STA529 is a 2x100mW digital stereo power amplifier chip produced by STMicroelectronics, with analog or digital input, 2.0 multi-channel digital audio processor, FFX features.
The STA529 is a digital stereo class-D audio amplifier designed for high-efficiency digital-to-power-audio conversion in portable devices such as laptops and digital cameras. It integrates an audio DSP, an ST proprietary high-efficiency class-D driver, and a CMOS power output stage.
Key features include up to 96 dB dynamic range, sample rates from 8 kHz to 192 kHz, and the FFX™ class-D driver which allows operation without external LC filters or heatsinks. The device supports both digital volume control and direct conversion of input signals into output power via the I2CDIS pin.
| Dynamic Range | Up to 96 dB |
|---|---|
| Sample Rates | 8 kHz to 192 kHz |
| Analog Power Supply Range | 1.80 V to 3.60 V |
| Digital Power Supply Range | 1.55 V to 1.95 V |
| ADC Resolution | 16-bit |
| SNR Analog-to-Digital Converter | >90 dB |
| Efficiency | 90% |
The STA529 is available in TFBGA48 and VFQFPN52 packages.
No, the innovative class-D modulation allows it to work without external LC filters.
Yes, the 12CDIS pin disables the audio DSP functions.