I'm using MCP6044 Quad OpAmp (Datasheet) for battery powered PIR sensor, it works fine but draws too much current. When I plug it to 3V source (VDD: 3V, VSS: GND) with no load it draws around 550uA, where I suppose it should be around 3uA (600nA/amp). Let me know if it's something wrong with chip or I do something incorrectly.

Update: There's schematic I used: enter image description here

  • 7
    \$\begingroup\$ schematic would help \$\endgroup\$ Jul 27, 2020 at 20:06
  • 4
    \$\begingroup\$ Also, are you actually measuring that low a current properly? \$\endgroup\$
    – DKNguyen
    Jul 27, 2020 at 20:06
  • \$\begingroup\$ What temperature is the amplifier? \$\endgroup\$
    – Voltage Spike
    Jul 27, 2020 at 20:22
  • 2
    \$\begingroup\$ Are there any inputs or outputs connected, or are just floating and there really is only power pins connected? \$\endgroup\$
    – Justme
    Jul 27, 2020 at 20:27
  • 1
    \$\begingroup\$ Temperature of amplifier is around 27 C after 5 min of working \$\endgroup\$
    – Arksu
    Jul 28, 2020 at 9:08


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