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TA1101B

Stereo 10W (4Ω) Class-T™ Digital Audio Amplifier using Digital Power Processing™ Technology

Tripath Technology Inc. 

TECHNICAL INFORMATION

Stereo 10W (4Ω) Class-T™ Digital Audio Amplifier using

Digital Power Processing™ Technology

TA1101B

September 2000

General Description

The TA1101B is a 10W continuous average two-channel Class-T Digital Audio Power

Amplifier IC using Tripath’s proprietary Digital Power Processing™ technology. Class-T

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

amplifiers.

Applications

!"Computer/PC Multimedia

!"DVD Players

!"Cable Set-Top Products

!"Televisions

!"Video CD Players

!"Battery Powered Systems

Benefits

!"Fully integrated solution with FETs

!"Easier to design-in than Class-D

!"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

Features

!"Class-T architecture

!"Single Supply Operation

!"“Audiophile” Quality Sound

!"0.04% THD+N @ 9W, 4Ω

!"0.18% IHF-IM @ 1W, 4Ω

!"6W @ 8Ω, 0.1% THD+N

!"11W @ 4Ω, 0.1% THD+N

!"High Power

!"10W @ 8Ω, 10% THD+N

!"15W @ 4Ω, 10% THD+N

!"High Efficiency

!"88% @ 10W, 8Ω

!"81% @ 15W, 4Ω

!"Dynamic Range = 102 dB

!"Mute and Sleep inputs

!"Turn-on & turn-off pop suppression

!"Over-current protection

!"Over-temperature protection

!"Bridged outputs

!"30-pin Power SOP package

Typical Performance

THD+N versus Output Power

10

VDD = 12V

5 f = 1kHz

Av = 12

BW = 22Hz - 22kHz

2

1

0.5

0.2

0.1

RL= 8Ω

0.05

0.02

0.01

500m

1

2

5

Output Power (W)

RL= 4Ω

10

20

TA1101B, Rev. 2.2, 08.17.00

1

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