EV7720DS-7782-00D – 150W CLASS D, 5.1 CHANNEL AUDIO BOARD

EVALUATION BOARD

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

www.MonolithicPower.com

11

8/8/2005

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2005 MPS. All Rights Reserved.

TM

QUICK START GUIDE

1. Input / Output Requirements

a. Power supply: 9.5V to 24V, 6A

b. Enable: 3.3V to 5V

≤ 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

d. Set the enable signal to LOW by applying 0V to the enable input.

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-