EV0041 Datasheet, PDF (4/5 Pages) Monolithic Power Systems – Full Bridge or Single Ended Audio Amplifier

Monolithic Power Systems
EV0041
MP8040
Full Bridge or Single Ended
Audio Amplifier
EVALUATION BOARD
Operation
1. The EV0041 comes configured as a stereo single ended audio amplifier (EV0041A).
2. To configure the board as a full bridge circuit (EV0041B), short R4, R7, R9, remove C4, C7 and
stuff C12 with a 0.47µF capacitor.
3. Connect the audio inputs to the IN pins as shown in Figure 5.
4. Connect speakers to pins 1-4 as shown in Figure 5 for single ended configuration. Use pins 2 and
3 for bridged circuit.
5. Connect the power supply to the V_IN terminals as shown in Figure 5.
6. SHDN enables/disables the MP8040. Drive SHDN low to turn on the MP8040, drive it high to turn
it off. If not used connect SHDN to GND.
7. A low output at FLT indicates that the MP8040 has detected a fault and has shutdown.
8. The DR pin is an optional fixed 5V voltage output capable of driving a 1mA load for external
circuitry.
Figure 5: Top Side Evaluation Board Diagram
Power Supply
IN
SHDN
FLT
DR
GND
IN
SHDN
FLT
DR
GND
Right
V_IN
Channel
Left
Channel
GND
Bridge
Outputs
1
-
Right
2
Channel
+
3
+
Left
4
Channel
-
Single
Ended
Outputs
EV0041 Rev 1.4_8/1/05
Monolithic Power Systems, Inc.
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