Source DC Bus
~3.7 VDC
Switching
Regulator
Power
button
Wet Sounds A-Link Mk2
Eleven Engineering Inc.
Power Block Diagram
072519
+3.3V DC Bus
† Power
Down
Prep
enable
FET
Digital
Ground
Analog
Ground
3.7 V Li-Po
Battery Pack
5VDC
Orange
Charge
IC
includes
Hi/Lo V
protect
Micro
USB Jack
3.3V to
motherboard
† Low
BATT
† Bridge
Ground
† Soft
Power
† Gnd Loop
Sense
BATT
LED
Notes
•
Signals marked with † connect to
the Signal Block page
•
Ground Loop detection/smart
splitting of grounds (for hum/buzz
avoidance) happens only at power
up and when mode (Tx/Rx) is
toggled
•
The unit is configured to be able to
operate in either Tx or Rx mode
while charging
•
Some users may opt to keep their
units connected to 5V power at all
times — this mode of operation is
supported
† BATT
Volts
