LTC1540 - Nanopower Comparator with Reference

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).

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
典型应用
LTC1540 Typical Application
LTC1540 Typical Application
应用
  • Battery-Powered System Monitoring
  • Threshold Detectors
  • Window Comparators
  • Oscillator Circuits
封装信息
LTC1540 Package Drawing
LTC1540 Package Drawing
LTC1540 Package Drawing
Order Information 订购型号
器件型号封装温度价格 (以 1 ~ 99 片为批量)价格 (以 1000 片为批量) *
LTC1540CDD#PBF3x3 DFN-8C$2.59$1.90
LTC1540CDD#TRPBF3x3 DFN-8C$1.95
LTC1540CMS8#PBFMS-8C$2.15$1.80
LTC1540CMS8#TRPBFMS-8C$1.86
LTC1540CS8#PBFSO-8C$1.90$1.60
LTC1540CS8#TRPBFSO-8C$1.66
LTC1540IDD#PBF3x3 DFN-8I$3.32$2.44
LTC1540IDD#TRPBF3x3 DFN-8I$2.49
LTC1540IMS8#PBFMS-8I$3.14$2.34
LTC1540IMS8#TRPBFMS-8I$2.39
LTC1540IS8#PBFSO-8I$2.25$1.85
LTC1540IS8#TRPBFSO-8I$1.91
演示电路板
器件型号描述价格
DC600ALTC1540CDD | Nano-power Voltage Comparator with Built In Voltage Reference in DFN Package$50.00
数据表
设计要点
可靠性数据
产品选择卡
LT Journal
CAD 符号
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LTC1540 Footprints and Symbols