Analog Output

The ZSOM-Control provides 4 analog outputs. They are generated by one DAC chip with 4 channels and an output stage for each channel. The ZSOM-Mini has no analog outputs.

• Use AGND (not GND) as reference.
• Each output has a 100 Ω series resistor. The output voltage at the load is therefore slightly lower than the set value; with a load of 10 kΩ the error is about 1 %. For precise voltages, use high-impedance loads.
• Do not apply external voltages to the outputs.

The DAC is controlled from the FPGA via the DAC FPGA driver VIs of the SDK. The driver handles the communication with the DAC chip (CLIP items DAC_SCK, DAC_SDI, DAC_SDO, DAC_SYNC, DAC_LDAC and DAC_RESET).

Examples in the SDK:

• ZSOM-Control_DAC_DC.lvproj
• ZSOM-Control_DAC_waveform.lvproj