Datasheet

TAS5715
www.ti.com SLOS645 –AUGUST 2010
25-W DIGITAL AUDIO POWER AMPLIFIER WITH EQ AND DRC
Check for Samples: TAS5715
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FEATURES
• Audio Input/Output A
– 25-W Into an 8-Ω Load From an 18-V Supply • Benefits
– 50-W Support in PBTL Mode With 4-Ω Load – EQ: Speaker Equalization Improves Audio
Performance
– Wide PVDD Range, From 8 V to 26 V
– DRC: Automatic Gain Limiter. Can Be Used
– Efficient Class-D Operation Eliminates
As Power Limiter. Enables Speaker
Need for Heatsinks
Protection, Easy Listening
– Requires Only 3.3 V and PVDD
– Two-Band DRC: Set Two Different
– One Serial Audio Input (Two Audio
Thresholds for Low- and High-Frequency
Channels)
Content
– I
2
C Address Selection via PIN (Chip Select)
– Autobank Switching: Preload Coefficients
– Supports 8-kHz to 48-kHz Sample Rate
for Different Sample Rates. No Need to
(LJ/RJ/I
2
S)
Write New Coefficients to the Part When
– Headphone PWM Outputs
Sample Rate Changes
– Dedicated Pin for External
– Autodetect: Automatically Detects
Headphone-Amplifier Shutdown
Sample-Rate Changes. No Need for
– Single-Filter PBTL Support External Microprocessor Intervention
• Audio/PWM Processing – Single-Filter PBTL Support Reduces BOM
Cost
– Independent Channel Volume Controls With
24-dB to Mute – Thgermal Dissipation, Improving System
Stability
– Independent Headphone Volume
– Programmable Two-Band Dynamic Range
DESCRIPTION
Control
The TAS5715 is a 25-W, efficient, digital audio-power
– Up to Eight User-Programmable Biquads
amplifier for driving stereo bridge-tied speakers. One
per Channel
serial data input allows processing of up to two
– Programmable Coefficients for DRC Filters
discrete audio channels and seamless integration to
– DC Blocking Filters and PWM DC Detect
most digital audio processors and MPEG decoders.
The device accepts a wide range of input data and
– CRC Checksum to Detect Biquad
data rates. A fully programmable data path routes
Coefficient Corruption
these channels to the internal speaker drivers.
• General Features
The TAS5715 is a slave-only device receiving all
– Serial Control Interface Operational Without
clocks from external sources. The TAS5715 operates
MCLK
with a PWM carrier between a 384-kHz switching rate
– Factory-Trimmed Internal Oscillator for
and a 352-KHz switching rate, depending on the input
Automatic Rate Detection
sample rate. Oversampling combined with a
fourth-order noise shaper provides a flat noise floor
– Surface Mount, 48-Pin, 7-mm × 7-mm
and excellent dynamic range from 20 Hz to 20 kHz.
HTQFP Package
– Thermal and Short-Circuit Protection
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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.
Copyright © 2010, 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.