Hi,
I'm trying to build my own PIR sensor for battery powered device but I have problem with high current generated by Op Amp. I've built circuit based on:
but instead of TLV8544 I used MCP6044 Op Amp (600nA/amplifier). The problem is that it should consume less than 10uA in theory but mine consume about 550uA. PIR sensor works fine though. If you have some experience with nanopower-opamp or see some flaws with schematic which could cause this problem let me know.
Thanks in advance