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TPA3110D2-Q1 Datasheet(PDF) 19 Page - Texas Instruments

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Part # TPA3110D2-Q1
Description  Filter-Free Stereo Class-D Audio Power Amplifier
Download  36 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TPA3110D2-Q1 Datasheet(HTML) 19 Page - Texas Instruments

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PVCC
PVCC
GAIN1
6
AVCC
7
8
AGND
9
GVDD
23
22
21
20
TPA3110D2-Q1
FAULT
2
LINP
3
4
LINN
5
GAIN0
27
26
25
24
PLIMIT
10
RINN
11
12
RINP
13
NC
19
18
17
16
PBTL
14
15
GND
29
PowerPAD
SD
1
28
PVCC
100 F
0. 1 F
1000 pF
100 F
0.1
F
1000 pF
Audio
Source
Control
System
100 k
10
100 kW
(1)
1 k
FB
FB
0. 47 F
1000 pF
0.47 F
1000 pF
AVCC
1 F
m
1 F
m
1 F
m
1 F
m
OUTNL
BSNL
BSNR
OUTNR
PVCCL
BSPL
OUTPL
PGND
PGND
OUTPR
BSPR
PVCCR
PVCCR
PVCCL
AVCC
TPA3110D2-Q1
www.ti.com
SLOS794B – SEPTEMBER 2012 – REVISED SEPTEMBER 2015
Typical Application (continued)
(1)
A 100-k
Ω resistor is needed if the PVCC slew rate is more than 10 V/ms.
Figure 37. Stereo Class-D Amplifier With PBTL Output and Single-Ended Input
8.2.1 Design Requirements
The typical requirements for designing the external components around the TPA3110D1-Q1 include efficiency
and EMI/EMC performance. For most applications, only a ferrite bead is needed to filter unwanted emissions.
The ripple current is low enough that an LC filter is typically not needed. As the output power increases, causing
the ripple current to increase, an LC filter can be added to improve efficiency. An LC filter can also be added in
cases where additional EMI suppression is needed.
In addition to discussing how to choose a ferrite bead and when to use an LC filter, the following sections also
discuss the input filter and power supply decoupling. The input filter must be chosen with the input impedance of
the amplifier in mind. The cut-off frequency should be chosen so that bass performance is not impacted. Power
supply decoupling is important to ensure that noise from the power line does not impact the audio quality of the
amplifier output.
Copyright © 2012–2015, Texas Instruments Incorporated
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