EV0045 Datasheet, PDF (5/6 Pages) Monolithic Power Systems – Compact 25W Class D Stereo Bridged Audio Amplifier

EV0045 (MP7731) COMPACT 25W CLASS D STEREO BRIDGED AUDIO AMPLIFIER
PRELIMINARY INFORMATION
Table 1: EV0045 Stereo Full Bridge Bill of Materials (continued)
Ref
Item Qty Des
21 2
R4
R14
22
10
TP1-
TP10
Distributor: Digikey
Value
174k
Ohm
Description
Film Resistor, 1%
Test Point Square
Header
Package
SM0603
Manufacturer
Panasonic
Manufacturer
Part Number
ERJ-3EKF1743V
Distributor
Part Number
P174KHCT-ND
Sullins
PTC36SAAN
S1012-36-ND
EVALUATION BOARD OPERATION
OUT1+ OUT1- VCC GND OUT2+ OUT2-
GND
IN1 GND IN2
EN
Figure 2: Board Connections
Power Requirements
1. Power supply: 12V
2. 0 -1V_RMS (max) audio signal source.
3. Speaker: 4Ω or 8Ω:
Setup Condition for 12V Operation
1. Connect speaker outputs to OUT1+, OUT-,
OUT2+, OUT2- respectively.
2. Connect the audio inputs to IN1, GND, IN2
respectively.
3. Adjust the power supply to 12V, (do not turn
on)
4. Connect the power supply to the VCC, GND
terminals
5. Apply power to the board
6. Audio should be heard from the speaker(s)
06/04, Rev. 1.3
www.MonolithicPower.com
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