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TPA3111D1 датащит (Datasheet) 1 Page - TI store

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№ деталь TPA3111D1
подробность  10-W FILTER-FREE MONO CLASS-D AUDIO POWER AMPLIFIER with SPEAKER GUARD™
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производитель  TI [TI store]
домашняя страница  http://www.ti.com
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INP
INN
SD
SD
Fault
Fault
PLIMIT
PLIMIT
PVCC
8to26V
1uF
OUTN
FERRITE
BEAD
FILTER
OUTP
10W
8Ω
OUTN
FERRITE
BEAD
FILTER
FERRITE
BEAD
FILTER
OUTP
10W
8Ω
OUT+
-
OUT
Audio
Source
TPA3111D1
GAIN0
GAIN0
GAIN1
GAIN1
TPA3111D1
www.ti.com ................................................................................................................................................................................................ SLOS618 – AUGUST 2009
10-W FILTER-FREE MONO CLASS-D AUDIO POWER AMPLIFIER with SPEAKER GUARD™
Check for Samples: TPA3111D1
1
FEATURES
DESCRIPTION
2
10-W into an 8-
Ω Load at 10% THD+N From a
12-V Supply
The TPA3111D1 is a 10-W efficient, Class-D audio
power amplifier for driving a bridge tied speaker.
7-W into an 4-
Ω Load at 10% THD+N From a
Advanced EMI Suppresion Technology enables the
8-V Supply
use of inexpensive ferrite bead filters at the outputs
94% Efficient Class-D Operation into 8-
Ω Load
while meeting EMC requirements. SpeakerGuard™
Eliminates Need for Heat Sinks
speaker protection system includes an adjustable
Wide Supply Voltage Range Allows Operation
power limiter and a DC detection circuit. The
from 8 to 26 V
adjustable power limiter allows the user to set a
"virtual" voltage rail lower than the chip supply to limit
Filter-Free Operation
the amount of current through the speaker. The DC
SpeakerGuard™ Speaker Protection Includes
detect circuit measures the frequency and amplitude
Adjustable Power Limiter plus DC Protection
of the PWM signal and shuts off the output stage if
Flow Through Pin Out Facilitates Easy Board
the input capacitors are damaged or shorts exist on
the inputs.
Layout
Robust Pin-to-Pin Short Circuit Protection and
The TPA3111D1 can drive a mono speaker as low as
Thermal Protection with Auto-Recovery Option
4
Ω. The high efficiency of the TPA3111D1, > 90%,
eliminates the need for an external heat sink when
Excellent THD+N/ Pop Free Performance
playing music.
Four Selectable, Fixed Gain Settings
The outputs are fully protected against shorts to
Differential Inputs
GND, VCC, and output-to-output. The short-circuit
protection
and
thermal
protection
includes
an
APPLICATIONS
auto-recovery feature.
Televisions
Monitor/Laptop
Consumer Audio Equipment
Figure 1. Simplified Application Diagram
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
SpeakerGuard is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright © 2009, 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.




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