STA321 is a 4-channel digital audio system produced by ST company. It has a high efficiency FFX™ class-D modulator, 100-dB dynamic range, two stereo channels, 16-bit stereo ADC input, PGA and microphone biasing, analog and digital multiplexing/mixing capability, 4-channel input sample rate converter (8 kHz to 192 kHz), four channels of 24-bit audio processing, flexible channel mapping and routing, output configurations: 2.0-2.1-4.0-Mono, embedded CMOS bridge, pfStart™, simultaneous playback and recording, pre and post mix stages, individual channel and master gain/attenuation, digital gain/attenuation -105 dB to +36 dB in 0.5 dB steps, soft volume update and muting, DC blocking selectable high-pass filter, selectable de-emphasis filter, up to 13 28-bit user programmable biquads (EQ) per channel, bass/treble tone control, ternary, binary or phase shift modulation, PWM output, headphone output with jack detector, I2C control.
The STA321 is a 4-channel digital audio system designed for high-efficiency applications. It features an integrated FFX™ class-D modulator capable of up to 100-dB dynamic range, supporting two stereo channels with I2S input/output interfaces. The device includes a 16-bit stereo ADC with programmable gain and microphone biasing.
| Dynamic Range | 100-dB |
|---|---|
| ADC Input Resolution | 16-bit stereo ADC |
| Audio Processing Channels | Four channels of 24-bit audio processing |
| User Programmable Biquads | Up to 13 28-bit user programmable biquads |
| Output Power (Embedded CMOS Bridge) | up to 0.5 W/channel |
| Operating Temperature Range | 0 to 70°C |
| Package Type | LQFP-64 with exposed pad down (EPD) |
The device provides a 100-dB dynamic range.
Yes, it includes a 16-bit stereo ADC with PGA and microphone biasing.
The embedded CMOS bridge can deliver up to 0.5 W per channel.