STA538 Datasheet, PDF (1/59 Pages) STMicroelectronics – 2 x 1.3 W class-D amplifier with analog or digital input 2.0 multichannel digital audio processor with FFX

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
■ FFX^TM 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 FFX^TM
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 mΩ output CMOS R_dson
■ > 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
TFBGA48
VFQFPN52
Order codes
Part number
STA538B
STA538Q
January 2007
Rev 1
Package
TFBGA48 (tube)
VFQFPN52 (tube)
1/59
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