TAS5611A_15 Datasheet, PDF (1/28 Pages) Texas Instruments – STEREO/250W MONO PurePath™ HD ANALOG-INPUT POWER STAGE

TAS5611A
www.ti.com
SLAS709B – JUNE 2010 – REVISED JULY 2011
125W STEREO/250W MONO PurePath™ HD ANALOG-INPUT POWER STAGE
Check for Samples: TAS5611A
FEATURES
1
•23 PurePath™ HD Enabled Integrated Feedback
Provides:
– Signal Bandwidth up to 80kHz for High
Frequency Content From HD Sources
– Ultralow 0.03% THD at 1W into 4Ω
– Flat THD at all Frequencies for Natural
Sound
– 80dB PSRR (BTL, No Input Signal)
– >100dB (A weighted) SNR
– Click and Pop Free Startup
• Pin compatible with TAS5630, TAS5615 and
TAS5613
• Multiple Configurations Possible on the Same
PCB With Stuffing Options:
– Mono Parallel Bridge Tied Load (PBTL)
– Stereo Bridge Tied Load (BTL)
– 2.1 Single Ended Stereo Pair and Bridge
Tied Load Subwoofer
• Total Output Power at 10%THD+N
– 250W in Mono PBTL Configuration into 2Ω
– 125W per Channel in Stereo BTL
Configuration into 4Ω
• Total Output Power in BTL configuration at
1%THD+N
– 130W Stereo into 3Ω
– 105W Stereo into 4Ω
– 70W Stereo into 6Ω
– 55W Stereo into 8Ω
• >90% Efficient Power Stage With 60-mΩ
Output MOSFETs
• Self-Protection Design (Including
Undervoltage, Overtemperature, Clipping, and
Short-Circuit Protection) With Error Reporting
• EMI Compliant When Used With
Recommended System Design
• Thermally Enhanced Package Options:
– PHD (64-Pin QFP)
APPLICATIONS
• Home Theater Systems
• AV Receivers
• DVD/Blu-ray Receivers
• Mini Combo System
• Active Speakers and Subwoofers
DESCRIPTION
The TAS5611A is a high performance analog input
Class D amplifier with integrated closed loop
feedback technology (known as PurePath™ HD) with
the ability to drive up to 125W ⁽¹⁾ Stereo into 4 to 8 Ω
Speakers from a single 32.5V supply.
PurePath™ HD technology enables traditional
AB-Amplifier performance (<0.03% THD) levels while
providing the power efficiency of traditional class D
amplifiers.
Unlike traditional Class D amplifiers, the distortion
curve only increases once the output levels move into
clipping. PurePath™ HD Power PAD™
PurePath™ HD technology enables lower idle losses
making the device even more efficient.
TOTAL HARMONIC DISTORTION+NOISE
VS
OUTPUT POWER
10
4Ohm (6kHz)
4Ohm (1kHz)
1
0,1
0,01
TC = 75 C
CONFIG = BTL
0,001
0,01
1
100
P_O - Output Power - W
(1) Achievable output power levels are dependent on the thermal
configuration of the target application. A high performance
thermal interface material between the package exposed
heatslug and the heat sink should be used to achieve high
output power levels.
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, Power PAD are trademarks of Texas Instruments.
2
All other trademarks are the property of their respective owners.
3
UNLESS OTHERWISE NOTED this document contains
PRODUCTION DATA information 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 © 2010–2011, Texas Instruments Incorporated