TPA3140D2 Datasheet, PDF (1/40 Pages) Texas Instruments – 10-W Inductor Free Stereo (BTL) Class-D Audio Amplifier

Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
TPA3140D2
SLOS882A – JANUARY 2015 – REVISED APRIL 2015
TPA3140D2 10-W Inductor Free Stereo (BTL) Class-D Audio Amplifier with Ultra Low EMI
and AGL
1 Features
•1 2x10 W/ch into 6-Ω Loads at 10% THD+N from a
12-V Supply
• 2x10 W/ch into 8-Ω Loads at 10% THD+N from a
13-V Supply
• Up to 90% Efficient Class-D Operation (8 Ω)
Eliminates Need for Heat Sinks
• <0.05% THD+N at 1 W/4 Ω/1 kHz
• <65-µV A-wgt Output Noise
• Wide Supply Voltage Range Allows Operation
from 4.5 V to 14.4 V
• Inductor-Free Operation
• Enhanced EMI Performance with Spread
Spectrum and 1SPW Operation
• SpeakerGuard™ Speaker Protection Includes
Automatic Gain Limit, Adjustable Power Limiter
and DC Protection
• Robust Pin-to-Pin, Pin-to-Ground and Pin-to-
Power Short Circuit Protection and Thermal
Protection
• Four Selectable, Fixed Gain Settings
• Single Ended or Differential Analog Inputs
• Click and Pop Free Startup
2 Applications
• Televisions
• BT Speakers
• Wireless Speakers
• Mini Speakers
• USB Speakers
• Consumer Audio Equipment
3 Description
The TPA3140D2 is an efficient, Class-D audio power
amplifier for driving bridged-tied stereo speakers at
up to 10 W/6 Ω or 8 Ω (per channel).
Advanced EMI Suppression Technology with Spread
Spectrum Control and 1SPW modulation scheme
enables the use of inexpensive ferrite bead filters at
the outputs while meeting EMC requirements for
system cost reduction. TPA3140D2 is not only fully
protected against shorts and overload, the
SpeakerGuard™ speaker protection circuitry includes
an adjustable Automatic Gain Limit (AGL), an
adjustable power limiter and a DC detection circuit for
protection of the connected speakers. The AGL
allows adjustment of the maximum output voltage
without signal clipping for enhanced speaker
protection and audio quality. The DC detect and Pin-
to-Pin, Pin-to-Ground and Pin-to-Power Short Circuit
protection circuit protect the speakers from output DC
and pin shorts caused in production. The outputs are
also fully protected against shorts to GND, PVCC,
and output-to-output. The short-circuit protection and
thermal protection includes an auto recovery feature.
The TPA3140D2 can drive stereo speakers with as
low as 4-Ω impedance. The high efficiency of the
TPA3140D2, 90% with 8-Ω load, eliminates the need
for an external heat sink, and TPA3140D2 will be
able to output full power on a 2-layer PCB.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPA3140D2
HTSSOP (28)
9.70 mm x 4.40 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
4 Simplified Schematic
RIGHT
Audio
Source
LEFT
And Control
TPA3140D2
TAS5630
PBTL
DETECT
/SD
/FAULT
Ferrite
Bead
Filter
Ferrite
Bead
Filter
1SPW Modulation Scheme Select
4 Level Gain Select
Spread Spectrum Mode Select
AGL Speed Select / Voltage Limiter
AGL / Limiter Threshold
1SPW
GAIN
SSCTRL
LIMRATE
LIMTHRES
Power Supply
4.5V-14.4V
110VAC->240VAC
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.