The Future of Analog IC Technology
MP7720
20W Class D Mono
Single Ended Audio Amplifer
DESCRIPTION
The MP7720 is a mono 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:
180mΩ power MOSFETs
Startup / Shutdown pop elimination
Short circuit protection circuits
Mute / Standby
The MP7720 utilizes a single ended output
structure capable of delivering 20W into 4Ω
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’ proprietary variable
frequency topology that delivers excellent
PSRR, fast response time and operates on a
single power supply.
EVALUATION BOARD REFERENCE
Board Number
EV0030
Dimensions
2.4”X x 3.5”Y x 1.2”Z
FEATURES
• 20W Output at VDD = 24V into a 4Ω load
• THD+N = 0.04% at 1W, 8Ω
• 93% Efficiency at 20W
• Low Noise (190µV Typical)
• Switching Frequency Up to 1MHz
• 9.5V to 24V Operation from a Single Supply
• Integrated Startup and Shutdown Pop
Elimination Circuit
• Thermal Protection
• Integrated 180mΩ Switches
• Mute/Standby Modes (Sleep)
• Available in Tiny 8-Pin SOIC and PDIP Packages
APPLICATIONS
• Surround Sound DVD Systems
• Televisions
• 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.
TYPICAL APPLICATION
VDD
OFF ON
4
EN
6
VDD
1
PIN
8
PGND
MP7720
2
NIN
5
BS
3
AGND
7
SW
THD+N vs
Power (24V, 1KHz)
20
10
1
AUDIO
INPUT
MP7720 Rev. 1.9
3/13/2006
+
MP7720_TAC_S01
0.1
0.01
0.1
1
POWER (W)
10 30
MP7720-TPC01
www.MonolithicPower.com
1
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2006 MPS. All Rights Reserved.