ST's Digital Audio SoC delivers 2x20W in 2.57mm x 3.24mm

Only ST has the technologies and audio Intellectual Property to combine advanced signal processing and power circuitry on a single chip, making the new STA333IS digital audio SoC unique in the marketplace. Ideal for battery-operated equipment as well as space-constrained products such as LCD or LED televisions, docking stations and digital wireless speaker systems, the STA333IS features a wide operating voltage range, from 4.5V to 18V.



Delivering superb audio quality, outstanding thermal efficiency and low electromagnetic emissions, the STA333IS has a tiny 8.3mm² footprint which provides design engineers with the extra freedom needed to style new generations of audio products.



Operating without an external microcontroller, the STA333SML variant for “micro-less” applications enables designers to create digital amplifiers with the lowest cost of ownership.



Samples and production quantities of the STA333IS and STA333SML are available now as 5x6-bump 0.5mm-pitch Chip-Scale Package devices. Prices start from $1.00 for orders over 1,000 pieces.



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