Dual CMOS op-amp in a 10-pin UTQFN
The MAX9638AVB+T is a dual CMOS operational amplifier from Analog Devices, packaged in a 10-UTQFN (1.4x1.8 mm) footprint. Each of the two channels draws 36 µA supply current, so the total quiescent draw for both amplifiers is 72 µA — a figure that keeps the part viable in battery-powered sensor interfaces and portable instrumentation where the op-amp must run continuously.
Rail-to-rail output and drive capability
The output swings rail-to-rail and can source or sink 55 mA per channel. That drive current is enough to charge the input capacitance of a downstream ADC sample-and-hold or to drive a moderate resistive load directly, without an external buffer stage.
Package, footprint, and procurement posture
Housed in a 10-UFQFN (0.55 mm max seated height) with a 1.4x1.8 mm body, the part demands a fine-pitch PCB layout. Analog Devices lists the MAX9638AVB+T as active in production and ROHS3 compliant. It is offered in Tape & Reel (TR) and Cut Tape (CT) options for volume or prototype procurement.