TAS5261_15 Datasheet, PDF (1/26 Pages) Texas Instruments – 315-W Mono BTL Digital Amplifier Power Stage

TM
TAS5261
www.ti.com
315-W Mono BTL Digital Amplifier Power Stage
SLES188 – AUGUST 2006
FEATURES
• Total Output Power
– 125 W Into 8 Ω at <0.09% THD+N
– 220 W Into 6 Ω at 10% THD+N
– 315 W Into 4 Ω at 10% THD+N
• 110-dB SNR (A-Weighted with TAS5518
modulator)
• Supports Pulse-Width Modulation (PWM)
Frame Rates of 192 kHz to 384 kHz
• Resistor-Programmable Current Limit
• Integrated Self-Protection Circuit Including:
– Under Voltage Protection
– Over Temperature Warning and Error
– Over Load Protection
– Short Circuit (OC) Protection
– PWM Activity Dectector
• Power-On Reset (POR) to Eliminate System
Power-Supply Sequencing
• Thermally-Enhanced Package DKD (36-pin
PSOP3)
• EMI Compliant When Used With
Recommended System Design
• Error Reporting 3.3-V and 5-V Compliant
APPLICATIONS
• AV Receivers
• DVD Receivers
• Mini/Micro Component Systems
• Home Theater Systems
DESCRIPTION
The TAS5261 is a high-performance, integrated
mono digital amplifier power stage designed to drive
4-Ω to 8-Ω speakers with low harmonic distortion.
This system requires only a simple, passive
demodulation filter to deliver high-quality,
high-efficiency audio amplification.
The TAS5261 has complete protection circuitry
integrated on chip, safeguarding the device and
speakers against fault conditions that could damage
the system. These protection features are
short-circuit protection, overcurrent protection,
undervoltage protection, and a loss of pulse-width
modulation (PWM) input signal (PWM Activity
Detector).
A power-on reset (POR) circuit is used to eliminate
power-supply sequencing that is normally required
for most H-bridge designs.
OUTPUT POWER
vs
PVDD_x SUPPLY VOLTAGE
330
300
T_C = 75°C
THD+N at 10%
270
240
210
180
6Ω
150
4Ω
120
90
60
30
8Ω
0
0 5 10 15 20 25 30 35 40 45 50
PVDD Supply Voltage − V
G001
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 is a trademark of Texas Instruments.
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 © 2006, Texas Instruments Incorporated