Linear - Comparators

Part Number	Description / PDF	Quantity
LT6703HVCS5-3#TRMPBF Analog Devices, Inc.	IC COMPARATOR 400MV REF TSOT23-5	4500
MAX9032AUA+ Maxim Integrated	IC COMPARATOR DUAL 8-UMAX	136550
ISL28915FH6Z-T7 Intersil (Renesas Electronics America)	IC COMPARATOR SINGLE SOT23-6	22572
MIC841NYMT-TR Roving Networks / Microchip Technology	IC COMPARATOR MICROPWR 6MLF	0
LM2901SNG	COMPARATOR	351700
S-89531ACNC-HCCTFG ABLIC U.S.A. Inc.	IC COMPARATOR CMOS 0.7UA SC-88A	0
MAX903EPA Analog Devices, Inc.	LOW-POWER VOLTAGE COMPARATOR	2726
TLV3502AIDCNRG4 Texas Instruments	IC COMPARATOR R-R HI-SPD SOT23-8	0
MAX933CUA Analog Devices, Inc.	COMPARATOR WITH REFERENCE	2159
ADCMP551BRQZ-REEL7 Analog Devices, Inc.	IC COMPARATOR PECL/LVPECL 16QSOP	0
AD8561AR-REEL Analog Devices, Inc.	COMPARATOR	29149
LM2903DG	COMPARATOR	185394
MAX9646EBS+TG45 Maxim Integrated	IC COMP SNGL LOW PWR W/REF 4UCSP	368225000
LMC6772BIM/NOPB Texas Instruments	IC COMP DUAL MICRPWR CMOS 8-SOIC	9975
MAX40005ANS05+T Maxim Integrated	IC COMPARATOR VR OPEN DRAIN 4WLP	42500
LM211QDRG4Q1 Texas Instruments	LM211-Q1 AUTOMOTIVE CATALOG DIFF	13557
TLC339IPWR Texas Instruments	IC DIFF COMPARATOR QUAD 14-TSSOP	2557
TLV3202AQDGKRQ1 Texas Instruments	IC COMP PUSH-PULL 8-VSSOP	0
MIC842LYMT-TR Roving Networks / Microchip Technology	IC COMPARATOR MICROPWR 4MLF	1968
TSM982CUA+T Touchstone Semiconductor	IC COMPARATOR DUAL W/REF 8MSOP	2779

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