TAS5601 Datasheet, PDF (1/26 Pages) Texas Instruments – 20W STEREO (BTL) DIGITAL AMPLIFIER POWER STAGE

TAS5601
www.ti.com
SLAS585 – FEBRUARY 2008
20W STEREO (BTL) DIGITAL AMPLIFIER POWER STAGE
FEATURES
1
•2 Supports Multiple Output Configurations
– 2×20-W into a 8-Ω BTL Load at 18 V
– 4×10-W into a 4-Ω SE Load at 18 V
– 2×10W (SE) + 1×20W (BTL) at 18 V
• Thermally Enhanced Package
– DCA (56-pin HTTSOP)
• Wide Voltage Range: 10V–26V
– No Separate Supply Required for Gate
Drive
• Efficient Class-D Operation Eliminates Need
for Heat Sinks
• Closed Loop Power Stage Architecture
– Improved PSRR Reduces Power Supply
Performance Requirements
– High Damping Factor Provides for Tighter,
More Accurate Sound With Improved Bass
Response
– Constant Output Power Over Variation in
Supply Voltage
• Differential Inputs
• Integrated Self-Protection Circuits Including
Overvoltage, Undervoltage, Overtemperature,
and Short Circuit With Error Reporting
APPLICATIONS
• Flat-Panel, Rear-Projection, and CRT TV
DESCRIPTION
The TAS5601 is a 20-W (per channel) efficient,
stereo digital amplifier power stage for driving 4
single-ended speakers, 2 bridge-tied speakers, or
combination of single and bridge-tied loads. The
TAS5601 can drive a speaker with an impedance as
low as 4Ω. The high efficiency, >90% into 8-Ω loads,
of the TAS5601 eliminates the need for an external
heat sink.
A simple interface to a digital audio PWM processor
is shown below. The TAS5601 is fully protected
against faults with short-circuit protection and thermal
protection as well as overvoltage and undervoltage
protection. Faults are reported back to the processor
to prevent devices from being damaged during
overload conditions.
SIMPLIFIED APPLICATION CIRCUIT
Digital PWM Processor
3 - 4.2 V
DVDD
DGND
OUTA_P
I2S
OUTA_N
OUTB_P
OUTB_N
TAS5602
DVDD
DGND
PWM_AP
PWM_AN
PWM_BP
PWM_BN
10 - 26 V
PVCC
AVCC
BSA
OUTA
OUTB
LC
Filter
BSB
Control
Inputs
OUTC_P
OUTC_N
OUTD_P
OUTD_N
VALID
ERROR
GPIO
PWM_CP
PWM_CN
PWM_DP
PWM_DN
BSC
OUTC
OUTD
BSD
RESET
VCLAMP_AB
VCLAMP_CD
FAULT
BYPASS
THERM_WARN
SE/BLT
AGND
PGND
LC
Filter
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.
System Two, Audio Precision are trademarks of Audio Precision, Inc.
2
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