2*25W @4
Ω
TPA3123 Class-D Audio Amplifier Board
TABLE 2-4 CONNECTION WITH NEXT BOARD
Connector Mark
Description
VDD
Connect to Positive (+) of DC 10 to 36V Power Supply (J10) of
the next board
J12
Connect to Negative (GND) of DC 10 to 36V Power Supply (J10)
of the next board
GND
SD Sleep
Control
J13
MUTE Mute
Control
Note:
1. Maximum 4 amplifiers are recommended to be connected in series.
2. Remember to use AWG12-compliant cable or equivalent for series connection.
2.5 Mute Settings
To mute the output audio signal, connect “VDD” and “MUTE” of the terminal block with a
piece of lead. Usually, “MUTE” shall be left unconnected.
FIGURE 2-6 MUTE SETTINGS
TABLE 2-5 MUTE SETTINGS
Connector Mark
Description
J13 MUTE
When “MUTE” is connected with “VDD”, both channels will be
muted and enter into idle mode. When connected to ground or
left unconnected, both channels will resume regular operation.
Note:
Please power the amplifier board with DC 10-30V.
2.6 Sleep Settings
To enable sleep setting, connect “VDD” and “SD” of the terminal block with a piece of
lead. Usually, “SD” shall be left unconnected.
©
2004-2009 Sure Electronics Inc
AA-AB018_Ver1.0_Page 8
