When I use AD5940 to implement a 3 electrode biochemical measurement, I found that sine-wave generator can only generate the positive waveform.
How can I generate the negative sine-wave to the electrode ?
What amplitude and frequency waveform do you want to generate? Are you using the AD5940_Impedance example project?
Thank you for your help.
I want to generate a frequency from 0.1Hz to 10KHz with amplitude -0.6V.
The example project I used is AD5940_BioElec
Or should I reference other example project ?
By the way, I use the 3 electrode circuit.
For 3 electrode circuit I would recommend that you use the AD5940_ECSns_EIS project. It is already configured for a 3 lead sensor.
Thank you~ I will try AD5940_ECSns_EIS project.
But this project can generate the negative sine-waveform ?
When you say negative are you referring to the the dc offset? If so it is possible to set this in the example project by setting BiasVolt parameter