0,1
1
10
ta
l
H
a
rm
o
n
ic
D
is
to
rt
io
n
-
%
4Ohm (6kHz)
4Ohm(1kHz)
TOTAL HARMONIC DISTORTION+NOISE
VS
OUTPUT POWER
0,001
0,01
0,1
1
10
0,01
1
100
T
H
D
+
N
-
T
o
ta
l
H
a
rm
o
n
ic
D
is
to
rt
io
n
-
%
P
O - Output Power - W
4Ohm (6kHz)
4Ohm(1kHz)
TOTAL HARMONIC DISTORTION+NOISE
VS
OUTPUT POWER
TC = 75 C
CONFIG = BTL
www.ti.com
SLAS709 – JUNE 2010
125W STEREO/250W MONO PurePath HD ANALOG-INPUT POWER STAGE
1
FEATURES
APPLICATIONS
Home Theater Systems
23
PurePath HD Enabled Integrated Feedback
Provides:
AV Receivers
DVD/Blu-ray Receivers
–
Signal Bandwidth up to 80kHz for High
Frequency Content From HD Sources
Mini Combo System
Active Speakers and Subwoofers
–
Ultralow 0.03% THD at 1W into 4
–
Flat THD at all Frequencies for Natural
DESCRIPTION
Sound
–
80dB PSRR (BTL, No Input Signal)
The TAS5611A is a high performance analog input
Class
D
amplifier
with
integrated
closed
loop
–
>100dB (A weighted) SNR
feedback technology (known as PurePath HD) with
–
Click and Pop Free Startup
the ability to drive up to 125W (1) Stereo into 4 to 8
Pin compatible with TAS5630, TAS5615 and
Speakers from a single 32.5V supply.
TAS5613
PurePath
HD
technology
enables
traditional
Multiple Configurations Possible on the Same
AB-Amplifier performance (<0.03% THD) levels while
PCB With Stuffing Options:
providing the power efficiency of traditional class D
amplifiers.
–
Mono Parallel Bridge Tied Load (PBTL)
–
Stereo Bridge Tied Load (BTL)
Unlike traditional Class D amplifiers, the distortion
curve only increases once the output levels move into
–
2.1 Single Ended Stereo Pair and Bridge
clipping. PurePath HD Power PAD
Tied Load Subwoofer
PurePath HD technology enables lower idle losses
Total Output Power at 10%THD+N
making the device even more efficient.
–
250W in Mono PBTL Configuration into 2
Ω
–
125W per Channel in Stereo BTL
Configuration into 4
Ω
Total Output Power in BTL configuration at
1%THD+N
–
130W Stereo into 3
Ω
–
105W Stereo into 4
Ω
–
70W Stereo into 6
Ω
–
55W Stereo into 8
Ω
>90% Efficient Power Stage With 60-m
Output MOSFETs
Self-Protection Design (Including
Undervoltage, Overtemperature, Clipping, and
Short-Circuit Protection) With Error Reporting
EMI Compliant When Used With
Recommended System Design
Two Thermally Enhanced Package Options:
(1)
Achievable output power levels are dependent on the thermal
–
PHD (64-Pin QFP)
configuration of the target application. A high performance
–
DKD (44-Pin PSOP3)
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.
2
PurePath, Power PAD are trademarks of Texas Instruments.
3
All other trademarks are the property of their respective owners.
UNLESS
OTHERWISE
NOTED
this
document
contains
Copyright 2010, Texas Instruments Incorporated
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.