)
4
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
September 2009
PT2314E
IMPORTANT NOTICE
Princeton Technology Corporation (PTC) reserves the right to make corrections, modifications, enhancements,
improvements, and other changes to its products and to discontinue any product without notice at any time.
PTC cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a PTC product. No
circuit patent licenses are implied.
Princeton Technology Corp.
2F, 233-1, Baociao Road,
Sindian, Taipei 23145, Taiwan
Tel: 886-2-66296288
Fax: 886-2-29174598
http://www.princeton.com.tw
PRE1.0
5
September 2009