Overview

The STA321 is a single chip solution for digital audio processing applications of up to 4.0 channels.

The STA321 is part of the Sound Terminal™ family that together with the digital power stage provides full digital audio streaming to the speaker, offering cost effectiveness, low energy dissipation and sound enrichment.

Features

■ High efficiency FFX™ class-D modulator

■ 100-dB dynamic range

■ Two stereo channels with I2S input/output data interface

■ 16-bit stereo ADC input with PGA and microphone biasing

■ Analog and digital muxing/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: up to 0.5 W/channel

■ pfStart™ for pop-free single-ended operations

■ Play and record simultaneous operation

■ 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.