LTC1540
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LTC1540

Nanopower Comparator with Reference

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Info: : PRODUCTION tooltip
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Part Details
Part Models 12
1ku List Price Starting From $2.35
Features
  • Ultralow Quiescent Current: 0.3µA Typ
  • Reference Output Drives 0.01µF Capacitor
  • Adjustable Hysteresis
  • Available in 3mm × 3mm × 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
Additional Details
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The LTC1540 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 × 3mm low profile (0.8mm) dual fine-pitch leadless package (DFN).

Applications

  • Battery-Powered System Monitoring
  • Threshold Detectors
  • Window Comparators
  • Oscillator Circuits
Part Models 12
1ku List Price Starting From $2.35

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC1540CDD#PBF
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LTC1540CS8#PBF
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LTC1540CS8#TRPBF
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LTC1540IDD#PBF
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LTC1540IDD#TRPBF
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LTC1540IMS8#PBF
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LTC1540IMS8#TRPBF
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LTC1540IS8#PBF
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Product Lifecycle

PCN

Feb 3, 2020

- 20_0128

Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC

LTC1540CMS8#PBF

PRODUCTION

LTC1540CMS8#TRPBF

PRODUCTION

LTC1540IMS8#PBF

PRODUCTION

LTC1540IMS8#TRPBF

PRODUCTION

Dec 14, 2023

- 22_0255

Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2)

Jun 16, 2021

- 21_0026

Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM

LTC1540CS8#PBF

PRODUCTION

LTC1540CS8#TRPBF

PRODUCTION

LTC1540IS8#PBF

PRODUCTION

LTC1540IS8#TRPBF

PRODUCTION

Oct 12, 2022

- 22_0255

Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2)

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Feb 3, 2020

- 20_0128

arrow down

Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC

LTC1540CMS8#PBF

PRODUCTION

LTC1540CMS8#TRPBF

PRODUCTION

LTC1540IMS8#PBF

PRODUCTION

LTC1540IMS8#TRPBF

PRODUCTION

Dec 14, 2023

- 22_0255

arrow down

Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2)

Jun 16, 2021

- 21_0026

arrow down

Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM

LTC1540CS8#PBF

PRODUCTION

LTC1540CS8#TRPBF

PRODUCTION

LTC1540IS8#PBF

PRODUCTION

LTC1540IS8#TRPBF

PRODUCTION

Oct 12, 2022

- 22_0255

arrow down

Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2)

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

Tools & Simulations

Tools & Simulations 1

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.

Reference Designs

Reference Designs 1

Figure 1. EVAL-CN0536-ARDZ Block Diagram

Geiger Counter with Adjustable High Voltage Power Supply

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