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TAS5709APHP
20-W Stereo I2S Audio Amplifier with Speaker EQ and 2-Band DRC 48-HTQFP 0 to 85
1FEATURES
DESCRIPTION
TAS5709, TAS5709A
www.ti.com..................................................................................................................................... SLOS599A–NOVEMBER 2008–REVISED SEPTEMBER 2009
20-W STEREO DIGITAL AUDIO POWER AMPLIFIER WITH EQ AND DRC Audio Input/Output – DRC: Dynamic Range Compression. Can Used As Power Limiter. Enables– 20-W Intoan 8-Ω Load Froman 18-V Supply
Speaker Protection, Easy Listening,– Wide PVDD Range, From8Vto24V Night-Mode Listening– Efficient Class-D Operation Eliminates – Two-Band DRC: Sets Two DifferentNeed for Heatsinks Thresholds for Low- and High-Frequency– Requires Only 3.3V and PVDD Content One Serial Audio Input (Two Audio – Autobank Switching: Preload CoefficientsChannels) for Different Sample Rates. No Needto Supports 8-kHzto 48-kHz Sample Rate Write New Coefficientsto the Part When
(LJ/RJ/I2S) Sample Rate Changes Audio/PWM Processing – Autodetect: Automatically Detects Independent Channel Volume Controls With Sample-Rate Changes. No Need for dBto Mute External Microprocessor Intervention Soft Mute (50% Duty Cycle) Programmable 2-Band Dynamic Range
Control The TAS5709isa 20-W, efficient, digital audio-power
amplifier for driving stereo bridge-tied speakers. One
– 22 Programmable Biquads for Speaker EQ serial data input allows processing of up to two
and Other Audio-Processing Features discrete audio channels and seamless integrationto
– Programmable Coefficients for DRC Filters most digital-audio processors and MPEG decoders.
Programmable Input and Output Mixers The device acceptsa wide rangeof input data and
data rates.A fully programmable data path routes
– DC Blocking Filters these channelsto the internal speaker drivers.
– Support for 3D EffectsThe TAS5709isa slave-only device receiving all
– Pseudo Bass Support clocks from external sources. The TAS5709 operates•
General Features witha PWM carrier betweena 384-kHz switching rate
Serial Control Interface Operational Without anda 352-KHz switching rate, depending on the input
sample rate. Oversampling combined with a
MCLKfourth-order noise shaper providesa flat noise floor
– Factory-Trimmed Internal Oscillator for and excellent dynamic range from 20 Hzto20 kHz.
Automatic Rate DetectionThe TAS5709A is identical in function to the
– Surface Mount, 48-Pin, 7-mm× 7-mm TAS5709, but hasa uniqueI2C device address. The
HTQFP Package addressof the TAS5709is 0x36. The addressof the
– Thermal and Short-Circuit Protection TAS5709Ais 0x3A.•
Benefits EQ: Speaker Equalization Improves Audio
Performance