TAS5342LA Datasheet, PDF (1/27 Pages) Texas Instruments – 100 W STEREO DIGITAL AMPLIFIER POWER STAGE

TM
TAS5342LA
www.ti.com ........................................................................................................................................................................................... SLAS624 – NOVEMBER 2008
100 W STEREO DIGITAL AMPLIFIER POWER STAGE
FEATURES
1
•23 Total Power Output (Bridge Tied Load)
– 2 × 100 W at 10% THD+N Into 4 Ω
– 2 × 80 W at 10% THD+N Into 6 Ω
– 2 × 65 W at 10% THD+N Into 8 Ω
• Total Power Output (Single Ended)
– 4 × 40 W at 10% THD+N Into 3 Ω
– 4 × 30 W at 10% THD+N Into 4 Ω
• Total Power Output (Parallel Mode)
– 1 × 200 W at 10% THD+N Into 2 Ω
– 1 × 160 W at 10% THD+N Into 3 Ω
• >110 dB SNR (A-Weighted With TAS5518
Modulator)
• <0.1% THD+N (1 W, 1 kHz)
• Supports PWM Frame Rates of 192 kHz to
432 kHz
• Resistor-Programmable Current Limit
• Integrated Self-Protection Circuitry, Including:
– Under Voltage Protection
– Overtemperature Warning and Error
– Overload Protection
– Short-Circuit Protection
– PWM Activity Detector
• Standalone Protection Recovery
• Power-On Reset (POR) to Eliminate System
Power-Supply Sequencing
• High-Efficiency Power Stage (>90%) With
110-mΩ Output MOSFETs
• Thermally Enhanced Package 44-Pin HTSSOP
(DDV)
• Error Reporting, 3.3-V and 5.0-V Compliant
• EMI Compliant When Used With
Recommended System Design
APPLICATIONS
• Mini/Micro Audio System
• DVD Receiver
• Home Theater
DESCRIPTION
The TAS5342LA is a high-performance, integrated
stereo digital amplifier power stage designed to drive
a 4-Ω bridge-tied load (BTL) at up to 100 W per
channel with low harmonic distortion, low integrated
noise, and low idle current.
The TAS5342LA has a complete protection system
integrated on-chip, safeguarding the device against a
wide range of fault conditions that could damage the
system. These protection features are short-circuit
protection, over-current protection, under voltage
protection, over temperature protection, and a loss of
PWM signal (PWM activity detector).
A power-on-reset (POR) circuit is used to eliminate
power-supply sequencing that is required for most
power-stage designs.
BTL OUTPUT POWER
vs
SUPPLY VOLTAGE
120
110
T_C = 75°C,
THD+N @ 10%
100
90
4W
80
70
6W
60
50
8W
40
30
20
10
0
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32
PVDD - Supply Voltage - Vrms
PurePath Digital™
1
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.
2
All other trademarks are the property of their respective owners.
3
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