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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.