TAS5176_15 Datasheet, PDF (1/24 Pages) Texas Instruments – 6-Channel, 100-W, Digital-Amplifier Power Stage

TM
TAS5176
www.ti.com
6-Channel, 100-W, Digital-Amplifier Power Stage
SLES196 – JUNE 2007
FEATURES
• Total Output Power at 10% THD+N
– 5 × 15 W at 8 Ω + 1 × 25 W at 4 Ω
(Single-Ended)
– 2 x 30 W at 8 Ω (BTL)
– 1 x 40 W at 6 Ω (BTL)
• 105-dB SNR (A-Weighted), with TAS5086
Modulator
• < 0.05% THD+N at 1 W
• Power Stage Efficiency > 90% Into
Recommended Loads (SE)
• Integrated Self-Protection Circuits
– Undervoltage
– Overtemperature
– Overload
– Short Circuit
• Integrated Active-Bias Control to Avoid DC
Pop
• Footprint Compatible with the TAS5186A for
Scaleable Designs
• Thermally Enhanced 44-pin HTSSOP Package
with PowerPad located on the bottom of the
device
• EMI-Compliant When Used With
Recommended System Design
APPLICATIONS
• DVD Receiver
• Home Theater in a Box
• Televisions
DESCRIPTION
The TAS5176 is a high-performance, six-channel,
digital-amplifier power stage with an improved
protection system. The TAS5176 is capable of
driving a 8-Ω, single-ended load up to 15 W per each
front/satellite channel and a 4-Ω, single-ended
subwoofer greater than 25 W at 10% THD+N
performance.
Furthermore, the TAS5176 can drive three-channels
in BTL mode, with the same high-performance but
with a higher power level. In BTL mode, the
TAS5176 is capable of driving 8-Ω loads to greater
than 30 Watts at 10% THD+N performance.
A low-cost, high-fidelity audio system can be built
using a TI chipset comprising a modulator (e.g.,
TAS5086) and the TAS5176. This device does not
require power-up sequencing because of the internal
power-on reset.
The TAS5176 requires only simple passive
demodulation filters on its outputs to deliver
high-quality, high-efficiency audio amplification. The
efficiency of the TAS5176 is greater than 90% when
driving 8-Ω satellites and a 4-Ω subwoofer speaker.
The TAS5176 has an innovative protection system
integrated on-chip, safeguarding the device against a
wide range of fault conditions that could damage the
system. These safeguards are short-circuit
protection, overload protection, undervoltage
protection, and overtemperature protection. The
TAS5176 has a new proprietary current-limiting
circuit that reduces the possibility of device shutdown
during high-level music transients. A new
programmable overcurrent detector allows the use of
lower-cost inductors in the demodulation output filter.
OUTPUT POWER
vs
SUPPLY VOLTAGE
35
SE, 4 W Sub
THD = 10%
30
25
20
15
10
5
0
0
10
20
30
PVDD – Supply 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.
PowerPAD, PurePath Digital are trademarks of Texas Instruments.
All 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 the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2007, Texas Instruments Incorporated