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PTC

PT2811 Datasheet Preview

PT2811 Datasheet

3W Stereo Class-D Amplifier

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DESCRIPTION
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.
APPLICATIONS
PC/Video Projector
Portable media player
Audio duck system
Flat panel display with audio inputs
PT2811
3W Stereo Class-D Amplifier with
Audio Processor
FEATURES
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.
Built-in RF noise filter
Shutdown function for power saving
Over temperature and over current protection
Controlled by I2C interface
Available in 48 Pins, LQFP package
block diagram
LON
LGND LVDD LOP
ROP
RVDD RGND RON
LINP
LINN
SD
SDA
SCL
LOUT
LB2
LB1
LT
LCH CLASS-D
(+20/+26 dB)
OSC Generator
RCH CLASS-D
(+20/+26 dB)
Digital
Interface
Bass
Treble
Soft
Mute
INPUT
Gain
INPUT
Multiplexer
Logic
Control
Power
Management
Volume
Soft Step
(0~-79dB)
Volume
Soft Step
(0~-79dB)
Protection Circuitry
Fully-Differential
input
Bass
Treble
Soft
Mute
INPUT
Gain
INPUT
Multiplexer
RINP
RINN
OE
VDD
Bypass
GND
ROUT
RB2
RB1
RT
L3 L2 L1
DIFFL+ DIFFL- DIFFR- DIFFR+
R1 R2 R3
Tel: 886-66296288Fax: 886-29174598http://www.princeton.com.tw2F, No. 233-1, Baociao Rd., Sindian Dist., New Taipei City 23145, Taiwan




PTC

PT2811 Datasheet Preview

PT2811 Datasheet

3W Stereo Class-D Amplifier

No Preview Available !

APPLICATION CIRCUIT
Host
MCU
AUX
BT
Audio
TV
Tuner
13 NC
14 R3
15 R2
16 R1
17 DIFFR+
18 DIFFR-
19 DIFFL-
20 DIFFL+
21 L1
22 L2
23 L3
24 NC
PT2811
PT2811
3W Stereo Class-D Amplifier with
Audio Processor
NC 48
RON 47
NC 46
RGND 45
RVDD 44
ROP 43
LOP 42
LVDD 41
LGND 40
NC 39
LON 38
NC 37
C32
10uF
L1 FB
P1
+5V
L2
C33
10uF
FB P2
GND
C34
100uF
L3 FB
C27 1uF
C26 1uF
L4 FB
L5 FB
U1
RSPK
U2
L6 FB
LSPK
Lowpass Filter (option)
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


Part Number PT2811
Description 3W Stereo Class-D Amplifier
Maker PTC
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