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).
AD7671
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The AD7671 is a 16-bit, 1 MSPS, charge redistribution SAR, analog-to-digital converter that operates from a single 5 V power supply. It contains a high...
Datasheet
AD7671 on Analog.com
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).
Hi Jonathan,
I found when I chang the input driver of ADC(AD7671) the steps will be different. When I use AD797 as the driver the output is in Figure 1. When I remove AD797 and drive the input directly from the generator the output is in Figure2.
I did not use AD8021 which is recommand in ADC's datasheet. I'm afraid the problem is the input driver. What's your opinion?
Many thanks
BR
Henry ZHANG
Hi Jonathan,
I found when I chang the input driver of ADC(AD7671) the steps will be different. When I use AD797 as the driver the output is in Figure 1. When I remove AD797 and drive the input directly from the generator the output is in Figure2.
I did not use AD8021 which is recommand in ADC's datasheet. I'm afraid the problem is the input driver. What's your opinion?
Many thanks
BR
Henry ZHANG