TS2012, TS2012IQT

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TS2012
Filter-free stereo 2x2.8W class D audio power amplifer
Features

Operating range from VCC=2.5V to 5.5V Standby mode active low Output power per channel : 1.35W @5V or 0.68W @ 3.6V into 8 with 1% THD+N max. Output power per channel : 2.2W @5V into 4 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
3 1 2
G1

TS2012IQT - QFN20 (4x4)

Pin connections (top view)
20
Lin+

19
Lin-

18
AGND

17
Rin-

16
Rin+

G0 Rout+

15 14 13 12 11

Lout+ PVCC PGND LoutSTBYL STBYR

PVCC PGND RoutAVCC

Applications

4 5

Cellular phone PDA Flat panel TV

6

NC

7

8

9

10

Description
The TS2012 is a stereo fully differential class D power amplifier. Able to drive up to 1.35W into an 8 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. Block diagram
9 3 AVCC PVCC PVCC 13

NC

20 19

LIN + LIN -

Gain Select PWM

H Bridge

LOUT+ LOUT-

2 5

15 1

G0 G1 Oscillator 300k 300k

16 17

RIN + RIN STBY L STBY R 300k 300k

Gain Select PWM

H Bridge

ROUT+ ROUT-

14 11

7 8

Standby Control

AGND

PGND 4

18

December 2007

Rev 1

12

PGND

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TS2012 DATASHEET