TAS5727_14 Datasheet, PDF (1/62 Pages) Texas Instruments – 25-W DIGITAL AUDIO POWER AMPLIFIER WITH EQ AND DRC

TAS5727
www.ti.com
SLOS670 – NOVEMBER 2010
25-W DIGITAL AUDIO POWER AMPLIFIER WITH EQ AND DRC
Check for Samples: TAS5727
FEATURES
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• Audio Input/Output
– 25 W Into an 8-Ω Load From a 20-V Supply
– Wide PVDD Range, From 8 V to 26 V
– Supports BTL Configuration With 4-Ω Load
– Efficient Class-D Operation Eliminates
Need for Heatsinks
– One Serial Audio Input (Two Audio
Channels)
– I²C Address Selection Pin (Chip Select)
– Single Output Filter PBTL Support
– Supports 44.1-kHz to 48-kHz Sample Rate
(LJ/RJ/I²S)
• Audio/PWM Processing
– Independent Channel Volume Controls With
Gain of 24 dB to Mute With 0.125-dB
Resolution Steps
– Programmable Two-Band Dynamic-Range
Control
– 18 Programmable Biquads for Speaker EQ
and Other Audio-Processing Features
– Programmable Coefficients for DRC Filters
– DC Blocking Filters
• General Features
– I²C Serial Control Interface Operational
Without MCLK
– Requires Only 3.3 V and PVDD
– No External Oscillator: Internal Oscillator
for Automatic Rate Detection
– Surface-Mount, 48-Pin HTQFP Package
– Thermal and Short-Circuit Protection
– 106-dB SNR, A-Weighted
– AD, BD, and Ternary Modulation
– Up to 90% Efficient
– PWM Level Meter to Measure the Digital
Power Profile
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• Benefits
– EQ: Speaker Equalization Improves Audio
Performance
– Two-Band DRC: Dynamic Range
Compression. Can Be Used As Power
Limiter. Enables Speaker Protection, Easy
Listening, Night-Mode Listening
– Autodetect: Automatically Detects
Sample-Rate Changes. No Need for
External Microprocessor Intervention
APPLICATIONS
• LCD TV, LED TV, Soundbar
DESCRIPTION
The TAS5727 is a 25-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 TAS5727 is a slave-only device receiving all
clocks from external sources. The TAS5727 operates
with a PWM carrier between a 384-kHz switching rate
and a 288-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.
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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.
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 © 2010, Texas Instruments Incorporated