TAS5711_14 Datasheet, PDF (1/67 Pages) Texas Instruments – 20-W DIGITAL AUDIO-POWER AMPLIFIER WITH EQ, DRC, AND 2.1 MODE

TAS5711
www.ti.com
SLOS600A – DECEMBER 2009 – REVISED AUGUST 2010
20-W DIGITAL AUDIO-POWER AMPLIFIER WITH EQ, DRC, AND 2.1 MODE
Check for Samples: TAS5711
FEATURES
1
•2 Audio Input/Output
– 20-W Into an 8-Ω Load From an 18-V Supply
– Wide PVDD Range, From 8 V to 26 V
– Efficient Class-D Operation Eliminates
Need for Heatsinks
– One Serial Audio Input (Two Audio
Channels)
– 2.1 Mode (2 SE + 1 BTL)
– 2.0 Mode (2 BTL)
– Single-Filter PBTL Mode Support
– I²C Address Selection Pin (Chip Select)
– Supports 8-kHz to 48-kHz Sample Rate
(LJ/RJ/I²S)
• Audio/PWM Processing
– Independent Channel Volume Controls With
24-dB to Mute
– Separate Dynamic Range Control for
Satellite and Subchannels
– 21 Programmable Biquads for Speaker EQ
and Other Audio Processing Features
– Programmable Coefficients for DRC Filters
– DC Blocking Filters
– Support for 3D Effects
• General Features
– Serial Control Interface Operational Without
MCLK
– Factory-Trimmed Internal Oscillator for
Automatic Rate Detection
– Surface Mount, 48-Pin, 7-mm × 7-mm
HTQFP Package
– Thermal and Short-Circuit Protection
– Support for AD or BD Mode
• Benefits
– Up to 90% Efficient
– AD and BD Filter Mode Support
– SNR: 106 dB, A-Weighted
– EQ: Speaker Equalization Improves Audio
Performance
– DRC: Dynamic Range Compression. Can
Be Used As Power Limiter. Enables
Speaker Protection, Easy Listening,
Night-Mode Listening.
– Separate DRC for Satellite and
Subchannels
– Autobank Switching: Preload Coefficients
for Different Sample Rates. No Need to
Write new Coefficients to the Part When
Sample Rate Changes.
– Autodetect: Automatically Detects
Sample-Rate Changes. No Need for
External Microprocessor Intervention
• Requires Only 3.3 V and PVDD
APPLICATIONS
• Television
• iPod™ Dock
• Sound Bar
DESCRIPTION
The TAS5711 is a 20-W, efficient, digital audio power
amplifier for driving stereo bridge-tied speakers. One
serial data input allows processing of up to two
discrete audio channels and seamless integration to
most digital audio processors and MPEG decoders.
The device accepts a wide range of input data and
data rates. A fully programmable data path routes
these channels to the internal speaker drivers.
The TAS5711 is an I²S slave-only device receiving all
clocks from external sources. The TAS5711 operates
with a PWM carrier between 384-kHz switching rate
and 352-KHz switching rate depending on the input
sample rate. Oversampling combined with a
fourth-order noise shaper provides a flat noise floor
and excellent dynamic range from 20 Hz to 20 kHz.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
iPod is a trademark of Apple Inc.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2009–2010, Texas Instruments Incorporated