Information

PmodDA3™ Reference Manual
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Page 2 of 2
LDAC is at a high voltage state. Pulsing the LDAC pin low and then high will asynchronously transfer all of the data
into the DAC register, resulting in the appropriate analog voltage on the SMA connector. Alternatively, users may
hold the LDAC pin at a logic level low voltage when bringing the CS pin high to directly transfer the data from the
shift register to the DAC register.
Pin
Signal
Description
1
~CS
Chip Select
2
DIN
Data Input
3
~LDAC
LOAD DAC
4
SCLK
Serial Clock
5
GND
Power Supply Ground
6
VCC
Power Supply (3.3V/5V)
Table 1. Pinout description table.
Any external power applied to the PmodDA3 must be within 2.7V and 5.5V; however, it is recommended that the
Pmod is operated at 3.3V.
3 Physical Dimensions
The pins on the pin header are spaced 100 mil apart. The PCB is 1.2 inches long on the sides parallel to the pins on
the pin header and 0.8 inches long on the sides perpendicular to the pin header.