Linear - Comparators

Part Number	Description / PDF	Quantity
AD790JR Analog Devices, Inc.	COMPARATOR	234
HMC674LC3CTR Analog Devices, Inc.	10 GHZ LATCHED COMPARATOR WITH R	194
LTC6752IS5#TRPBF Analog Devices, Inc.	IC COMP R-R CMOS 280MHZ TSOT23-5	0
HMC674LC3CTR-R5 Analog Devices, Inc.	IC COMPARATOR RSPECL 16SMD	0
AD790JRZ-REEL Analog Devices, Inc.	IC COMPARATOR PREC HS 8-SOIC	0
LTC6752MPS5#TRMPBF Analog Devices, Inc.	IC COMP R-R CMOS 280MHZ 5SOT-23	625
ADCMP563BRQ Analog Devices, Inc.	COMPARATOR, 2 FUNC	8941
LT6700HDCB-3#TRMPBF Analog Devices, Inc.	IC COMP DUAL 400MV REF 6-DFN	0
ADCMP380-2ACBZ-RL7 Analog Devices, Inc.	ADCMP380 - ULTRA LOW CURRENT COM	2855
MAX923CUA Analog Devices, Inc.	SINGLE-SUPPLY COMPARATOR	4700
HMC874LC3C Analog Devices, Inc.	IC COMPARATOR RSPECL 16SMD	0
LTC1841IS8#TRPBF Analog Devices, Inc.	IC COMP ULTLOPWR W/REF DL 8SOIC	0
MAX984EPE+ Analog Devices, Inc.	MAX984 ULTRA-LOW-POWER, OPEN-DRA	324
LT1719CS6#TRPBF Analog Devices, Inc.	IC COMP R-RINOUT SINGLE SOT23-6	1470
LT6700MPS6-3#TRPBF Analog Devices, Inc.	IC COMP DUAL 400MV REF TSOT23-6	0
ADCMP581BCPZ-WP Analog Devices, Inc.	COMPARATOR, 10000UV OFFSET-MAX,	10366
LT6703CDC-2#TRMPBF Analog Devices, Inc.	IC COMPARATOR 400MV REF 3-DFN	2749
LT1017IS8#PBF Analog Devices, Inc.	IC COMPARATOR MICRPWR DUAL 8SOIC	6080
MAX9600EUP Analog Devices, Inc.	HIGH-SPEED COMPARATOR	5664
MAX995ESD-T Analog Devices, Inc.	RAIL-TO-RAIL I/O COMPARATOR	5000

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