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AD7671 Output has step

Hi,

 When I use AD7671 to convert signal (1Hz to 1kHz), I found steps in the output.

Attachment figure 1 is the waveform, where green line is input of AD7671;yellow line is the output of AD7671 (a DCA output, the DAC operated well).

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  • Hi Jonathan,

    I use ADR01 as the 10V reference. Resistance divider generate 2.5V reference voltage. I measured the reference pin. I think it is stable now.

    I find voltage step when I change the input DC voltage, as in Figure 1. Blue line is the input DC voltage, and Green line is the voltage step of ADC output.

    Thanks

    BR

    Henry ZHANG

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  • Hi Jonathan,

    I use ADR01 as the 10V reference. Resistance divider generate 2.5V reference voltage. I measured the reference pin. I think it is stable now.

    I find voltage step when I change the input DC voltage, as in Figure 1. Blue line is the input DC voltage, and Green line is the voltage step of ADC output.

    Thanks

    BR

    Henry ZHANG

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