TAS5121_07 Datasheet, PDF (1/18 Pages) Texas Instruments – DIGITAL AMPLIIFIER POWER STAGE

www.ti.com
TAS5121
SLES086A − NOVEMBER 2003 − REVISED MARCH 2004
TM
DIGITAL AMPLIFIER POWER STAGE
FEATURES
D 100-W RMS Power (BTL) Into 4 Ω With Less
Than 10% THD+N
D 80-W RMS Power (BTL) Into 4 Ω With Less
Than 0.2% THD+N
D 0.05% THD+N at 1 W Into 4 Ω
D Power Stage Efficiency Greater Than 90%
Into 4 Ω Load
D Self-Protecting Design
D 36-Pin PSOP3 Package
D 3.3-V Digital Interface
D EMI Compliant When Used With
Recommended System Design
APPLICATIONS
D DVD Receiver
D Home Theatre
D Mini/Micro Component Systems
D Internet Music Appliance
DESCRIPTION
The TAS5121 is a high-performance digital amplifier
power stage designed to drive a 4-Ω speaker up to 100 W.
The device incorporates PurePath Digital technology
and can be used with a TI audio PWM processor 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 TAS5121, safeguarding the
device and speakers against fault conditions that could
damage the system.
TOTAL HARMONIC DISTORTION + NOISE
vs
POWER
10
RL = 4 Ω
TC = 75°C
Gain = 3 dB
1
UNCLIPPED OUTPUT POWER
vs
H-BRIDGE VOLTAGE
90
80
70
4Ω
60
6Ω
50
40
0.1
30
8Ω
20
10
0.01
0.1
1
10
P − Power − W
0
100
0 4 8 12 16 20 24 28 32
PVDD_X − H-Bridge Voltage − V
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  2004, Texas Instruments Incorporated