STA333IS Datasheet, PDF (1/43 Pages) STMicroelectronics – 100 dB SNR and dynamic range

STA333IS
Sound Terminal^®
2-channel high-efficiency digital audio system
Datasheet - production data
CSP 5x6 array
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 * f_S input mode support
Applications
• LCDs
• DVDs
• Cradles
• Digital speakers
• Wireless-speaker cradles
Description
The 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 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 FFX^™ processing 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.
Table 1. Device summary
Order code
Package
Packaging
STA333IS
CSP 5x6 array Tape and reel
April 2013
This is information on a product in full production.
DocID022855 Rev 3
1/43
www.st.com
43