TPA6204A1

SLOS429 − MAY 2004

1.7W MONO FULLY DIFFERENTIAL AUDIO POWER AMPLIFIER

FEATURES

and PDAs

THD = 10% (Typ)

− Improved PSRR (−80 dB) and Wide Supply

Voltage (2.5 V to 5.5 V) for Direct Battery

Operation

− Fully Differential Design Reduces RF

Rectification

− −63 dB CMRR Eliminates Two Input

Coupling Capacitors

TPA6211A1 in QFN Package

(DRB)

APPLICATIONS

DESCRIPTION

The TPA6204A1 is a 1.7-W mono fully-differential

amplifier designed to drive a speaker with at least 8-

Ω

impedance

while

consuming

only

20

total

printed-circuit board (PCB) area in most applications. The

device operates from 2.5 V to 5.5 V, drawing only 4 mA of

quiescent supply current. The TPA6204A1 is available in

the space-saving 3 mm x 3 mm QFN (DRB) package.

The

TPA6204A1

is

ideal

for

PDA/smart

phone

applications due to features such as −80-dB supply

voltage rejection from 20 Hz to 2 kHz, improved RF

rectification immunity, small PCB area, and a fast startup

with minimal pop.

APPLICATION CIRCUIT

_

+

VDD

VO+

VO−

GND

6

5

8

7

To Battery

Cs

Bias

Circuitry

IN−

IN+

4

3

2

+

−

In From

DAC

SHUTDOWN

RI

RI

1

C(BYPASS)(1)

100 k

Ω

40 k

Ω

40 k

Ω

8

SHUTDOWN

BYPASS

IN+

IN−

VO−

GND

VDD

VO+

8-pin QFN (DRB) PACKAGE

(TOP VIEW)

7

6

5

1

2

3

4

(1) C(BYPASS) is optional.

DGN Package

(TOP VIEW)

1

2

3

4

8

7

6

5

SHUTDOWN

BYPASS

IN+

IN−

VO−

GND

VDD

VO+

PRODUCTION DATA information is current as of publication date. Products

conform to specifications per the terms of Texas Instruments standard warranty.

Production processing does not necessarily include testing of all parameters.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments

semiconductor products and disclaimers thereto appears at the end of this data sheet.

www.ti.com

Copyright

 2004, Texas Instruments Incorporated