600 nA per channel — the power budget's best friend
The Microchip MCP6044T-I/ST is a quad CMOS general-purpose op-amp that draws 600 nA per channel. The rail-to-rail output swing lets it drive an ADC input or a comparator without losing headroom at low supply voltages.
14 kHz gain-bandwidth — pick your signals carefully
The 14 kHz gain-bandwidth product and 0.003 V/µs slew rate tell you this is a DC-to-slow-signal part. It handles thermocouple conditioning, strain-gauge amplification, and photodiode transimpedance stages where the bandwidth stays below a few hundred hertz. It will not work for audio, PWM feedback loops, or any signal requiring fast edge reproduction — that is the trade-off for the 600 nA quiescent current.
Supply range 1.4 V to 6 V — single-cell to 5 V rail
The supply span from 1.4 V to 6 V covers single alkaline, two NiMH, or a regulated 3.3 V / 5 V rail. The input common-mode range includes ground, and the rail-to-rail output swings within a few millivolts of the rails at light loads. This wide compliance simplifies level-shifting between a 1.8 V sensor and a 3.3 V ADC.
The 14-TSSOP package saves board area while keeping the four amplifiers in a single footprint.