Tri p ath Techn o l o g y, I n c. - T echn i cal I n fo rmation

1

TAA2008 –KLi/1.0/05.06

TAA2008

STEREO 9W (8

Ω) CLASS-T™ DIGITAL AUDIO AMPLIFIER USING

DIGITAL POWER PROCESSING™ TECHNOLOGY

TECHNI C A L INF O RM A T ION

Re v i sion 1.0 – M a y 2006

GEN E RA L DESCR I PTION

The TAA2008 is a 9W/ch continuous average two-channel Class-T Digital Audio Power Amplifier IC

using Tripath’s proprietary Digital Power Processing™ technology. The TAA2008, in a QFN package,

along with extremely high efficiency, allows for a very compact amplifier design. Class-T amplifiers

offer both the audio fidelity of Class-AB and the power efficiency of Class-D amplifiers.

APPLICA T IONS

LCD TV’s

LCD Monitors

Plasma TV’s

Computer/PC Multimedia

Battery Powered Systems

BENEFITS

Fully integrated solution with FETs

Compact packaging and board design

Reduced system cost with no heat sink

Dramatically improves efficiency versus Class-

AB

Signal fidelity equal to high quality linear

amplifiers

High dynamic range compatible with digital

media such as CD, DVD, and Internet audio

Capable of driving a wide range of load

impedances

TYPICAL PERFOR MANCE

FEA T UR ES

Class-T architecture

Single Supply Operation

“Audiophile” Quality Sound

0.025% THD+N @ 5W, 8

Ω

0.1% IHF-IM @ 1W, 8

Ω

6.3W @ 8

Ω, 0.1% THD+N

3.5W @ 16

Ω, 0.1% THD+N

High Power

14.25W @ 6

Ω, 10% THD+N

9W @ 8

Ω, 10% THD+N

5W @ 16

Ω, 10% THD+N

Extremely High Efficiency

89% @ 5W, 16

Ω

86% @ 9W, 8

Ω

Dynamic Range = 98.5 dB

Mute and Sleep modes

Improved turn-on & turn-off pop

suppression

Over-current protection with automatic

restart circuit

Over-temperature protection

Space saving 32-pin 8mm x 8mm x 1mm

QFN package with exposed pad

0.01

10

0.02

0.05

0.1

0.2

0.5

1

2

5

1

20

2

3

4

5

6

7

8

9 10

VDD = 12V

f = 1kHz

A

BW = 22Hz - 20kHz(AES17)

R

R

R

R

THD+N versus Output Power

Output Power (W)

PGND1

5VGEN

DCAP2

DCAP1

V5D

AGND1

INV2

DGND

PGND2

FAULT

SLEEP

AGND3

BIASCAP

18

17

1

8

7

6

5

4

3

2

OAOUT2

24

19

20

21

22

23

CPUMP

VDDA