ST Life.augmented


Sound Terminal 2-channel high-efficiency digital audio system
  • active 活性

The STA333IS is an integrated circuit comprising digital audio processing, digital amplifier control and an FFXpower output stage to create a high-power, single-chip FFX solution for all-digital amplification with high quality and high efficiency.

The STA333IS power section consists of four independent half-bridge stages. Two channels can be provided by two full bridges, delivering up to 10 W + 10 W of power.

Also featured in the STA333IS are new advanced modes for reducing AM radio interference. The serial audio data input interface accepts all possible formats, including the popular I2S format. Two channels of FFXprocessing are provided.

The STA333IS is part of the Sound Terminal®family that provides full digital audio streaming to the speaker, offering cost effectiveness, low-power dissipation and sound enrichment.

pdf Please read
Errata Sheet
pdf 下载

Key Features

  • Wide-range supply voltage (4.5 V - 20 V)
  • 2 channels of ternary PWM (stereo mode)
  • 2 channels of 24-bit FFX
  • 100 dB SNR and dynamic range
  • Selectable 32- to 192-kHz input sampling rates
  • Digital gain -80 dB to +48 dB in 0.5 dB steps
  • Software volume update
  • Individual channel and master gain/attenuation
  • Individual channel and master software and hardware mute
  • Independent channel volume bypass
  • Automatic zero-detect mute
  • Automatic invalid input detect mute
  • Short-circuit detection at startup (Out-Vcc, Out-Gnd, Out 1b-Out 2a)
  • 2-channel I2S input data interface
  • 2 Hz DC cut filter (input)
  • Input channel mapping
  • Automatic volume control for limiting maximum power
  • 96 kHz internal processing sampling rate, 24-bit precision
  • Advanced modes for AM interference frequency switching and noise suppression
  • Embedded thermal-overload and short-circuit protection
  • Video application: 576 * fSinput mode support

图案 资源


Technical Documentation

Product Specifications

描述 版本 大小
DS8917: Sound Terminal® 2-channel high-efficiency digital audio system
3.0 1,595 KB

Application Notes

描述 版本 大小
AN3340: Loudspeaker characterization and compensation
1.3 3,944 KB
AN4199: Two-layer demonstration board based on the STA333IS
1.0 2,420 KB
AN4200: Four-layer demonstration board based on the STA333IS
1.0 2,059 KB
AN4233: Sound Terminal®: a method for measuring the total thermal resistance (Rth) in the final application
1.0 240 KB

Presentations & Training Material

Training Material

描述 版本 大小
Learn the basics about STSpeakerSafe technology
1.0 197 KB

Related Tools and Software

Related Tools and Software

产品型号 描述
STEVAL-CCA053V1 Sound Terminal based on the STA333IS 2.0 channel high-efficiency digital audio system

Publications and Collaterals


描述 版本 大小
APWorkbench software for audio ICs and MEMS microphones
2,349 KB


描述 版本 大小
Analog audio solution
1.0 1,371 KB
FFX - Full flexible amplification
4,722 KB

样品 & 购买

产品型号 Marketing StatusPackagePacking TypeOperating Temperature (min) Operating Temperature (max) Automotive GradeOrder From STUnit Price (US$)*
@ 1000
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STA333ISActiveChip Scale Package 0.5mm pitchTape And Reel070_-1.242Distributor reported inventory date: 2016-02-04
Distributor NameRegionStockMin. order

(*) 建议零售价格仅用于预算,以美元为单位,每。的报价,以当地货币计算的价格,请联系您当地的 ST 销售办事处 或我们的 分销商
(**) 材料声明表格上提供st.com可以是一般的文件,根据最常用的包,包内的家庭。出于这个原因,他们可能不是100%准确,对于一个特定的设备。请联系我们 销售支持 在特定设备上的信息。
Feedback Form
Customer Feedback