Linear - Comparators

Image Part Number Description / PDF Quantity Rfq
HMC674LC3C

HMC674LC3C

Analog Devices, Inc.

IC COMPARATOR RSPECL 16SMD

7

ADCMP350YKS-REEL7

ADCMP350YKS-REEL7

Analog Devices, Inc.

ADCMP350 - COMPARATOR & REFERENC

32400

ADCMP607BCPZ-WP

ADCMP607BCPZ-WP

Analog Devices, Inc.

IC COMP TTL/CMOS 1CHAN 12-LFCSP

81

AD8468WBKSZ-R7

AD8468WBKSZ-R7

Analog Devices, Inc.

IC COMPARATOR TTL/CMOS SC70-6

1657

LT6700CS6-2#TRMPBF

LT6700CS6-2#TRMPBF

Analog Devices, Inc.

IC COMP DUAL 400MV REF TSOT23-6

10565

AD8465WBCPZ-R7

AD8465WBCPZ-R7

Analog Devices, Inc.

IC COMPARATOR LVDS R-R 12LFCSP

923

AD96685BR-REEL

AD96685BR-REEL

Analog Devices, Inc.

COMPARATOR

7500

LT1016CS8#TRPBF

LT1016CS8#TRPBF

Analog Devices, Inc.

IC COMPARATOR 10NS HI-SPD 8-SOIC

4113

LTC6752HUD-3#TRPBF

LTC6752HUD-3#TRPBF

Analog Devices, Inc.

IC COMPARATOR 280MHZ 12QFN

0

ADCMP562BRQZ

ADCMP562BRQZ

Analog Devices, Inc.

IC COMPARATOR PECL DUAL 20-QSOP

307

LT6703CDC-2#TRPBF

LT6703CDC-2#TRPBF

Analog Devices, Inc.

IC COMPARATOR 400MV REF 3-DFN

0

LT6703HVIS5-2#TRMPBF

LT6703HVIS5-2#TRMPBF

Analog Devices, Inc.

IC COMPARATOR 400MV REF TSOT23-5

20583

MAX903CPA

MAX903CPA

Analog Devices, Inc.

LOW-POWER VOLTAGE COMPARATOR

0

LT1711IMS8#TRPBF

LT1711IMS8#TRPBF

Analog Devices, Inc.

IC COMP R-RINOUT SINGLE 8-MSOP

2233

MAX902CPD

MAX902CPD

Analog Devices, Inc.

LOW-POWER VOLTAGE COMPARATOR

944

LT1011CN8#PBF

LT1011CN8#PBF

Analog Devices, Inc.

IC VOLTAGE COMPARATOR 5V 8-DIP

292

LTC1842CS8#TRPBF

LTC1842CS8#TRPBF

Analog Devices, Inc.

IC COMP ULTLOPWR W/REF DL 8SOIC

0

LT1715IMS#PBF

LT1715IMS#PBF

Analog Devices, Inc.

IC COMPARATOR 150MHZ DUAL 10MSOP

1571

ADCMP341YRJZ-REEL7

ADCMP341YRJZ-REEL7

Analog Devices, Inc.

IC COMPARATOR DUAL OD SOT23-8

3846

LT1394CS8#TRPBF

LT1394CS8#TRPBF

Analog Devices, Inc.

IC COMPARATOR LOW PWR 7NS 8-SOIC

1361

Linear - Comparators

1. Overview

Linear comparators are analog integrated circuits designed to compare two voltage signals and output a digital signal indicating which voltage is higher. They serve as fundamental components in electronic systems, enabling decision-making processes in applications ranging from voltage level detection to waveform shaping. Their importance spans industries such as industrial automation, consumer electronics, automotive systems, and medical devices, where precise signal comparison is critical.

2. Main Types and Functional Classification

TypeFunctional FeaturesApplication Examples
General-Purpose ComparatorsBasic voltage comparison with moderate speed and accuracySimple threshold detection in appliances
Precision ComparatorsLow offset voltage and high accuracyInstrumentation and measurement equipment
High-Speed ComparatorsSub-nanosecond response timesRF signal processing and oscilloscopes
Low-Power ComparatorsUltra-low quiescent currentBattery-powered IoT devices
Window ComparatorsDetect if input voltage falls within a defined rangePower supply monitoring systems

3. Structure and Composition

A linear comparator typically consists of:

  • Differential Amplifier Stage: Amplifies the voltage difference between inputs
  • Reference Voltage Circuit: Provides stable threshold voltages
  • Output Stage: Generates rail-to-rail digital output (e.g., CMOS, TTL-compatible)
  • Protection Circuits: ESD protection and overvoltage tolerance

Common package types include SOIC, SOT-23, and TSSOP. Advanced designs integrate hysteresis circuits or voltage references.

4. Key Technical Specifications

ParameterDescriptionImportance
Input Offset VoltageMaximum voltage difference required to switch outputDetermines comparison accuracy
Propagation DelayTime between input change and output responseCritical for high-speed applications
Supply Voltage RangeOperating voltage range (e.g., 2.7V-36V)Dictates system power design
Power ConsumptionQuiescent current under active/idle conditionsBattery life optimization
HysteresisVoltage margin to prevent oscillation near thresholdsImproves noise immunity

5. Application Areas

  • Industrial: PLC input modules, motor control systems
  • Consumer: Smartphone battery level indicators
  • Automotive: Battery management in EVs, sensor signal conditioning
  • Medical: ECG signal analysis equipment
  • Telecommunications: Optical receiver signal detection

6. Leading Manufacturers and Products

ManufacturerRepresentative ProductKey Features
TI (Texas Instruments)LM393Dual comparator, 2.0V-36V supply, 1.3 A quiescent current
STMicroelectronicsTLV32011.8V supply, 40ns propagation delay
Analog DevicesAD8561Single-supply, 7ns response time
ON SemiconductorNCS2250Zero-drift architecture, 10 V offset

7. Selection Guidelines

  1. Speed Requirements: Match propagation delay to system clock rates
  2. Accuracy Needs: Select offset voltage <1mV for precision sensing
  3. Power Constraints: Choose nano-power variants for portable devices
  4. Environmental Factors: Consider temperature-rated parts (-40 C to +125 C)
  5. Integration Level: Opt for devices with built-in references/hysteresis

8. Industry Trends

  • Miniaturization: WLCSP packages enabling wearable device integration
  • Energy Efficiency: Sub-1 A quiescent current devices for always-on systems
  • Higher Integration: Comparators with ADC interfaces and digital calibration
  • Broadband Operation: GHz-range comparators for 5G infrastructure
  • Smart Sensing: Embedded AI for adaptive threshold control
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