Digilent 410-217P - Manual (Page 2)

PmodAD2 Reference Manual
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Analog Inputs and V
Ref
The PmodAD2 allows for up to four analog
inputs, VIN1 – VIN4. To use the input VIN4,
the jumper JP1 must be set to V4.
The configuration register has a REF_SEL bit
that, when enabled, allows a voltage other than
the supply voltage to be used as the reference.
If REF_SEL is enabled, and if JP1 is set to
REF, V
Ref
from the on-board voltage reference
generator is 2.048V. If JP1 is set to V4, V
Ref
is
the voltage at input VIN4.
Connector J2 – Analog Input
Pin
Signal Description
1 VIN1 Analog Input 1
2 VIN2 Analog Input 2
3 VIN3 Analog Input 3
4 VIN4 Analog Input 4
5 GND Power Supply Ground
6 VCC Power Supply (3.3V)