TAS5715_10 Datasheet, PDF (1/74 Pages) Texas Instruments – 25-W DIGITAL AUDIO POWER AMPLIFIER WITH EQ AND DRC

TAS5715
www.ti.com
SLOS645 – AUGUST 2010
25-W DIGITAL AUDIO POWER AMPLIFIER WITH EQ AND DRC
Check for Samples: TAS5715
FEATURES
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• Audio Input/Output
– 25-W Into an 8-Ω Load From an 18-V Supply
– 50-W Support in PBTL Mode With 4-Ω Load
– Wide PVDD Range, From 8 V to 26 V
– Efficient Class-D Operation Eliminates
Need for Heatsinks
– Requires Only 3.3 V and PVDD
– One Serial Audio Input (Two Audio
Channels)
– I²C Address Selection via PIN (Chip Select)
– Supports 8-kHz to 48-kHz Sample Rate
(LJ/RJ/I²S)
– Headphone PWM Outputs
– Dedicated Pin for External
Headphone-Amplifier Shutdown
– Single-Filter PBTL Support
• Audio/PWM Processing
– Independent Channel Volume Controls With
24-dB to Mute
– Independent Headphone Volume
– Programmable Two-Band Dynamic Range
Control
– Up to Eight User-Programmable Biquads
per Channel
– Programmable Coefficients for DRC Filters
– DC Blocking Filters and PWM DC Detect
– CRC Checksum to Detect Biquad
Coefficient Corruption
• 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
A
• Benefits
– EQ: Speaker Equalization Improves Audio
Performance
– DRC: Automatic Gain Limiter. Can Be Used
As Power Limiter. Enables Speaker
Protection, Easy Listening
– Two-Band DRC: Set Two Different
Thresholds for Low- and High-Frequency
Content
– 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
– Single-Filter PBTL Support Reduces BOM
Cost
– Thgermal Dissipation, Improving System
Stability
DESCRIPTION
The TAS5715 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 TAS5715 is a slave-only device receiving all
clocks from external sources. The TAS5715 operates
with a PWM carrier between a 384-kHz switching rate
and a 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.
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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