STA333IS

The STM-STA333IS is an integrated circuit comprising digital audio processing, digital amplifier control and an FFX™ power output stage to create a high-power, single-chip FFX solution for all-digital amplification with high quality and high efficiency. The STM-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 STM-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 FFX™ processing are provided. The STM-STA333IS is part of the Sound Terminal® family that provides full digital audio streaming to the speaker, offering cost effectiveness, lowpower dissipation and sound enrichment.

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, OutGnd, 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 * fS input mode support