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2.3.1.2
Bench Power Supply
To use the MMB0 with an external bench power supply, remove the J12 jumper and leave it open, as
shown in
Figure
7. Removing the jumper allows an external 5-V power supply to be connected to +5VA on
the J14 terminal block. Jumper J13B connects +5VA to +5VD and must remain shorted. In this
configuration, the MMB0 derives the 3.3-V digital supply for the ADS126xEVM from the 5-V bench supply,
and the bench supply directly supplies the analog supply voltage for the ADS126xEVM.
Figure 7. MMB0 Configuration for a Unipolar Bench Power Supply
SBAU206 – April 2015
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USB connector
+
5V
±
Power Input
Copyright © 2015, Texas Instruments Incorporated
ADS126xEVM Hardware
Open jumper (J12)
Shorted jumper (J13B)
ADS126xEVM-PDK
9
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