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Hi, Klaus.
20mV is about 1% error. (Vrange=0~2V, C=10pF, Time=20us, Iin=0~1uA)
Also, integrator drives over a 300pF external load. I think the integrator output can be amplified by Cload/Cfb ratio while integrating phase. Am I right?
Therefore, I considered to apply a current buffer to reduce...
Hi, schmitt.
To begin with, thank you for your sincere advice.
I have some questions about your advice.
First, I wonder what role the parallel resistor used in the integrator.
Also, I want to know if 10~20 mega resistors can be integrated in CMOS integrated circuits.
Hi, Klaus.
To begin with, thank you for your sincere advice.
I think it is necessary to explain the application that uses this integrator.
In this application, the integrator's absolute output is used and the repeat deviation(difference) of the output is one of the important performance.
For...
Hello. I have a question about ‘Current integrator’s input noise’.
I use a typical current integrator structure using single-ended amp, switch and capacitor. (left fig.)
The thing is if external noise is induced in the ‘Current input (-)’ or ‘VREF node (+)’, the integrator output fluctuate...
I need the 16V for other circuitry. And it's not easy to use additional supply. (application environment, limited pad)
I will try to use a internal local supply.
Again, thank you! erikl.
Thank you, erikl.
I missed HV supply condition. It's about 16V.
So it is difficult to meet the HV amplifier DC op.
Do I need to use a local supply?(16V to 2.5V, using internal LDO)
I design the 10bit 10MS/s SHA that can ‘High voltage to Low voltage Scale down’ functionally.
High voltage input = 1V ~ 5V
Low voltage output = 0.5V ~ 1.5V
I think SHA will be designed with High voltage device. And then it is concerned the HV SHA output range.
Is it possible to design High...
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