TAS5111A Datasheet, PDF (1/17 Pages) Texas Instruments – DIGITAL AMPLIIFIER POWER STAGE

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DIGITAL AMPLIFIER POWER STAGE
TAS5111A
SLES111 − AUGUST 2005
TM
FEATURES
D 70-W RMS Power (BTL) Into 4 Ω With Less
Than 0.2% THD+N
D 95-dB Dynamic Range (TDAA System With
TAS5026)
D Power Efficiency Greater Than 90% Into 4-Ω
and 8-Ω Loads
− Smaller Power Supplies
D Self-Protecting Design With Autorecovery
D 32-Pin TSSOP (DAD) PowerPAD Package
D 3.3-V Digital Interface
D EMI-Compliant When Used With
Recommended System Design
APPLICATIONS
D DVD Receiver
THD + NOISE vs OUTPUT POWER
1
RL = 4 Ω
TC = 75°C
0.1
D Home Theatre
D Mini/Micro Component Systems
D Internet Music Appliance
DESCRIPTION
The TAS5111A is a high-performance digital amplifier
power stage designed to drive a 4-Ω speaker up to 70 W
with 0.2% distortion plus noise. The device incorporates
TI’s PurePath Digital technology and is used with a
digital audio PWM processor (TAS50XX) and a simple
passive demodulation filter to deliver high-quality,
high-efficiency digital audio amplification.
The efficiency of this digital amplifier can be greater than
90%, depending on the system design. Overcurrent
protection, overtemperature protection, and undervoltage
protection are built into the TAS5111A, safeguarding the
device and speakers against fault conditions that could
damage the system.
THD + NOISE vs FREQUENCY
1
RL = 4 Ω
TC = 75°C
0.1
PO = 70 W
PO = 1 W
PO = 10 W
0.01
0.01
100m
1
10
PO − Output Power − W
0.001
100
20
100
1k
10k 20k
f − Frequency − Hz
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 and PowerPAD are trademarks of Texas Instruments. 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 Texas Instruments standard warranty.
Production processing does not necessarily include testing of all parameters.
Copyright  2005, Texas Instruments Incorporated