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TPA3118D2-Q1 データシート(PDF) 10 Page - Texas Instruments

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部品番号 TPA3118D2-Q1
部品情報  100-W and 50-W Class-D Stereo Automotive Amplifiers
Download  36 Pages
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メーカー  TI1 [Texas Instruments]
ホームページ  http://www.ti.com
Logo TI1 - Texas Instruments

TPA3118D2-Q1 データシート(HTML) 10 Page - Texas Instruments

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SD
MUTE
TTL
Buffer
Gain
Control
GAIN
OUTPR_FB
RINP
RINN
Gain
Control
OUTPNR_FB
FAULT
SYNC
GAIN/SLV
AM<2:0>
PLIMIT
AVCC
GVDD
LDO
Regulator
LINP
LINN
GND
Input
Sense
PBTL
Select
OUTPL_FB
Gain
Control
OUTNL_FB
AVDD
GVDD
PLIMIT
Reference
Ramp
Generator
Biases and
References
Startup Protection
Logic
SC Detect
DC Detect
Thermal
Detect
UVLO/OVLO
PVCC
GVDD
PVCC
Gate
Drive
OUTNL_
FB
PVCC
GVDD
PVCC
Gate
Drive
PWM
Logic
Modulation and
PBTL Select
OUTPL_FB
GND
OUTPL
BSPL
GND
OUTNL
BSNL
GND
BSNR
OUTPR
GND
OUTNR
OUTNR_
FB
BSPR
OUTPR_FB
PVCC
GVDD
PVCC
Gate
Drive
PVCC
GVDD
PVCC
Gate
Drive
PWM
Logic
Modulation and
PBTL Select
PLIMIT
PLIMIT
+
+
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+
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Thermal
Pad
+
PVCC
PVCC
TPA3116D2-Q1, TPA3118D2-Q1
SLOS862A – JULY 2015 – REVISED AUGUST 2015
www.ti.com
7 Detailed Description
7.1 Overview
The TPA311xD2-Q1 devices are highly efficient class-D audio amplifiers with integrated 120-m
Ω MOSFETs that
allow output currents up to 7.5 A. The high efficiency allows the amplifier to provide an excellent audio
performance without the need for a bulky heat sink.
The device can be configured for either master or slave operation by using the SYNC pin. Doing so helps to
prevent audible beat noise.
7.2 Functional Block Diagram
7.3 Feature Description
7.3.1 Gain Setting and Master and Slave
The gain of the TPA311xD2-Q1 family is set by the voltage divider connected to the GAIN/SLV control pin.
Master or slave mode is also controlled by the same pin. An internal ADC is used to detect the eight input states.
The first four stages set the GAIN in master mode to gains of 20, 26, 32, and 36 dB, respectively, whereas the
next four stages set the GAIN in slave mode to gains of 20, 26, 32, and 36 dB, respectively. The gain setting is
latched during power up and cannot be changed while device is powered. Table 2 lists the recommended resistor
values and the state and gain.
10
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Copyright © 2015, Texas Instruments Incorporated
Product Folder Links: TPA3116D2-Q1 TPA3118D2-Q1


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