EV7722DF-02A
20W Stereo Class D Single Ended
Audio Amplifier Evaluation Board
EV7722DF-02A Rev. 1.1 www.MonolithicPower.com 1
10/19/2007 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2007 MPS. All Rights Reserved.
The Future of Analog IC Technology
DESCRIPTION
The EV7722DF-02A is the evaluation board for
the MP7722. The MP7722 is a stereo 20W
Class D Audio Amplifier. It is one of MPS’
second generation of fully integrated audio
amplifiers which dramatically reduces solution
size by integrating the following:
• 180m power MOSFETs
• Startup / Shutdown pop elimination
• Short circuit protection circuits
• Mute / Standby
The MP7722 utilizes a single ended output
structure with capacitor divider configuration
capable of delivering 2x20W into 4 speakers.
MPS Class D Audio Amplifiers exhibit the high
fidelity of a Class A/B amplifier at efficiencies
greater than 90%. The circuit is based on the
MPS’ AAM
TM
proprietary variable frequency
topology that delivers excellent linearity, fast
response time and operates on a single power
supply.
ELECTRICAL SPECIFICATIONS
Parameter Symbol Value Units
Supply Voltage V
DD
24 V
FEATURES
• 20W Output at V
DD
= 24V into a 4 load
• THD+N = 0.08% at 1W, 8
• 90% Efficiency at 20W
• 9.5V to 24V Operation from a Single Supply
• Mute/Standby Modes (Sleep)
APPLICATIONS
• Flat Panel and Projection Televisions
• DVD and Surround Sound Systems
• Flat Panel Monitors
• Multimedia Computers
• Home Stereo Systems
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
AAM (Analog Adaptive Modulation) is a Trademark of Monolithic Power
Systems, Inc.
EV7722DF-02A EVALUATION BOARD
(L x W x H) 3.5” x 2.4” x 1.2”
8.9cm x 6.1cm x 3.0cm
Board Number MPS IC Number
EV7722DF-02A MP7722DF
THD+N (%)
P
OUT
(W)
THD+N vs Output Power
V
DD
= 24V, f = 1KHz
20
10
1
0.1
0.01
0.1 1.0 10
