Overview

Features and Benefits

  • Low Power: 450µA
  • Fast:
    • 60ns at 20mV Overdrive
    • 85ns at 5mV Overdrive
  • Low Offset Voltage: 0.8mV
  • Operates Off Single 5V or Dual ±5V Supplies
  • Input Common Mode Extends to Negative Supply
  • No Minimum Input Slew Rate Requirement
  • Complementary TTL Outputs
  • Inputs Can Exceed Supplies without Phase Reversal
  • Pin Compatible with LT1394, LT1016 and LT1116
  • Output Latch Capability
  • Available in 8-Lead MSOP and SO Packages

Product Details

The LT1671 is a low power 60ns comparator with complementary outputs and latch. The input common mode range extends from 1.5V below the positive supply down to the negative supply rail. Like the LT1394, LT1016 and LT1116, this comparator has complementary outputs designed to interface directly to TTL or CMOS logic. The LT1671 may operate from either a single 5V supply or dual ±5V supplies. Low offset voltage specifications and high gain allow the LT1671 to be used in precision applications.

The LT1671 is designed for improved speed and stability for a wide range of operating conditions. The output stage provides active drive in both directions for maximum speed into TTL, CMOS or passive loads with minimal cross-conduction current. Unlike other fast comparators, the LT1671 remains stable even for slow transitions through the active region, which eliminates the need to specify a minimum input slew rate.

The LT1671 has an internal, TTL/CMOS compatible latch for retaining data at the outputs. The latch holds data as long as the LATCH pin is held high. Device parameters such as gain, offset and negative power supply current are not significantly affected by variations in negative supply voltage.

Applications

  • High Speed A/D Converters
  • Zero-Crossing Detectors
  • Current Sense for Switching Regulators
  • Extended Range V/F Coverters
  • Fast Pulse Height/Width Discriminators
  • High Speed Triggers
  • Line Receivers
  • High Speed Sampling Circuits

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Tools & Simulations

LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

LTspice

Models for the following parts are available in LTspice:

LT1671

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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