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描述

The LTC8725/LTC8727 and LTC8726 are tiny, single- and dual- channel comparators with open-drain output that offer the ultimate combination of high speed (66 ns propagation delay) and very low power consumption (22 μA), available in extremely small packages with features such as rail-to-rail inputs, low offset voltage (0.8 mV), large output drive current, and a wide range of supply voltages from 1.7 V to 5.5 V. The devices are very easy to implement in a wide variety of applications where require critical response time,power-sensitive, low-voltage, and/or tight board space.

The output limits supply current surges and dynamic power consumption while switching.The open-drain output of the LTC8725/8726/8727 can be used as a level-shifter using a pull-up resistor. It can also be used as a wired-OR logic. All input and output pins can tolerate a continuous short-circuit fault condition to either rail. Internal hysteresis ensures clean output switching, even with slow-moving input signals.

The LTC8725/8727 (single) is available in both SOT23-5L and SC70-5L, the LTC8726 (dual) is offered in DFN-8L, SOIC-8L and MSOP-8L packages. The quad-channel LTC8728 is offered in both SOIC-14L and TSSOP-14L packages. All devices are rated over -40 ℃ to +125 ℃ industrial temperature range.
 

优势和特点

  • Micro-power Operating Current (22 μA) Preserves Battery Power
  • Fast 66 ns Propagation Delay (100-mV Overdrive)
  • Single 1.7 V to 5.5 V Supply Voltage Range
– Can be Powered From the Same 1.8V/2.5V/3.3V/5V System Rails
  • Rail-to-Rail Input
  • Open-Drain Output Current Drive: 30 mA Typically at 5V Supply
  • Internal Hysteresis for Clean Switching
  • Internal RF/EMI Filter
  • Operating Temperature Range: -40 ℃ to +125 ℃

应用

  • IR Receivers
  • Consumer Accessories
  • Handsets, Tablets and Notebooks
  • Portable and Battery-Powered Devices
  • Threshold Detectors and Discriminators
  • Alarms and Monitoring Circuits
  • Zero-Crossing Detectors
  • Window Comparators
  • Level Translators
  • Line Receivers


 

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