EV0066 Datasheet, PDF (5/6 Pages) Monolithic Power Systems – Mini 20W Stereo Class D Single Ended Audio Amplifier

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 ⁺
IN1
Supply
-
IN2
Enable
Evaluation Board Operation
Power Requirements
1. Power supply: 7.5V to 24V, 6A maximum
2. 0V to 1V_RMS (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 ≤ V_EN ≤ 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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