DESCRIPTION APPLICATION FEATURES BLOCK DIAGRAM

PT12913
2 Band Car Audio Processor
DESCRIPTION
The PT12913 is a 2 band audio signal processor
specially designed for car radio applications. The
device includes a high performance audio processor
with fully integrated audio filters. The digital control
allows programming in a wide range of filter
characteristics.
APPLICATION
• Car Audio System
FEATURES
• 3 SE stereo inputs and 1 Quasi-Differential input
with selectable input gain
• Input gain control: 0 to +20dB, 1dB/step
• 2 channels electronic volume with soft step
function: +15 to -79dB with 1dB/step
• Soft mute
• Tone control (Bass and Treble): -20 to +20dB,
1dB/step with softstep
. Bass: f0=100Hz, Q=1.0
. Treble: f0=10KHz, Q=1.25
• Loudness: 0 to 20dB, 1dB/step with softstep
function.
• 4 independent speaker outputs with softstep
volume: +15 to -79dB with 1dB/step
• Controlled by I2C BUS interface
• Low distortion and low noise
• 20-pin SSOP package
BLOCK DIAGRAM
Tel: 886-66296288‧Fax: 886-29174598‧ http://www.princeton.com.tw‧2F, 233-1, Baociao Road, Sindian, Taipei 23145, Taiwan
PT12913
APPLICATION CIRCUIT
10μF
1
CREF
GND
20
2
SE1L
SDA
19
3
SE1R
SCL
18
4
SE2L
VDD
17
5
SE2R
OUTLF
16
2.2μF
2.2μF
2.2μF
2.2μF
10μF
47k
10μF
47k
10μF
47k
10μF
47k
2.2μF
SE3L
6
OUTRF
15
2.2μF
7
2.2μF
8
SE3R
OUTLR
DIFFL
OUTRR
14
13
10μF
9
DIFFG
NC
12
10
DIFFR
MUTE
11
2.2μF
ORDER INFORMATION
Part Number
PT12913-X
V1.1
Package Type
20 Pins, SSOP, 150mil
2
Top Code
PT12913-X
November 2012
PT12913
PIN CONFIGURATION
CREF
1
20
GND
SE1L
2
19
SDA
SE1R
3
18
SCL
SE2L
4
17
VDD
SE2R
5
16
OUTLF
SE3L
6
15
OUTRF
SE3R
7
14
OUTLR
DIFFL
8
13
OUTRR
DIFFG
9
12
NC
DIFFR
10
11
MUTE
PT12913
PIN DESCRIPTION
Pin Name
CREF
SE1L
SE1R
SE2L
SE2R
SE3L
SE3R
DIFFL
DIFFG
DIFFR
Mute
N.C
OUTRR
OUTLR
OUTRF
OUTLF
VCC
SCL
SDA
GND
V1.1
I/O
O
I
I
I
I
I
I
I
I
I
I
O
O
O
O
I
I/O
-
Description
Reference capacitor
Single-ended input 1 left channel
Single-ended input 1 right channel
Single-ended input 2 left channel
Single-ended input 2 right channel
Single-ended input 3 left channel
Single-ended input 3 right channel
Quasi-differential input left channel
Quasi-differential input ground
Quasi-differential input right channel
Hardware/external Mute control pin
No connection
Rear right output
Rear left output
Front right output
Front left output
Power supply
I2C bus clock
I2C bus data
Ground
3
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
November 2012
PT12913
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
V1.1
20
November 2012