SneaKSz
Member
Hi guys,
I"m having a little difficulty with using the mosfet as a switch. I want it to let trough to the negative input of a opamp ( inverting opamp mode).
VoDAC -------------mosfet -------------- R - opamp
The gate will be driven from a PIC (0 or 5V)and VoDAC will go from 0V to 2V. I tried the P channel enhanced mode with low gate threshold but when I higher the VoDAC ( gate is 5V), the source of the mosfet lowers negative...
Someone has any idea of a mosfet with low Vds and will work properly when I switch on the gate?
Kind regards
I"m having a little difficulty with using the mosfet as a switch. I want it to let trough to the negative input of a opamp ( inverting opamp mode).
VoDAC -------------mosfet -------------- R - opamp
The gate will be driven from a PIC (0 or 5V)and VoDAC will go from 0V to 2V. I tried the P channel enhanced mode with low gate threshold but when I higher the VoDAC ( gate is 5V), the source of the mosfet lowers negative...
Someone has any idea of a mosfet with low Vds and will work properly when I switch on the gate?
Kind regards
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