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Número de pieza | EV0066 | |
Descripción | Mini 20W Stereo Class D Single Ended Audio Amplifier | |
Fabricantes | MPS | |
Logotipo | ||
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Monolithic Power Systems
General Description
The EV0066 is a 20W stereo evaluation board
featuring MPS’ MP7720 Class D Single Ended
Audio Amplifier. The EV0066 can deliver 20W
into a 4Ω load with a 24V input supply.
The MP7720 is a mono 20W Class D Audio
Amplifier. It is one of MPS’s second generation
of fully integrated audio amplifiers which
dramatically reduces solution size by
integrating the following:
180mΩ power MOSFETs
Start up / shut down pop elimination
Short circuit protection circuits
The MP7720 utilizes a single ended output
structure capable of delivering 20W into 4Ω
speakers. As in all other MPS Class D Audio
Amplifiers, this device exhibits the high fidelity
of a Class A/B amplifier at efficiencies greater
than 90%.
Ordering Information
Board Number
EV0066
MPS IC Number
MP7720DS
EV0066 Evaluation Board
EV0066
MP7720: Mini 20W Stereo Class D
Single Ended Audio Amplifier
EVALUATION BOARD
Absolute Maximum Ratings
Supply Voltage VDD
Signal Input Voltage
Enable Voltage
26V
±2V p-p
–0.3 to 6V
Recommended Operating Conditions
Input Voltage VDD
Signal Input Voltage
Signal Input Frequency
Signal Source Impedance
External Enable Input
Speaker Resistance
7.5V to 24V
1V rms
20Hz to 20KHz
<600Ω
0V to 5V
4Ω to 8Ω
Performance
Maximum Output Power (10% THD, 4Ω) 20W
Maximum Output Power (10% THD, 8Ω) 10W
THD (1kHz, 1W)
0.05%
Power Efficiency (POUT=20W, 4Ω)
90%
Features
20W Output at 24V Input Into a 4Ω Load
0.05% THD+N @ 2W, 1KHz Into 4Ω Load
0.05% THD+N @ 2W, 1KHz Into 8Ω Load
90% Efficiency at 20W
Integrated Start-Up and Shut-Down
Pop Elimination Circuit
Thermal Protection
Integrated 180mΩ Power Switches
Mute / Standby Mode (Sleep)
Applications
Televisions
Home Stereo Systems
Monitors
(Actual Size = 1.0”X x 1.4”Y)
EV0066 Rev 1.1 05/12/04
www.monolithicpower.com
1
1 page Monolithic Power Systems
Figure 5: EV0066 Connection Diagram
EV0066
MP7720: Mini 20W Stereo Class D
Single Ended Audio Amplifier
EVALUATION BOARD
CN2
CN3
OUT1 GND GND OUT2
CN1
Power
Supply
+
-
IN1
IN2
Enable
Evaluation Board Operation
Power Requirements
1. Power supply: 7.5V to 24V, 6A maximum
2. 0V to 1VRMS (max) audio signal source, ≤ 600Ω.
3. Speaker: 4Ω or 8Ω.
Setup Condition for 24V Operation
1. Connect + and - speakers terminals to OUT and GND pins of CN2 and CN3 respectively.
2. Connect the + and 1 power supply terminals to Pin 1 and 2 of CN1 respectively.
3. Adjust the power supply to 7.5 ≤ VCC ≤ 24V, (do not turn on).
4. Connect the audio input signal source to the amplifier inputs (IN1, IN2).
5. Turn on the power supply to apply power to the board.
6. To enable the board apply a voltage, 2V ≤ VEN ≤ 6V, to the EN pin. To disable the board
connect the EN pin to ground.
EV0066 Rev 1.1 05/12/04
www.monolithicpower.com
5
5 Page |
Páginas | Total 6 Páginas | |
PDF Descargar | [ Datasheet EV0066.PDF ] |
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