TPA2012D2 Datasheet, PDF (1/15 Pages) Texas Instruments – 2.1 W/CH STEREO FILTER-FREE CLASS-D AUDIO POWER AMPLIFIER

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YZH
RTJ
TPA2012D2
SLOS438 – DECEMBER 2004
2.1 W/CH STEREO FILTER-FREE CLASS-D AUDIO POWER AMPLIFIER
FEATURES
• 2.1 W/Ch Into 4 Ω at 5 V
• 1.4 W/Ch Into 8 Ω at 5 V
• 720 mW/Ch Into 8 Ω at 3.6 V
• Only Two External Components Required
• Power Supply Range: 2.5 V to 5.5 V
• Independent Shutdown Control for Each
Channel
• Selectable Gain of 6, 12, 18, and 24 dB
• Internal Pulldown Resistor On Shutdown Pins
• High PSRR: 77 dB at 217 Hz
• Fast Startup Time (3.5 ms)
• Low Supply Current
• Low Shutdown Current
• Short-Circuit and Thermal Protection
• Space Saving Packages
• 2 mm X 2 mm NanoFree™ WCSP (YZH)
(Future Product)
• 4 mm X 4 mm Pb-Free Thin QFN (RTJ)
with PowerPAD™
APPLICATION CIRCUIT
TLV320AIC26
or
TLV320AIC28
HPL
or
SPK1
HPR
or
SPK2
Shutdown
Control
APPLICATIONS
• Wireless or Cellular Handsets and PDAs
• Portable DVD Player
• Notebook PC
• Portable Radio
• Portable Gaming
• Educational Toys
• USB Speakers
DESCRIPTION
The TPA2012D2 is a stereo, filter-free Class-D audio
amplifier available in a WCSP or QFN package. The
TPA2012D2 only requires two external components
for operation.
The TPA2012D2 features independent shutdown
controls for each channel. The gain can be selected
to 6, 12, 18, or 24 dB utilizing the G0 and G1 gain
select pins. High PSRR and differential architecture
provide increased immunity to noise and RF rectifi-
cation. In addition to these features, a fast startup
time and small package size make the TPA2012D2
an ideal choice for both cellular handsets and PDAs.
The TPA2012D2 is capable of driving 1.4 W/Ch at
5 V or 720 mW/Ch at 3.6 V into 8 Ω. The TPA2012D2
is also capable of driving 4 Ω. The TPA2012D2
provides thermal and short circuit protection.
INL−
INL+
PV_DD
AV_DD
PGND
AGND
INR− ^TPA2012D2
OUTR+
INR+
OUTR−
OUTL+
SDR SDL
OUTL−
G0 G1
To Battery
C_S
Gain
Control
TPA4411
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.
NanoFree, PowerPAD are trademarks of Texas Instruments.
UNLESS OTHERWISE NOTED this document contains PRO-
DUCTION DATA information current as of publication date. Prod-
ucts conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily
include testing of all parameters.
Copyright © 2004, Texas Instruments Incorporated