TM
EV7720DS-7782-00D – 150W CLASS D, 5.1 CHANNEL AUDIO BOARD
EVALUATION BOARD
QUICK START GUIDE
1. Input / Output Requirements
a. Power supply: 9.5V to 24V, 6A
b. Enable: 3.3V to 5V
c. 0V to 1VRMS (max) audio signal source, ≤ 600Ω.
d. Main/Satellite Speakers: 4Ω MINIMUM
e. Subwoofer: 6Ω MINIMUM
2. Setup Condition for 24V Operation
a. Connect the satellite speakers (4Ω MINIMUM) to the output terminals OUT1 through
OUT5 to - normally Left Front, Right Front, Left Rear, Right Rear, and Center.
b. Connect the subwoofer speaker (6Ω MINIMUM) to the SUB+ / SUB- output terminals.
c. Adjust the power supply to 9.5 ≤ VDD ≤ 24V (do not turn on).
d. Set the enable signal to LOW by applying 0V to the enable input.
e. With the power supply off, connect the power supply to the VDD terminals.
f. Connect the audio input signal sources to the amplifier inputs corresponding to output
channels.
g. Turn on the power supply to apply power to the board.
3. Music Turn-On Sequence
a. UNMUTE the amplifiers by applying 3.3V or 5V to the enable input.
b. Audio should be heard from the speaker(s).
4. Music Turn-Off Sequence
a. Set enable LOW by applying 0V to the enable input.
OUT5 OUT4 OUT3 OUT2 OUT1 OUTSUB+
GND5 GND4 GND3 GND2 GND1 OUTSUB-
NOTICE: The information in this document is subject to change without notice. Please contact MPS for current specifications.
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.
EV7720DS-7782-00D Rev. 1.0
8/8/2005
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2005 MPS. All Rights Reserved.
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