PT2811-LQ [PTC]
3W Stereo Class-D Amplifier with Audio Processor;
| 型号： | PT2811-LQ |
| 厂家： | 
PRINCETON TECHNOLOGY CORP |
| 描述： | 3W Stereo Class-D Amplifier with Audio Processor |
| 文件： | 总5页 (文件大小：206K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PT2811
3W Stereo Class-D Amplifier with
Audio Processor
DESCRIPTION
FEATURES
The PT2811 is an integrated 3W stereo Class-D
amplifier with audio processor. The input selector
supports 3 Single-Ended and 1 Fully-Differential input
can be chose. The highly integration of the audio
processor and class-D amplifier can further reduce
external components BOM and provides better audio
experience. All of functions are controlled via I2C bus.
Supply Voltage: 3~6V
3W X 2 Class-D power amplifier (VDD=5V, RL=4Ω)
1 Fully-Differential input
3 Single-Ended audio inputs
Programmable input gain from 0 to +15dB
Bass and Treble control
Master volume in 1dB/step from 0 to -79dB
Advanced soft-mute and multiple soft-step volume
technology eliminate audible click during volume and
input sources changing.
APPLICATIONS
PC/Video Projector
Portable media player
Audio duck system
Built-in RF noise filter
Shutdown function for power saving
Over temperature and over current protection
Controlled by I2C interface
Flat panel display with audio inputs
Available in 48 Pins, LQFP package
block diagram
LON
LGND
LVDD
LOP
ROP
RVDD
RGND
RON
LINP
RINP
RINN
LCH CLASS-D
(+20/+26 dB)
RCH CLASS-D
(+20/+26 dB)
OSC Generator
LINN
SD
OE
VDD
Digital
Interface
SDA
SCL
Bypass
GND
ROUT
RB2
Logic
Control
Power
Management
LOUT
LB2
Bass
Bass
LB1
RB1
Volume
Soft Step
(0~-79dB)
Volume
Soft Step
(0~-79dB)
LT
RT
Treble
Treble
Soft
Soft
Mute
Mute
Protection Circuitry
INPUT
Gain
INPUT
Gain
Fully-Differential
input
INPUT
Multiplexer
INPUT
Multiplexer
L1
DIFFR+
R1
L3
L2
DIFFL-
DIFFR-
R2
R3
DIFFL+
Tel: 886-66296288‧Fax: 886-29174598‧ http://www.princeton.com.tw‧2F, No. 233-1, Baociao Rd., Sindian Dist., New Taipei City 23145, Taiwan
PT2811
3W Stereo Class-D Amplifier with
Audio Processor
APPLICATION CIRCUIT
P1
L1
L2
FB
FB
+5V
Host
MCU
P2
GND
C32
C33
C34
10uF
10uF
100uF
13 NC
14 R3
NC
RON
NC
48
47
46
45
44
43
42
41
40
39
38
37
L3
FB
AUX
15 R2
U1
16 R1
RGND
RVDD
ROP
LOP
C27 1uF
C26 1uF
RSPK
17 DIFFR+
FB
FB
L4
L5
18 DIFFR-
BT
PT2811
19 DIFFL-
20 DIFFL+
LVDD
LGND
NC
U2
21
L1
LSPK
22 L2
23 L3
24 NC
Audio
FB
L6
LON
NC
Lowpass Filter (option)
TV
Tuner
BT=Bluetooth module with fully differential output.
The ferrite bead lowpass filter is an optional item; it is useful to reduction the EMI emission.
V1.1
2
January 2014
PT2811
3W Stereo Class-D Amplifier with
Audio Processor
ORDER INFORMATION
Valid Part Number
Package Type
Top Code
PT2811-LQ
48 Pins, LQFP, 7 X 7 mm
PT2811-LQ
PIN CONFIGURATION
1
2
3
4
5
6
7
8
9
RINN
RINP
NC
NC
LINN
LINP
NC
36
35
34
33
32
31
30
29
28
27
26
25
VDD1
VDD2
SD
GND1
GND2
OE
PT2811
SDA
BYPASS
LOUT
LB1
SCL
ROUT
10 RB1
11 RB2
12 RT
LB2
LT
V1.1
3
January 2014
PT2811
3W Stereo Class-D Amplifier with
Audio Processor
PIN DESCRIPTION
Pin Name
RINN
I/O
I
Description
Pin No.
Negative input of right channel Class-D amp
Positive input of right channel Class-D amp
No connection
1
2
3
4
5
RINP
NC
I
-
VDD1
VDD2
P
P
Power input for internal circuits
Power input for internal circuits
Shutdown control pin. Sets to “logic-low” will turn off whole chip and pull up to
“logic-high” to back to normal operation.
I2C bus data input
SD
I
6
SDA
SCL
ROUT
RB1
RB2
RT
I
I
O
I
O
I
-
7
8
9
I2C bus clock input
Right channel line out
Capacitor 1 for right channel Bass controller
Capacitor 2 for right channel Bass controller
Capacitor for right channel Treble controller
No connection
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
NC
R3
I
Input 3 of right channel
R2
I
Input 2 of right channel
R1
I
Input 1 of right channel
DIFFR+
DIFFR-
DIFFL-
DIFFL+
L1
I
I
I
I
Differential right channel “+” input
Differential right channel “-” input
Differential left channel “-“ input
Differential left channel “+” input
Input 1 of left channel
I
L2
I
Input 2 of left channel
L3
I
Input 3 of left channel
NC
-
No connection
LT
LB2
LB1
I
O
I
O
P
I
P
P
-
Capacitor for left channel Treble controller
Capacitor 2 for left channel Bass controller
Capacitor 1 for left channel Bass controller
Left channel line out
Bypass cap for Internal Voltage Reference, a 2.2µF cap is recommended.
Output Enable setting, connect a 0.22F cap to GND.
Ground
LOUT
BYPASS
OE
GND2
GND1
NC
Ground
No connection
LINP
LINN
NC
I
I
-
Positive input of left channel Class-D amp
Negative input of left channel Class-D amp
No connection
NC
-
No connection
LON
NC
O
-
Negative output of left channel Class-D amp
No connection
LGND
LVDD
LOP
ROP
RVDD
RGND
NC
P
P
O
O
P
P
-
Power ground of left channel Class-D amp
Power input of left channel Class-D amp
Positive output of left channel Class-D amp
Positive output of right channel Class-D amp
Power input of right channel Class-D amp
Power ground of right channel Class-D amp
No connection
RON
NC
O
-
Negative output of right channel Class-D amp
No connection
V1.1
4
January 2014
PT2811
3W Stereo Class-D Amplifier with
Audio Processor
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 Dist., New Taipei City 23145, Taiwan
Tel: 886-2-66296288
Fax: 886-2-29174598
http://www.princeton.com.tw
V1.1
22
January 2014
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