Linear - Comparators

Image Part Number Description / PDF Quantity Rfq
PM111J/883C

PM111J/883C

Analog Devices, Inc.

COMPASRSATOR

3158

JM38510/11201BCA

JM38510/11201BCA

Analog Devices, Inc.

MIL GRADE PM111S

0

MAX9031AUK+G55

MAX9031AUK+G55

Analog Devices, Inc.

LOW-COST, ULTRA-SMALL, SINGLE-SU

1492

LT1016CN8

LT1016CN8

Analog Devices, Inc.

IC COMPARATOR 10NS HI-SPEED 8DIP

0

CMP04FS-REEL

CMP04FS-REEL

Analog Devices, Inc.

IC COMP QUAD LOW PWR 14SOIC

0

LT111AH

LT111AH

Analog Devices, Inc.

IC VOLTAGE COMPARATOR TO-5

0

ADCMP356YKS-REEL7

ADCMP356YKS-REEL7

Analog Devices, Inc.

IC COMP/REF PP ACTIVE HI SC70-4

0

LTC1042MJ8

LTC1042MJ8

Analog Devices, Inc.

IC WINDOW COMPARATOR CERDIP

0

LT1714IGN

LT1714IGN

Analog Devices, Inc.

IC COMP R-RINOUT DUAL 16-SSOP

0

LT1719IS8#TR

LT1719IS8#TR

Analog Devices, Inc.

IC COMP R-R SINGLE 4.5NS 8SOIC

0

AD8564AR-REEL7

AD8564AR-REEL7

Analog Devices, Inc.

IC COMP QUAD 7NS ULT-FAST 16SOIC

0

HMC676LC3C

HMC676LC3C

Analog Devices, Inc.

IC COMPARATOR RSECL 16SMD

0

AD790JR-REEL

AD790JR-REEL

Analog Devices, Inc.

IC COMPARATOR PREC W/LATCH 8SOIC

0

LT1011AMJ8

LT1011AMJ8

Analog Devices, Inc.

IC VOLTAGE COMPARATOR CERDIP

0

LT1015CN8

LT1015CN8

Analog Devices, Inc.

IC RECEIVER DUAL LINE HISPD 8DIP

0

LT1671IS8

LT1671IS8

Analog Devices, Inc.

IC COMPARATOR 60NS LOW PWR 8SOIC

0

LT1116CN8

LT1116CN8

Analog Devices, Inc.

IC COMPARATOR 12NS SINGLE 8-DIP

0

LTC6702CDC

LTC6702CDC

Analog Devices, Inc.

IC POWER MANAGEMENT

0

LT1715IMS#TR

LT1715IMS#TR

Analog Devices, Inc.

IC COMPARATOR 150MHZ DUAL 10MSOP

0

LT1713IMS8

LT1713IMS8

Analog Devices, Inc.

IC COMP R-R IN/OUT SINGLE 8-MSOP

0

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
RFQ BOM Call Skype Email
Top