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TAS5701 Datasheet, PDF (1/26 Pages) Texas Instruments – 20-W STEREO DIGITAL AUDIO POWER AMPLIFIER
TAS5701
www.ti.com ...................................................................................................................................................................................................... SLOS559 – JUNE 2008
20-W STEREO DIGITAL AUDIO POWER AMPLIFIER
FEATURES
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• Audio Input/Output
– 20-W Into an 8-Ω Load From an 18-V Supply
– Wide PVDD Range (0 V to 21 V)
– Efficient Class-D Operation Eliminates
Need for Heat Sinks
– Two Serial Audio Inputs (3 Audio channels)
– Supports 32-kHz to 192-kHz Sample Rates
(LJ/RJ/I2S)
– Line-Level Subwoofer PWM Outputs
• Audio/PWM Processing
– BD (Filter-free) Modulation Supporting
Bridge-Tied Loads ONLY
– 4-Step Volume Control (0 dB, 6 dB, 12 dB,
18 dB)
– All Channels Share Same Control
– Soft Mute (50% Duty Cycle)
– DC Blocking Filters
– Fixed Maximum Modulation Limit At 97.7%
– ≥100-dB SNR – Measured at Maximum
Output With THD+N = 1%, 1 kHz,
A-Weighted Noise, Gain = 0 dB
– THD < 0.1% at 1/2 Rated Power
• General Features
– 5-V Tolerant Inputs (See pin list for details
on which inputs are 5-V tolerant)
– Shutdown Mode for Low Power
Consumption
– Thermal and Short-Circuit Protection
– Autodetect: Automatically Detect
Sample-Rate Changes – No Need for
External Microprocessor Intervention
DESCRIPTION
The TAS5701 is a 20-W efficient, digital audio power
amplifier for driving stereo bridge-tied speakers. Two
serial data inputs support up to 3 discrete audio
channels. The SDIN1 input is routed to the internal
left and right outputs. The SDIN2 input is dedicated to
the SUB_PWM± outputs.
The TAS5701 is a clock slave-only device receiving
clocks from external sources. The TAS5701 operates
at a 384-kHz switching rate for 32-, 48-, 96-, and
192-kHz data and 352.8-kHz switching rate
44.1-,88.2-, and 176.4-kHz data. The 8×
oversampling combined with the 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 © 2008, Texas Instruments Incorporated