TS4961T STMicroelectronics, TS4961T Datasheet

TS4961T

Manufacturer Part Number

TS4961T

Description

Mono Class D Audio Power Amplifier With Dedicated Analog Switch

Manufacturer

STMicroelectronics

Datasheet

1.TS4961T.pdf (49 pages)

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Features

■

Applications

■

Description

The TS4961T is a smart combination of one

mono class D audio power amplifier and a

high-speed CMOS low-voltage dual power analog

SPST.

One of the key functions of this device is the

switch mode of the various audio signals coming

from the codec or baseband through the

loudspeaker. It can drive up to 1.6 W into a 4 Ω

load and 0.95 W into an 8 Ω load. It achieves an

outstanding efficiency of up to 88% typical.

September 2008

Wide operating voltage range from

Audio amplifier standby mode active low

Output power: 1.6 W at 4.2 V or 0.75 W at

3.0 V into 4 Ω with 1% THD+N maximum

Output power: 0.95 W at 4.2 V or 0.45 W at

3.0 V into 8 Ω with 1% THD+N maximum

Adjustable gain via external resistors

Low current consumption 2 mA at 3 V

Efficiency: 88% typical

Signal-to-noise ratio: 85 dB typical

PSRR: 63 dB typical at 217 Hz with 6 dB gain

PWM base frequency: 250 kHz

Low pop and click noise

Dual Power SPST with separated control

Ultra-high off-isolation on analog switch:

-80 dB typical from 20 Hz to 20 kHz

Cellular telephones

PDAs

Notebook PCs

Mono class D audio power amplifier with dedicated analog switch

= 2.4 V to 4.3 V

Rev 1

The audio amplifying gain of the device can be

controlled via two external gain-setting resistors. It

is designed to operate from 2.4 to 4.3 V, making

this device ideal for portable applications.

TS4961TIQT pinout

QFN 16 3 x 3 mm

TS4961T

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