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ADS8168EVM-PDK: Pseudo Differential mode

Peter Liedholm
Prodigy 20 points

Part Number: ADS8168EVM-PDK
Other Parts Discussed in Thread: ADS8168

Hi

I would like samples to be negative when below Vref/2. Is this at all supported?

Somthing about this transfer function (without exact values)

-2.048 V = 0x8000

-0.001 V = 0xFFFF

0.000 V = 0x0000

0.001 V = 0x0001

2.048 V = 0x7FFF

If possible, then share jumper setting, sw setting and input signal pins / signal levels....

Regards

/Peter

  • 0
    TI__Guru 52510 points

    Hello Peter,

    The ADS8168 only supports straight binary encoding for both single ended inputs and pseudo-diff inputs.  This is a limitation of the device itself, and not the EVM or GUI software.

    Table 2 in the ADS8168 datasheet specifies the output code details.

    Regards,
    Keith Nicholas
    Precision ADC Applications