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I need to implement a 7-bit single-slope ADC whose structure is shown in the attached file. The counter in the ADC must operate below 10Meg Hz.
However, the voltage output of my integrator cannot vary linearly with time. It looks straight within 1us, but then after 1us it looks like an arc...
Thank you so much for your suggestions. Special thanks to FvM. After I added a switch to the integrator, the integrator output can vary with time. You are so smart!
The capacitor is connected between the negative input of the op and the op output so that the output of the op will continue to rise with time.
However, i don't know why the output of the op doesn't vary with time.
Hi,
I am trying to implement the integrator shown in the file integrator.jpg. But I don't know why the output of the integrator is always constant and doesn't vary with time. I have attached the schematic of the OTA used in this integrator. Below is my spice code. Could anyone please take a...
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