Linear - Comparators

Part Number	Description / PDF	Quantity
LT6700HS6-2#TRMPBF Analog Devices, Inc.	IC COMP DUAL 400MV REF TSOT23-6	704
LT6703CDC-3#TRPBF Analog Devices, Inc.	IC COMPARATOR 400MV REF 3-DFN	0
LTC6752IUD-3#PBF Analog Devices, Inc.	IC COMPARATOR 280MHZ 12QFN	4423
CMP402GSZ-REEL Analog Devices, Inc.	IC COMPARATOR LV 65NS 16SOIC	0
MAX9075EXK-T Analog Devices, Inc.	SINGLE-SUPPLY COMPARATOR	1490
ADCMP607BCPZ-R7 Analog Devices, Inc.	IC COMP TTL/CMOS 1CHAN 12-LFCSP	2100
ADCMP600BKSZ-REEL7 Analog Devices, Inc.	IC COMP TTL/CMOS 1CHAN SC70-5	19
ADCMP582BCPZ-R2 Analog Devices, Inc.	IC COMPARATOR PECL UFAST 16LFCSP	823
ADCMP572BCP-RL7 Analog Devices, Inc.	COMPARATOR	16497
MAX961EUA Analog Devices, Inc.	HIGH-SPEED COMPARATOR	230
LT6700IS6-2#TRMPBF Analog Devices, Inc.	IC COMP DUAL 400MV REF TSOT23-6	1575
AD790JN Analog Devices, Inc.	COMPARATOR	468
LTC1445CS#PBF Analog Devices, Inc.	IC COMP W/REF LOWPWR QUAD 16SOIC	2200
LTC1540IDD#TRPBF Analog Devices, Inc.	IC COMP 300NA 2% VOLT REF 8-DFN	4095
LT1711CMS8#TRPBF Analog Devices, Inc.	IC COMP R-RINOUT SINGLE 8-MSOP	2448
LMX393AUA+ Analog Devices, Inc.	LOW-VOLTAGE, DUAL COMPARATOR	14769
AD790JRZ-REEL7 Analog Devices, Inc.	IC COMPARATOR PREC W/LATCH 8SOIC	263
ADCMP370AKS-REEL7 Analog Devices, Inc.	COMPARATOR	17621
HMC674LP3E Analog Devices, Inc.	IC COMPARATOR RSPECL 16QFN	143
CMP05GJ Analog Devices, Inc.	HIGH SPEED PRECISION COMPARATOR	10792

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