Linear - Comparators

Part Number	Description / PDF	Quantity
TLV4062DRYR Texas Instruments	LOW-POWER COMPARATOR	4945
TLV2354IPW Texas Instruments	TLV2354 QUAD LOW VOLTAGE LINCMOS	22409
TL712CPWR Texas Instruments	TL712 SINGLE DIFFERENTIAL COMPAR	98000
LM139ADG4 Texas Instruments	IC QUAD DIFF COMPARATOR 14-SOIC	257
TLV6710DDCT Texas Instruments	TLV6710 MICROPOWER, 36V WINDOW C	737
TLV3701CDBVTG4 Texas Instruments	IC COMPARATR NANOPWR P-P SOT23-5	0
TLC339IPW Texas Instruments	IC DIFF COMPARATOR QUAD 14-TSSOP	83420
TLV7011DBVR Texas Instruments	VOLTAGE COMPARATOR	2320
TL3016ID Texas Instruments	IC HS LP COMP 8-SOIC	38
5962-9688201Q2A Texas Instruments	TLV2354M LINCMOS QUAD LOW-VOLTAG	80
LM2903BQDRQ1 Texas Instruments	36V JI.3 DUAL AUTO COMPARATOR	301
LP311PG4 Texas Instruments	IC LP STRB DIFF COMPARATR 8-DIP	0
LMC6772AIMMX/NOPB Texas Instruments	IC COMP DUAL MICRPWR CMOS 8VSSOP	1699
LM393BIPWR Texas Instruments	DUAL COMMERCIAL GRADE STANDARD C	1598
TLV6700QDDCRQ1 Texas Instruments	AUTOMOTIVE LOW-POWER WINDOW COMP	2850
TLV3701QDBVRQ1 Texas Instruments	IC COMPARATR NANOPWR P-P SOT23-5	10646
LM311PWG4 Texas Instruments	IC DIFF COMPARATOR STROBE 8TSSOP	0
LM2901PW Texas Instruments	IC DIFF COMPARATOR QUAD 14-TSSOP	1906
TLC339IN Texas Instruments	IC DIFF COMPARATOR QUAD 14-DIP	264
TLC393IDRRB Texas Instruments	DUAL COMPARATOR	2023

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