Ultralow Power Dual Comparators with Reference

The LTC1841 is an ultralow power dual comparator featuring less than 5.7µA supply current over temperature, a 1.182V ±1% reference, programmable hysteresis and open-drain outputs that sink current. The reference output can drive a bypass capacitor of up to 0.01µF without oscillation.

The LTC1841 operates from a single 2V to 11V supply or a dual ±1V to ±5.5V supply. The comparator inputs operate from the negative supply to within 1.3V of the positive supply. The comparator outputs can typically sink greater than 20mA. By eliminating the cross-conduction current that normally happens when the comparators change logic states, power supply glitches are eliminated.

The LTC1841 are available in an SO-8 package.

Applications

* Battery-Powered System Monitoring

* Threshold Detectors

* Window Comparators

* Oscillator Circuits

* Ultralow Quiescent Current: 3.5µA Typ

* Open-Drain Outputs Typically Sink Greater Than 20mA

* Wide Supply Range: (LTC1841)

* Single: 2V to 11V

* Dual: ±1V to ±5.5V

* Input Voltage Range Includes the Negative Supply

* 12µs Propagation Delay with 10mV Overdrive

* No Current Spike When Switching