Other Parts Discussed in Thread: LM311, LMH2110, TLV3601, TLV3201, TLV3501
Hi - I am using LMH2110TMEVAL board to measure the power from a received wireless signal. The voltage measure is about 0.6V which is expected.
The output is then the inverting input for LM311 to be compare to the noninverting input of LM311 which is 0.4V. The output of the LM311 (collector to 5V and emitter to a resistor and then to ground). LM311 is not comparing properly: output from emitter pin not as expected.
Then, replaced the LMH2110TMEVAL signal for the inverting input with a voltage signal from a power supply with 0.6V and very low current, and the output of the described circuit is as expected.
What am I missing? Why isn't LMH2110TMETAL performing as expected? Checked the datasheet of LMH2110 and does not seem that I am missing something. Tried added a opamp based buffer between LMH2110TMEVAL and the LM311 but didn't work.
Thanks in advance for any help you could provide,
Gus
