The SGM8140 is a PIR sensor and vibration sensor analog front end which consists of 2 independent building block circuits. One is a dual rail-to-rail input and output operational amplifier, and the other is an ultra-low power comparator. Both the operational amplifier and the comparator have been specifically designed to operate over a wide range of voltages from 1.4V to 5.5V. The SGM8140 only has 1.1μA working current, so it is ideal for use in a variety of battery-powered applications.

The operational amplifier circuit is guaranteed to operate with a single supply voltage as low as 1.4V. It has a gain-bandwidth product of 5kHz (TYP) and is unity-gain stable. These specifications make this operational amplifier appropriate for low frequency applications, such as battery current monitoring and sensor conditioning.

Featuring a push-pull output stage, the SGM8140’s comparator allows for operation with absolute minimum power consumption when driving any capacitive or resistive load.

The SGM8140 is specified for the -40℃ to +85℃ industrial temperature range. The SGM8140 is available in a Green TQFN-4×4-16L package.