1MHz rail-to-rail op-amp draws only 55μA

Microchip’s MCP6411 operational amplifier can operate with a single supply voltage as low as 1.7V, while drawing 55μA quiescent current (max).


Called MCP6411, input offset is ±1.0mV max, and both input and output operate rail-to-rail.

Compensation means it is unity gain stable, and it has a gain bandwidth product of 1 MHz (typ).

“The MCP6411 has enhanced EMI protection to minimise any electromagnetic interference from external sources,” said Microchip”. “This feature makes it well suited for EMI sensitive applications such as power lines, radio stations and mobile communications.”

Packaging is SC70-5 or SOT-23-5 packages, and the CMOS devices are specified to operate across -40 to +125°C.

Battery powered applications are foreseen, particularly medical ones such as patient monitors, blood pressure meters, pulse oximeters, digital thermometers and glucose meters.

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