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TAS2781RYYR датащи(PDF) 70 Page - Texas Instruments

номер детали TAS2781RYYR
подробное описание детали  TAS2781 24-V Class-D Amplifier with Real Time Integrated Speaker Protection and Audio Processing
PDF  90 Pages
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производитель  TI2 [Texas Instruments]
домашняя страница  https://www.ti.com
Logo TI2 - Texas Instruments

TAS2781RYYR датащи(HTML) 70 Page - Texas Instruments

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Table 9-1. Recommended External Components (continued)
COMPONENT
DESCRIPTION
SPECIFICATION
MIN
TYP
MAX
UNIT
C8, C9
Bootstrap Capacitors
Type
X7R
Capacitance, 20% Tolerance
100
nF
Rated Voltage
6
V
Lf1, Lf2 (optional)
EMI filter inductors are optional. TAS2781
device support filter less Class-D operation.
PFFB feature is recommended if ferrite
bead EMI filters are used
Impedance at 100MHz
120
Ω
DC Resistance
0.095
Ω
DC Current
7
A
Cf1, Cf2 (optional)
EMI filter capacitors are optional. Design
must use Lf2, Lf3 if Cf1, Cf2 are used
Capacitance
1
nF
9.3 Design Requirements
For this design example, use the parameters shown in Section 9.2.
Table 9-2. Design Parameters
DESIGN PARAMETER
EXAMPLE VALUE
Audio Input
Digital Audio, I2S
Current and Voltage Data Stream
Digital Audio, I2S
Mono or Stereo Configuration
Mono
Max Output Power at 1% THD+N,
RL = 4 Ω
25 W
9.4 Detailed Design Procedure
9.4.1 Mono/Stereo Configuration
In applications the device is assumed to be operating in mono mode. See Section 8.3.2 for information on
changing the I2C address of the TAS2781 to support stereo operation. Mono or stereo configuration does not
impact the device performance.
9.4.2 EMI Passive Devices
The TAS2781 supports spread spectrum to minimize EMI. It is allowed to include passive devices on the
Class-D outputs. The passive devices (LC filter) have to be properly selected to maintain the stability of the
output stage. See Section 8.4.5 for details.
TAS2781
SLOSE86B – JULY 2022 – REVISED JULY 2023
www.ti.com
70
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Copyright © 2023 Texas Instruments Incorporated
Product Folder Links: TAS2781



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