TAS5707, TAS5707A
www.ti.com
SLOS556B –NOVEMBER 2008–REVISED NOVEMBER 2009
20-W STEREO DIGITAL AUDIO POWER AMPLIFIER WITH EQ AND DRC
Check for Samples: TAS5707 TAS5707A
1
FEATURES
23
• Audio Input/Output
Night-Mode Listening
– 20-W Into an 8-Ω Load From an 18-V Supply – Autobank Switching: Preload Coefficients
for Different Sample Rates. No Need to
– Wide PVDD Range, From 8 V to 26 V
Write New Coefficients to the Part When
– Efficient Class-D Operation Eliminates
Sample Rate Changes.
Need for Heatsinks
– Autodetect: Automatically Detects
– Requires Only 3.3 V and PVDD
Sample-Rate Changes. No Need for
– One Serial Audio Input (Two Audio
External Microprocessor Intervention
Channels)
– Supports 8-kHz to 48-kHz Sample Rate
APPLICATIONS
(LJ/RJ/I
2
S)
• Television
• Audio/PWM Processing
• iPod™ Dock
– Independent Channel Volume Controls With
• Sound Bar
24 dB to Mute
DESCRIPTION
– Soft Mute (50% Duty Cycle)
– Programmable Dynamic Range Control
The TAS5707 is a 20-W, efficient, digital-audio power
amplifier for driving stereo bridge-tied speakers. One
– 14 Programmable Biquads for Speaker EQ
serial data input allows processing of up to two
and Other Audio Processing Features
discrete audio channels and seamless integration to
– Programmable Coefficients for DRC Filters
most digital audio processors and MPEG decoders.
– DC Blocking Filters
The device accepts a wide range of input data and
data rates. A fully programmable data path routes
• General Features
these channels to the internal speaker drivers.
– Serial Control Interface Operational Without
MCLK The TAS5707 is a slave-only device receiving all
clocks from external sources. The TAS5707 operates
– Factory-Trimmed Internal Oscillator for
with a PWM carrier between a 384-kHz switching rate
Automatic Rate Detection
and 352-KHz switching rate, depending on the input
– Surface Mount, 48-PIN, 7-mm × 7-mm
sample rate. Oversampling combined with a
HTQFP Package
fourth-order noise shaper provides a flat noise floor
and excellent dynamic range from 20 Hz to 20 kHz..
– Thermal and Short-Circuit Protection
• Benefits
The TAS5707A is identical in function to the HTQFP
packaged TAS5707, but has a unique I
2
C device
– EQ: Speaker Equalization Improves Audio
address. The address of the TAS5707 is 0x36. The
Performance
address of the TAS5707A is 0x3A.
– DRC: Dynamic Range Compression. Can
Be Used As Power Limiter. Enables
Speaker Protection, Easy Listening,
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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.
2iPod is a trademark of Apple Inc.
3All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2008–2009, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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