TAS5612LA Datasheet, PDF (1/31 Pages) Texas Instruments – 125-W Stereo / 250-W Mono PurePath™ HD Digital-Input Class-D Power Stage

TAS5612LA
www.ti.com
SLAS847 – MAY 2012
125-W Stereo / 250-W Mono PurePath™ HD Digital-Input Class-D Power Stage
Check for Samples: TAS5612LA
FEATURES
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•234 PurePath™ HD Integrated Feedback Provides:
– 0.05% THD at 1 W into 4 Ω
– >65 dB PSRR (No Input Signal)
– >105 dB (A weighted) SNR
• Pre-Clipping Output for Control of a Class-G
Power Supply
• Reduced Heat Sink Size due to use of 60mΩ
Output MOSFET with >90% Efficiency at Full
Output Power
• Output Power at 10%THD+N
– 125 W / 4 Ω BTL Stereo Configuration
– 250 W / 2 Ω in PBTL Mono Configuration
• Output Power at 1%THD+N
– 105 W / 4 Ω BTL Stereo Configuration
– 55 W / 8 Ω BTL Stereo Configuration
• Click and Pop Free Startup
• Error Reporting Self-protected Design with
UVP, Over Temperature, and Short Circuit
Protection
• EMI Compliant when used with Recommended
System Design
• 44-Pin HTSSOP (DDV) Package for Reduced
Board Size
APPLICATIONS
• Blu-ray™/DVD Receivers
• High Power Sound Bars
• Powered Subwoofer and Active Speakers
• Mini Combo Systems
DESCRIPTION
The TAS5612LA is a feature optimized class-D power
amplifier based on the TAS5612A.
The TAS5612LA uses large MOSFETs for improved
power efficiency and a novel gate drive scheme for
reduced losses in idle and at low output signals
leading to reduced heat sink size.
The unique pre clipping output signal can be used to
control a Class-G power supply. This combined with
the low idle loss and high power efficiency of the
TAS5612LA leads to industry leading levels of
efficiency ensuring a super “green” system.
The TAS5612LA uses constant voltage gain. The
internally matched gain resistors ensure a high Power
Supply Rejection Ratio giving an output voltage only
dependent on the audio input voltage and free from
any power supply artifacts.
The high integration of the TAS5612LA makes the
amplifier easy to use and using TI’s reference
schematics and PCB layouts leads to fast design in
time. The TAS5612LA is available in the space
saving surface mount 44-pin HTSSOP package.
PowerPAD™ PurePath™ HD
DIGITAL
AUDIO
INPUT
TAS xxxx
Digital Audio
Processor
+3.3V
REG.
PurePath HD^TM
T_TA_A5S6_S30_5612LA
+12V
18V-32.5V
PurePath HD^TM
Class G Power Supply
Ref design
→ ^{105VAC 240VAC}
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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.
PowerPAD, PurePath are trademarks of Texas Instruments.
2
Blu-ray is a trademark of Blu-ray Disk Association (BDA).
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All other trademarks are the property of their respective owners.
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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 © 2012, Texas Instruments Incorporated