Linear - Comparators

Part Number	Description / PDF	Quantity
LMV331IDCKRG4 Texas Instruments	IC GP LV COMPARATOR SC70-5	0
LMV762QMMX/NOPB Texas Instruments	IC COMP PREC W/P-POP LV 8VSSOP	0
LMV7219M5X/NOPB Texas Instruments	IC COMPARATOR 2.7V-5V RR SOT23-5	2469
LMH7322SQE/NOPB Texas Instruments	IC COMP DUAL 700PS RSPECL 24WQFN	555
LMC6762BIMX Texas Instruments	IC COMP DUAL MICRPWR CMOS 8-SOIC	0
LM339APW Texas Instruments	IC QUAD DIFF COMPARATOR 14-TSSOP	1715
LMV7275IDCKRQ1 Texas Instruments	IC COMP SGL 1.8V R-R INP SC70	4037
TLV4011QDCKRQ1 Texas Instruments	AUTOMOTIVE SMALL-SIZE COMPARATOR	2950
LP311D Texas Instruments	IC DIFF COMPARATOR 8-SOIC	191
TLC372MDREP Texas Instruments	IC DUAL DIFF COMP LINCMOS 8-SOIC	724
TLC372IP Texas Instruments	IC DUAL DIFF COMP 8-DIP	678
LM393PWRG3 Texas Instruments	LM393 DUAL DIFFERENTIAL COMPARAT	63085
TL712CDG4 Texas Instruments	IC DIFF COMPARATOR 8-SOIC	0
LM293PE4 Texas Instruments	LM293 DUAL DIFFERENTIAL COMPARAT	4500
TLV4041R5DBVR Texas Instruments	LOW-POWER COMPARATOR WITH REFERE	2556
TLV7041DCKT Texas Instruments	SMALL SIZE, NANO POWER, LOW VOLT	8498
LM311M/NOPB Texas Instruments	IC VOLTAGE COMPARATOR 8-SOIC	2312
LM393APWR Texas Instruments	IC DUAL DIFF COMPARATOR 8-TSSOP	20589
TL3016CD Texas Instruments	IC HS LP COMP 8-SOIC	913
LM615IM Texas Instruments	COMPARATOR	5393

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

Type	Functional Features	Application Examples
General-Purpose Comparators	Basic voltage comparison with moderate speed and accuracy	Simple threshold detection in appliances
Precision Comparators	Low offset voltage and high accuracy	Instrumentation and measurement equipment
High-Speed Comparators	Sub-nanosecond response times	RF signal processing and oscilloscopes
Low-Power Comparators	Ultra-low quiescent current	Battery-powered IoT devices
Window Comparators	Detect if input voltage falls within a defined range	Power 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

Parameter	Description	Importance
Input Offset Voltage	Maximum voltage difference required to switch output	Determines comparison accuracy
Propagation Delay	Time between input change and output response	Critical for high-speed applications
Supply Voltage Range	Operating voltage range (e.g., 2.7V-36V)	Dictates system power design
Power Consumption	Quiescent current under active/idle conditions	Battery life optimization
Hysteresis	Voltage margin to prevent oscillation near thresholds	Improves 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

Manufacturer	Representative Product	Key Features
TI (Texas Instruments)	LM393	Dual comparator, 2.0V-36V supply, 1.3 A quiescent current
STMicroelectronics	TLV3201	1.8V supply, 40ns propagation delay
Analog Devices	AD8561	Single-supply, 7ns response time
ON Semiconductor	NCS2250	Zero-drift architecture, 10 V offset

7. Selection Guidelines

Speed Requirements: Match propagation delay to system clock rates
Accuracy Needs: Select offset voltage <1mV for precision sensing
Power Constraints: Choose nano-power variants for portable devices
Environmental Factors: Consider temperature-rated parts (-40 C to +125 C)
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