STA335BWS datasheet(9/68 Pages) STMICROELECTRONICS

9 / 68 page

STA335BWS

Description and block diagram

9/68

Description and block diagram

1.1

Description

The STA335BWS is an integrated solution of digital audio processing, digital amplifier

control, and DDX® power-output stage, thereby creating a high-power single-chip DDX®

solution comprising of high-quality, high-efficiency, all digital amplification.

The STA335BWS is part of the Sound Terminal™ family that provides full digital audio

streaming to the speaker offering cost effectiveness, low energy dissipation and sound

enrichment.

The STA335BWS power section consists of four independent half-bridges. These can be

configured via digital control to operate in different modes. 2.1 channels can be provided by

two half-bridges and a single full-bridge, providing up to 2 x 9 W + 1 x 20 W of power output.

Two channels can be provided by two full-bridges, providing up to 2 x 20 W of power. The IC

can also be configured as a 2.1 channels with 2 x 20 W provided by the device and external

power for DDX® power drive.

Also provided in the STA335BWS are a full assortment of digital processing features. This

includes up to four programmable 28-bit biquads (EQ) per channel, and bass/treble tone

control. AutoModes enable a time-to-market advantage by substantially reducing the

amount of software development needed for certain functions. This includes auto volume

loudness, preset volume curves and preset EQ settings. New advanced AM

radio-interference reduction modes. The serial audio data input interface accepts all

possible formats, including the popular I2S format. Three channels of DDX® processing are

provided. This high-quality conversion from PCM audio to DDX patented tri-state PWM

switching waveform provides over 100 dB SNR and dynamic range.

STA335BWS 数据表(PDF) 9 Page - STMicroelectronics