TAS5132_15 Datasheet, PDF (1/27 Pages) Texas Instruments – STEREO DIGITAL AMPLIFIER POWER STAGE

TM
TAS5132
www.ti.com
STEREO DIGITAL AMPLIFIER POWER STAGE
SLES190 – DECEMBER 2006
FEATURES
• 2×20 W at 10% THD+N Into 8-Ω BTL
• 2×25 W at 10% THD+N Into 6-Ω BTL
• >100-dB SNR (A-Weighted)
• <0.1% THD+N at 1 W
• Thermally Enhanced Package:
– DDV (44-pin HTSSOP)
• High-Efficiency Power Stage (>90%) With
140-mΩ Output MOSFETs
• Power-On Reset for Protection on Power Up
Without Any Power-Supply Sequencing
• Integrated Self-Protection Circuits Including
Undervoltage, Overtemperature, Overload,
Short Circuit
• PWM Activity Detector to detect stopped PWM
inputs and protect the system
• Error Reporting
• EMI Compliant When Used With
Recommended System Design
• Intelligent Gate Drive
• Pin Compatible With the TAS5142DDV
APPLICATIONS
• Televisions
• Mini/Micro Audio Systems
• DVD Receivers
• Home Theaters
A low-cost, high-fidelity audio system can be built
using a TI chipset, comprising a modulator (e.g.,
TAS5086) and the TAS5132. This system only
requires a simple passive LC demodulation filter to
deliver high-quality, high-efficiency audio
amplification with proven EMI compliance. This
device requires two power supplies, at 12 V for
GVDD and VDD, and at 18 V for PVDD. The
TAS5132 does not require power-up sequencing due
to internal power-on reset. The efficiency of this
digital amplifier is greater than 90% into 8 Ω, which
enables the use of smaller power supplies and
heatsinks.
The TAS5132 has an innovative protection system
integrated on chip, safeguarding the device against a
wide range of fault conditions that could damage the
system. These safeguards are short-circuit
protection, overcurrent protection, undervoltage
protection, and overtemperature protection. The
TAS5132 has a new proprietary current-limiting
circuit that reduces the possibility of device shutdown
during high-level music transients.
BTL OUTPUT POWER vs SUPPLY VOLTAGE
30
T_C = 75°C
THD+N @ 10%
25
20
15
6Ω
DESCRIPTION
The TAS5132 is an integrated stereo digital amplifier
power stage with an advanced protection system.
The TAS5132 is capable of driving a 6-Ω bridge-tied
load (BTL) at up to 25 W per channel with low
integrated noise at the output, low THD+N
performance, and low idle power dissipation.
10
5
0
0
8Ω
5
10
15
PVDD − Supply Voltage − V
20
G002
PurePath Digital™
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
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.
PurePath Digital, PowerPAD are trademarks of Texas Instruments.
All other trademarks are the property of their respective owners.
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 © 2006, Texas Instruments Incorporated