EV7747DQ-00A
2x20W Stereo Single Ended Class D
Audio Amplifier Evaluation Board
EV7747DQ-00A Rev. 1.0
www.MonolithicPower.com
1
1/5/2011
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
The Future of Analog IC Technology
DESCRIPTION
The EV7747DQ-00A is the evaluation board for
the MP7747, a 20W mono Class D Audio
Amplifier. It is one of MPS’ products of fully
integrated audio amplifiers which dramatically
reduce solution size by integrating the following:
•
250m
Ω
power MOSFETs
•
Startup / Shutdown pop elimination
•
Short circuit protection circuits
The MP7747 utilizes a single ended output
structure capable of delivering 20W into 4
Ω
speakers. MPS Class D Audio Amplifiers exhibit
the high fidelity of a Class A/B amplifier at high
efficiency. 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
9.5~36 V
FEATURES
•
2 x 20W Output at V
DD
= 24V into a 4
Ω
load
•
THD+N = 0.02% at 1W, 8
Ω
, 1kHz
•
91% Efficiency at 20W and V
DD
=24V with
4
Ω
load
•
Low Noise (103µV Typical)
•
9.5V to 36V Operation from a Single Supply
APPLICATIONS
•
Flat Panel TV
•
Portable Docking Stations
•
Surround Sound DVD Systems
•
Televisions
•
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.
EV7747DQ-00A EVALUATION BOARD
(L x W x H) 3.5” x 2.5” x 1.2”
9.0cm x 6.3cm x 3.0cm
Board Number
MPS IC Number
EV7747DQ-00A MP7747DQ
THD+N vs. P
OUT
V
DD
=24V, Freq=1kHz
0.01
20
0.02
0.05
0.1
0.2
0.5
10
5
2
1
THD + N (%)
60m
35
100m
1
10
P
OUT
(W)