TS2012 Datasheet, PDF (1/30 Pages) STMicroelectronics – Filter-free stereo 2x2.8W class D audio power amplifer

TS2012
Filter-free stereo 2x2.8W class D audio power amplifer
Features
■ Operating range from V_CC=2.5V to 5.5V
■ Standby mode active low
■ Output power per channel : 1.35W @5V or
0.68W @ 3.6V into 8Ω with 1% THD+N max.
■ Output power per channel : 2.2W @5V into 4Ω
with 1% THD+N max.
■ Four gains select : 6, 12, 18, 24 dB
■ Low current consumption
■ PSRR: 70dB typ @ 217Hz with 6dB gain.
■ Fast start-up phase: 1ms
■ Thermal shutdown protection
■ QFN20 4x4mm lead-free package
Applications
■ Cellular phone
■ PDA
■ Flat panel TV
Description
The TS2012 is a stereo fully differential class D
power amplifier. Able to drive up to 1.35W into an
8Ω load at 5V per channel. It achieves
outstanding efficiency compared to typical class
AB audio amps.
The device has four different gain settings utilizing
two discrete pins: G0 and G1.
Pop & click reduction circuitry provides low on/off
switch noise while allowing the device to start
within 1ms.
Two standby pins (active low) allow each channel
to be switched off independently.
The TS2012 is available in a QFN20 package in
4x4 mm dimension.
TS2012IQT - QFN20 (4x4)
Pin connections (top view)
20 19 18 17 16
1 G1
2 Lout+
3 PVCC
4 PGND
5 Lout-
G0 15
Rout+ 14
PVCC 13
PGND 12
Rout- 11
6
7 8 9 10
Block diagram
20 LIN +
19 LIN -
15 G0
1 G1
Gain
Select
16 RIN +
17 RIN -
7 STBY L
8 STBY R
Gain
Select
Standby
Control
PWM
H
Bridge
LOUT+ 2
LOUT- 5
Oscillator
PWM
H
Bridge
ROUT+ 14
ROUT- 11
December 2007
Rev 1
1/30
www.st.com
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