TAS5102 Datasheet, PDF (1/25 Pages) Texas Instruments – 20-W/15-W STEREO DIGITAL AMPLIFIER POWER STAGE

TAS5102
TAS5103
www.ti.com .............................................................................................................................................................. SLLS801A – JUNE 2008 – REVISED JUNE 2008
20-W/15-W STEREO DIGITAL AMPLIFIER POWER STAGE
FEATURES
1
•2 2×20 W at 10% THD+N Into 8-Ω BTL at 18 V
(With Heatsink for TAS5102)
• 2×15 W at 10% THD+N Into 8-Ω BTL at 15.5 V
for TAS5103
• 2×10 W at 10% THD+N Into 8-Ω BTL at 13 V
• >100-dB SNR (A-Weighted)
• <0.1% THD+N at 1 W
• Thermally Enhanced Package: 32-pin HTSSOP
– DAD (TAS5102) Pad Up
– DAP (TAS5103) Pad Down
• High-Efficiency Power Stage (>90%) With
180-mΩ Output MOSFETs
• Wide PVDD Range from 8V to 23V
• Power-On Reset for Protection on Power Up
Without Any Power-Supply Sequencing
• Integrated Self-Protection Circuits Including
Undervoltage, Overtemperature, Overcurrent,
Short Circuit
• Built-In Regulator for Gate Drive Supply
• Error Reporting
• EMI Compliant When Used With
Recommended System Design
APPLICATIONS
• Televisions
• Mini/Micro Audio Systems
• DVD Receivers
• Home Theaters
DESCRIPTION
The TAS5102/TAS5103 are integrated stereo digital
amplifier power stages with an advanced protection
system. The TAS5102/TAS5103 are capable of
driving an 8-Ω bridge-tied load (BTL) at up to 20
W/15 W per channel with low integrated noise at the
output, low THD+N performance, and low idle power
dissipation.
A low-cost, high-fidelity audio system can be built
using a TI chipset, comprising a modulator (e.g.,
TAS5086) and the TAS5102/TAS5103. This system
only requires a simple passive LC demodulation filter
to deliver high-quality, high-efficiency audio
amplification with proven EMI compliance. These
devices require two power supplies, at 3.3 V for
VREG, and up to 23 V for PVDD. The
TAS5102/TAS5103 does not require power-up
sequencing due to internal power-on reset. The
efficiency of this digital amplifier is greater than 90%
into 8 Ω, which enables the use of smaller power
supplies and heatsinks.
The TAS5102/3 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,
overcurrent protection, undervoltage protection, and
overtemperature protection. The TAS5102/TAS5103
has a new proprietary current-limiting circuit that
reduces the possibility of device shutdown during
high-level music transients.
BTL OUTPUT POWER
vs
SUPPLY VOLTAGE
35
f = 1 kHz
R_L = 8 Ω (BTL)
30 _{Gain = 3 dB}
25
20
THD+N = 10%
15
THD+N = 1%
10
5
0
5
10
15
20
25
VCC − Supply Voltage − V
G009
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.
PowerPAD is a trademark of Texas Instruments.
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