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EV7722DF-02A Datasheet(PDF) 7 Page - Monolithic Power Systems

No. de pieza EV7722DF-02A
Descripción Electrónicos  20W Stereo Class D Single Ended Audio Amplifier Evaluation Board
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Fabricante Electrónico  MPS [Monolithic Power Systems]
Página de inicio  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

EV7722DF-02A Datasheet(HTML) 7 Page - Monolithic Power Systems

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EV7722DF-02A – 20W STEREO CLASS D SINGLE ENDED AUDIO AMPLIFIER
NOTICE:
The information in this document is subject to change without notice. Users should warrant and guarantee that third
party Intellectual Property rights are not infringed upon when integrating MPS products into any application. MPS will not
assume any legal responsibility for any said applications.
EV7722DF-02A Rev. 1.1
www.MonolithicPower.com
7
10/19/2007
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2007 MPS. All Rights Reserved.
QUICK START GUIDE
This board is set up from the factory for 24V operation. To use with a 12V power supply adjust the
components as specified in the 12V operation Section 3 below. For more information, consult the
MP7722 datasheet.
1. Power Requirements
a. Power Supply: 24V, 6A maximum.
b. 0VRMS to 1VRMS (Max) audio signal source.
c. Speaker: 4Ω or 8Ω
2. Setup Condition for 24V Operation
a. Connect the outputs to the external speakers.
b. Adjust the power supply to 24V (do not turn on).
c. Connect the power supply to the VDD terminals.
d. Set the enable switch to the DISABLE position.
e. Connect the audio input signal source to the amplifier inputs (IN1, IN2).
f. Turn on the power supply to apply power to the board.
3. 12V Operation Modifications
a. Change C6 to 1.8nF and C15 to 2.2nF.
b. Remove R23, R26 and R31. Change R10 and R16 from 20kΩ to 10kΩ
c. Adjust the power supply to 12V (do not turn on).
d. Use same procedure for turn on as specified in Section 2.
4. Music Turn-On Sequence
a. Set the enable switch to the ENABLE position.
b. Audio should be heard from the speaker(s).
5. Music Turn-Off Sequence
a. Set the enable switch to the DISABLE position.


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