Category: Hardware
Product Number: AD7327-EP
Software Version: NA
Hi,
AD7327-EP usage configurations:
- External RC filter for each channel (R=200 ohms, C=680pF)
- CH5 to CH7, configured as DC channels and range are as follows:
- CH5 +/- 2.5V
- CH6 +/- 10V
- CH7 +/- 5V
- CLK is 6.6MHz
- CS low to CS low is 2.72us
Issue with CH5:
- Input voltage applied at CH5, 2.498 VDC from function generator
- ADC is configured to capture 8 samples from the same channel (CH5)
- The datasheet specifies Track mode starts from 14th rising edge clock cycle.
- During this there is a dip in the input voltage observed (Waveforms attached). And it is happening for all the 8 samples. The input is constant 2.48VDC and not changing at all.
- Why is this behavior ? any reason ?. Is the internal sampling capacitor discharged every time ?
- How much time is required for Input to reach steady state?
Details on Waveforms:
- The labels are provided to indicate the signal
- The VCH5 is the voltage at the input of ADC CH5, Exactly probed across the external Capacitor.
Thanks
