Linear - Comparators

Part Number	Description / PDF	Quantity
MAX9691EPA+ Maxim Integrated	IC COMP SNGL ECL 8DIP	4334250
MAX9041AESA+ Maxim Integrated	IC COMPARATOR SNGL 8-SOIC	1597800
MAX967ESA+ Maxim Integrated	IC COMPARATOR R-R 8-SOIC	26514600
MAX9017AEKA/V+T Maxim Integrated	IC COMPARATOR 1.8V NANO SOT23-8	22500
MAX9095ASD+ Maxim Integrated	IC COMPARATOR GP DUAL 14SOIC	34951700
MAX9691EUA+ Maxim Integrated	IC COMP SNGL ECL 8UMAX	77850
MAX9022AUA+ Maxim Integrated	IC COMPARATOR DUAL 8-UMAX	170650
MAX971CSA+ Maxim Integrated	IC COMP SNGL OPEN DRAIN LP 8SOIC	17600
MAX9140AAUK+T Maxim Integrated	IC COMP SNGL R-R INPUT SOT23-5	50812500
MAX40001AUT12+T Maxim Integrated	IC COMPARATOR GP PUSH PULL 6WLP	27500
MAX992EKA+T Maxim Integrated	IC COMPARATOR R-R SOT23-8	1364
MAX931CSA+ Maxim Integrated	IC COMP SNGL LOW PWR W/REF 8SOIC	8283200
MAX998EUT+T Maxim Integrated	IC COMP SNGL HI-SPEED LP SOT23-6	5007
MAX982CSA+T Maxim Integrated	IC COMPARATOR OD 8-SOIC	0
MAX9201EUE+ Maxim Integrated	IC COMPARATOR LP 16-TSSOP	362768
MAX990ESA+ Maxim Integrated	IC COMPARATOR R-R 8-SOIC	40010500
MAX973ESA+ Maxim Integrated	IC COMPARATOR OD 8-SOIC	793700
MAX966EUA+ Maxim Integrated	IC COMPARATOR R-R 8-UMAX	2501550
MAX9092AUA+T Maxim Integrated	IC COMPARATOR GP DUAL 8UMAX	27500
MAX9075EXK+T Maxim Integrated	IC COMPARATOR SNGL SC70-5	19285000

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