LTC1440 - 具有基准的超低功率单/双通道比较器

The LTC®1440/LTC1441/LTC1442 are ultralow power single and dual comparators with built-in references. The comparators feature less than 3.7µA supply current over temperature (LTC1440), a 1.182V ±1% reference, programmable hysteresis (LTC1440/LTC1442) 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 comparators operate from a single 2V to 11V supply or a dual ±1V to ±5.5V supply (LTC1440). Comparator hysteresis is easily programmed by using two resistors and the HYST pin (LTC1440/LTC1442). 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 happens when the comparator changes logic states, the power supply glitches are eliminated.

The LTC1440 is available in 8-pin PDIP, SO, MSOP and DFN packages. The LTC1441/LTC1442 are available in 8-pin PDIP and SO packages.

特点
  • Ultralow Quiescent Current: 2.1µA Typ (LTC1440)
  • Reference Output Drives 0.01µF Capacitor
  • Adjustable Hysteresis (LTC1440/LTC1442)
  • Wide Supply Range: Single: 2V to 11V Dual: ±1V to ±5.5V
  • Input Voltage Range Includes the Negative Supply
  • TTL/CMOS Compatible Outputs
  • 12µs Propagation Delay with 10mV Overdrive
  • No Crowbar Current
  • 40mA Continuous Source Current
  • Pin Compatible Upgrades for MAX921/922/923
  • 3mm x 3mm x 0.75mm DFN Package (LTC1440)
典型应用
LTC1440 Typical Application
LTC1440 Typical Application
应用
  • Battery-Powered System Monitoring
  • Threshold Detectors
  • Window Comparators
  • Oscillator Circuits
封装信息
LTC1440 Package Drawing
LTC1440 Package Drawing
LTC1440 Package Drawing
LTC1440 Package Drawing
LTC1440 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) *
LTC1440CDD#PBF3x3 DFN-8C$2.36$1.65
LTC1440CDD#TRPBF3x3 DFN-8C$1.75
LTC1440CMS8#PBFMS-8C$2.15$1.65
LTC1440CMS8#TRPBFMS-8C$1.71
LTC1440CN8#PBFN-8C$1.85$1.45
LTC1440CS8#PBFSO-8C$1.85$1.45
LTC1440CS8#TRPBFSO-8C$1.51
LTC1440IDD#PBF3x3 DFN-8I$2.64$1.85
LTC1440IDD#TRPBF3x3 DFN-8I$1.95
LTC1440IMS8#PBFMS-8I$2.64$1.85
LTC1440IMS8#TRPBFMS-8I$1.91
LTC1440IN8#PBFN-8I$2.20$1.70
LTC1440IS8#PBFSO-8I$2.20$1.70
LTC1440IS8#TRPBFSO-8I$1.76
数据表
规格变更通知书
应用指南
设计要点
可靠性数据
产品选择卡
LT Journal
CAD 符号
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