Quad op-amp with rail-to-rail output and precision input stage
The MAX40078AUD+ is a quad general-purpose operational amplifier from Analog Devices, built for signal conditioning, filtering, and data-acquisition front-ends. Input bias current sits at 0.3 pA and input offset at 30 µV, so it handles high-impedance sources like photodiode amplifiers or pH probes without excessive DC error. The four channels share a 2.2 mA supply current, keeping the thermal budget manageable in a 14-TSSOP package.
For dual-source planning, check the family's quad op-amp portfolio — pin-compatible alternatives exist within the same supply and bandwidth class, but no official second-source MPN is listed.