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TPA6120A2DWP データシート(PDF) 8 Page - Texas Instruments

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部品番号 TPA6120A2DWP
部品情報  High Fidelity Headphone Amplifier
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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

TPA6120A2DWP データシート(HTML) 8 Page - Texas Instruments

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LIN−
LIN+
RIN−
RIN+
TPA6120A2
LOUT
ROUT
LVCC+
LVCC–
LIN+
LIN–
RIN+
RIN–
RVCC+
RVCC–
Audio Precision
Measurement
Output
+
-
LEFTINM
LEFTINP
CI
CI
VDD
GND
External Power
Supply
+
-
1uf
HPLEFT
Rseries
Load
Low Pass
Filter
Audio Precision
Measurement
Input
+
-
TPA6120A2
TPA6120A2
SLOS431B – MARCH 2004 – REVISED FEBRUARY 2015
www.ti.com
8 Parameter Measurement Information
A.
Separate power supply decoupling capacitors are used on all Vcc pins.
B.
The low-pass filter is used to remove harmonic content above the audible range.
Figure 12. Test Circuit
9 Detailed Description
9.1 Overview
The TPA6120A2 is a current-feedback amplifier with differential inputs and single-ended outputs.
9.2 Functional Block Diagram
9.3 Feature Description
9.3.1 Current-Feedback Amplifier
Current feedback results in low voltage noise, low distortion, high open-loop gain throughout a large frequency
range, and can be used in a similar fashion as voltage-feedback amplifiers. The low distortion of the TPA6120A2
results in a signal-to-noise ratio of 128 dB.
9.3.2 Independent Power Supplies
Because the power supplies for the two amplifiers are available separately, one amplifier can be turned off to
conserve power.
See Power Supply Recommendations.
8
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Copyright © 2004–2015, Texas Instruments Incorporated
Product Folder Links: TPA6120A2


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