sta381bw STMicroelectronics, sta381bw Datasheet

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sta381bw

Manufacturer Part Number

sta381bw

Description

Sound Terminal 2.1-channel High-efficiency Digital Audio System

Manufacturer

STMicroelectronics

Datasheet

1.STA381BW.pdf (168 pages)

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Company:

Meier Automation Equipment Co., Limited

Meier Automation Equipment Co., Limited

Part Number:

STA381BW

Manufacturer:

ST

Quantity:

20 000

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BOSTOCK HK LIMITED

BOSTOCK HK LIMITED

Part Number:

sta381bwS

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Company:

Meier Automation Equipment Co., Limited

Meier Automation Equipment Co., Limited

Part Number:

sta381bwS

Manufacturer:

ST

Quantity:

20 000

Company:

BOSTOCK HK LIMITED

BOSTOCK HK LIMITED

Part Number:

sta381bwSTR

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ST

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Allchip Electronic(HK) Limited

Allchip Electronic(HK) Limited

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sta381bwSTR

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ST

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Features

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June 2011

This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to

change without notice.

Wide-range supply voltage

– 4.5 V to 26 V (operating range)

– 30 V (absolute maximum rating)

I

Full IC protection embedding:

– Manufacturing short-circuit protection (out

– Thermal protection

– Overcurrent protection

– Undervoltage protection

1 Vrms stereo analog input

I

with internal sampling frequency converter for

fixed processing frequency

Three output power stage configurations

– 2.0 mode, L/R full bridges

– 2.1 mode, L/R two half-bridges, subwoofer

– 2.1 mode, L/R full bridges, PWM output for

Driving load capabilities

– 2 x 20 W into 8 Ω ternary modulation

– 2 x 9 W into 4 Ω + 1 x 20 W into 8 Ω

FFX

Fixed output PWM frequency at any input

sampling frequency

Embedded RMS meter for measuring real-time

loudness

Two analog outputs:

– Selectable headphone / line out driver with

– Auxiliary F3X

2

2

C control with selectable device address

S interface, sampling rate 32 kHz ~ 192 kHz,

vs. gnd, out vs. vcc, out vs. out)

full bridge

external subwoofer amplifier

adjustable gain via external resistors

driver

TM

100 dB dynamic range

TM

analog output for external

2.1-channel high-efficiency digital audio system

Doc ID 018835 Rev 2

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Table 1.

STA381BWTR

Order code

STA381BW

Headphone:

– Embedded negative charge pump

– Full capless output configuration

– Driving load capabilities: 40 mW into 32 Ω

Line out:

– 2 Vrms line output capability

Up to 12 user-programmable biquads with

noise-shaping technology

Direct access to coefficients through I

shadowing mechanism

Fixed (88.2 kHz / 96 kHz) internal processing

sampling rate

Two independent DRCs configurable as a

dual-band anticlipper or independent

limiters/compressors (B

Digital gain/att +48 dB to -80 dB with

0.125 dB/step resolution

Independent (fade in, fade out) soft volume

update with programmable rate 48 ~ 1.5 dB/ms

Bass/treble tones control

Audio presets:15 crossover filters, 5

anticlipping modes, nighttime listening mode

STSpeakerSafe

– Pre and post processing DC blocking filters

– Checksum engine for filter coefficients

– PWM fault self-diagnosis

STCompressor

Device summary

VQFN48 (7 x 7 mm)

TM

TM

Package

VQFN48

VQFN48

dual-band DRC

protection circuitry:

Sound Terminal

STA381BW

2

DRC)

Tape and Reel

Preliminary data

Packing

Tray

2

www.st.com

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