LTC1540-Nanopower Comparator w

LTC1540描述
The LTC®1540 is an ultralow power, single comparator with built-in reference. The comparator’s features include less than 0.6µA supply current over the commercial temperature range, a 1.182V ±2% reference, programmable hysteresis and TTL/CMOS outputs that sink and source current. The reference output can drive a bypass capacitor of up to 0.01µF without oscillation.

The comparator operates from a single 2V to 11V supply or a dual ±1V to ±5.5V supply. Comparator hysteresis is easily programmed by using two resistors and the HYST pin. Each comparator’s input operates from the negative supply to within 1.3V of the positive supply. The comparator output stage can continuously source up to 40mA. By eliminating the cross-conducting current that normally occur when the comparator changes logic states, power supply glitches are eliminated.

The LTC1540 is available in the 8-pin MSOP and SO packages. For space limited applications, the LTC1540 is available in a 3mm x 3mm low profile (0.8mm) dual finepitch leadless package (DFN).

LTC1540特点
Ultralow Quiescent Current: 0.3µA Typ 
Reference Output Drives 0.01µF Capacitor 
Adjustable Hysteresis 
Available in 3mm x 3mm x 0.8mm DFN Package 
Wide Supply Range: 2V to 11V 
Input Voltage Range Includes the Negative Supply 
Reference Output Sources Up to 1mA 
TTL/CMOS Compatible Outputs 
60µs Propagation Delay with 10mV Overdrive 
No Crowbar Current 
40mA Continuous Source Current 
Pin Compatible with LTC1440, MAX921, MAX931 
Typical Application

LTC1540封装
MSOP-8, SO-8, DFN-8

LTC1540应用
Battery-Powered System Monitoring 
Threshold Detectors 
Window Comparators 
Oscillator Circuits