STA529(2012) Datasheet - STMicroelectronics

Description
The STA529 is a digital stereo class-D audio amplifier. It includes an audio DSP, an ST proprietary high-efficiency class-D driver and CMOS power output stage. It is intended for high-efficiency digital-to-power-audio conversion for portable applications. The STA529 also provides output capabilities for FFX™. In conjunction with a power device, the STA529 provides high-quality digital amplification.

FEATUREs
■ Up to 96 dB dynamic range
■ Sample rates from 8 kHz to 192 kHz
■ FFX™ class-D driver
■ 1.55 V to 1.95 V digital power supply
■ 1.80 V to 3.60 V analog and I/O power supply
■ 18-bit audio processing and class-D FFX™ modulator
■ >90-dB SNR analog-to-digital converter
■ Digital volume control:
   – +36 dB to -105 dB in 0.5-dB steps
   – Software volume update
■ 16-bit ADC
■ Individual channel and master gain/attenuation
■ Automatic invalid input detect mute
■ 2-channel I2S input/output data interface
■ Digitally controlled pop-free operation
■ 90% efficiency
■ Output power for stereo headphones or stereo speakers applications (at THD = 10% and VCC = 3.3 V):
   – 45 mW with 32-Ω headphones
   – 85 mW with 16-Ω headphones
   – 720 mW with 8-Ω speakers
   – 1.1 W with 4-Ω speakers

APPLICATIONs
■ Portable devices
   – Laptops
   – Digital cameras
   – Microless applications