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