STA538 datasheet(1/59 Pages) STMICROELECTRONICS

Part #	STA538

Description	2 x 1.3 W class-D amplifier with analog or digital input 2.0 multichannel digital audio processor with FFX

PDF	59 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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1 / 59 page

January 2007

Rev 1

1/59

1

STA538

2 x 1.3 W class-D amplifier with analog or digital input

2.0 multichannel digital audio processor with FFX

Features

■ Up to 96 dB dynamic range

■ Sample rates from 8 kHz to 192 kHz

■ FFXTM class-D driver

■ 1.5 V to 1.95 V digital power supply

■ 1.5 V to 3.6 V analog power supply

■ 18-bit audio processing and class-D FFXTM

modulator

■ Digital volume control:

– +36 dB to 105 dB in 0.5 dB steps

– Software volume update

■ Individual channel and master gain/attenuation

■ Automatic invalid input detect mute

■ 2-channel I2S input/output data interface

■ Digitally controlled POP-free operation

■ Input and output channel mapping

■ 250 m

Ω output CMOS Rdson

■ > 90% efficiency

■ 2 x 1.3 W (10% THD) on 4

Ω at 3.6 V

■ 2 x 0.7 W (10% THD) on 8

Ω at 3.3 V

■ Stereo headphone plus mono speaker

application:

– 50 mW stereo into 32

Ω headphone,

1.2 W mono into 4

Ω speaker at 3.3 V

– 100 mW stereo into 16

Ω headphone,

1.2 W mono into 4

Ω speaker at 3.3 V

Order codes

TFBGA48

VFQFPN52

Part number

Package

STA538B

TFBGA48 (tube)

STA538Q

VFQFPN52 (tube)

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