Linear - Comparators

Part Number	Description / PDF	Quantity
NCS2202SN2T1G Sanyo Semiconductor/ON Semiconductor	IC COMPARATOR LV LOW PWR 5TSOP	3802
NCV2901DR2G Sanyo Semiconductor/ON Semiconductor	IC COMP QUAD SGL SUPPLY 14SOIC	2131
NCV2200SQ2T2G Sanyo Semiconductor/ON Semiconductor	IC COMPARATOR COMPL SC70-5	17299000
LM2901VDR2G Sanyo Semiconductor/ON Semiconductor	IC COMP QUAD SGL SUPPLY 14SOIC	665
LM293DG Sanyo Semiconductor/ON Semiconductor	IC COMP DUAL OFFSET LV 8-SOIC	4989
KA339 Sanyo Semiconductor/ON Semiconductor	IC COMPARATOR QUAD 14-DIP	1411
MC3302DR2G Sanyo Semiconductor/ON Semiconductor	IC OPAMP QUAD SINGLE 14-SOIC	818
LM393DMR2G Sanyo Semiconductor/ON Semiconductor	IC COMP DUAL LV OFFSET MICRO-8	1082
NCV2200SN2T1G Sanyo Semiconductor/ON Semiconductor	IC COMPARATOR COMPL SOT-23-5	236
NCS2202SQ2T2G Sanyo Semiconductor/ON Semiconductor	IC COMPARATOR LV LP OD SC70-5	16601
NCV2903DR2G Sanyo Semiconductor/ON Semiconductor	IC COMP DUAL OFFSET LV 8SOIC	12
LMV331SN3T1G Sanyo Semiconductor/ON Semiconductor	IC COMPARATOR SGL GP LV 5TSOP	6
NCV2252SN2T1G Sanyo Semiconductor/ON Semiconductor	SINGLE OPEN DRAIN OUTPUT	72000
NCS2200SQ2T2G Sanyo Semiconductor/ON Semiconductor	IC COMPARATOR LV LP OD SC70-5	36419000
LM239AMX Sanyo Semiconductor/ON Semiconductor	IC COMPARATOR QUAD 14-SOP	544
NCS2200AMUT1G Sanyo Semiconductor/ON Semiconductor	IC COMPARATOR LV 6-UDFN	20888
LMV331SQ3T2G Sanyo Semiconductor/ON Semiconductor	IC COMPARATOR GP LV SINGLE SC-70	3248
TS393DR2G Sanyo Semiconductor/ON Semiconductor	IC COMPARATOR LOW PWR 8SOIC	807
LMV393MUTAG Sanyo Semiconductor/ON Semiconductor	IC OP AMP DUAL GP LV LV 8-UDFN	241057000
NCV2250SN2T1G Sanyo Semiconductor/ON Semiconductor	SINGLE PUSH-PULL OUTPUT C	229727000

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