I am using AD7747 IC for capacitance measurement. I have seen the circuit using opamp for extending the range of AD7745/46 IC. Can same be applied for AD7747? If yes, What will be the new range for the circuit of AD7747 with extension circuit…
I am writing to you on this forum to ask you support and help.
I am using the Evaluation Board AD7747 (24-Bit Capacitance-to-Digital Converter )
of the US company Analog Device, to read some capacity values.
( Datasheet: www.analog…
There is an updated software download available from the evaluation board page:
This is compatible with Windows 7.
2. 测量电容范围不同，AD7747为17+/-4pf（当然可以根据外接电路扩展，见cn-0129），而AD7150 为10+0.5～4pf。
this is same as AD7747 Differential Mode
find attached an excel sheet which contains a representation of the model for the CDC calculations.
this should allow you to get a better understanding of the CDC data and its representative capacitive value.
I hope this helps
The software available to download from the evaluation board page is compatible with Windows 7:
Please try this version of the software…
also see if this Helps
AD7747 - zero scale capacitance
I'm moving this to the AD7747 forum, where they can better assist you.