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PDF EV0066 Data sheet ( Hoja de datos )

Número de pieza EV0066
Descripción Mini 20W Stereo Class D Single Ended Audio Amplifier
Fabricantes MPS 
Logotipo MPS Logotipo



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No Preview Available ! EV0066 Hoja de datos, Descripción, Manual

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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 4load 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:
ƒ 180mpower MOSFETs
ƒ Start up / shut down pop elimination
ƒ Short circuit protection circuits
The MP7720 utilizes a single ended output
structure capable of delivering 20W into 4
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
<600
0V to 5V
4to 8
Performance
Maximum Output Power (10% THD, 4) 20W
Maximum Output Power (10% THD, 8) 10W
THD (1kHz, 1W)
0.05%
Power Efficiency (POUT=20W, 4)
90%
Features
ƒ 20W Output at 24V Input Into a 4Load
ƒ 0.05% THD+N @ 2W, 1KHz Into 4Load
ƒ 0.05% THD+N @ 2W, 1KHz Into 8Load
ƒ 90% Efficiency at 20W
ƒ Integrated Start-Up and Shut-Down
Pop Elimination Circuit
ƒ Thermal Protection
ƒ Integrated 180mPower Switches
ƒ Mute / Standby Mode (Sleep)
Applications
ƒ Televisions
ƒ Home Stereo Systems
ƒ Monitors
(Actual Size = 1.0”X x 1.4”Y)
EV0066 Rev 1.1 05/12/04
www.monolithicpower.com
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EV0066 pdf
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, 600.
3. Speaker: 4or 8.
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
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