Graham2107
Member
I am using a Microchip MCP602 to buffer and filter, with unity gain, for a 0-5Vdc clean DC input.
According to the spec sheet the out should swing Vss+100mV and Vdd-100mV but for a +5Vdc input I get only 4.25Vdc output. Range 0-4.25Vdc works 100%, above that is flat at 4.25Vdc.
I am using 0u1 across the IC and have tried others from a new batch of IC's with the same results. I have checked for noise and nothing is apparent,
What is going wrong here?
According to the spec sheet the out should swing Vss+100mV and Vdd-100mV but for a +5Vdc input I get only 4.25Vdc output. Range 0-4.25Vdc works 100%, above that is flat at 4.25Vdc.
I am using 0u1 across the IC and have tried others from a new batch of IC's with the same results. I have checked for noise and nothing is apparent,
What is going wrong here?