Linear - Comparators

Part Number	Description / PDF	Quantity
MC3302DTBR2G Sanyo Semiconductor/ON Semiconductor	IC OPAMP QUAD SINGLE 14-TSSOP	240617500
NCS2200SN1T1G Sanyo Semiconductor/ON Semiconductor	IC COMPARATOR 1V LOW PWR 5TSOP	122815000
TS391SN2T1G Sanyo Semiconductor/ON Semiconductor	IC COMPARATOR LOW PWR 5-TSOP	3865
NCS2252SQ2T2G Sanyo Semiconductor/ON Semiconductor	SINGLE OPEN DRAIN OUTPUT	0
LM211DR2G Sanyo Semiconductor/ON Semiconductor	IC COMPARATOR SGL HI VOLT 8SOIC	9797
LM393DR2G Sanyo Semiconductor/ON Semiconductor	IC COMP DUAL OFFSET LV 8SOIC	2147483647
NCS2200SQLT1G Sanyo Semiconductor/ON Semiconductor	IC COMPARATOR LV LP COMPL 6-DFN	249036000
NCV2393DR2G Sanyo Semiconductor/ON Semiconductor	IC COMPARATOR 16V DUAL 8SOIC	920
NCS2250SQ2T2G Sanyo Semiconductor/ON Semiconductor	SINGLE PUSH-PULL OUTPUT C	0
NCV331SN3T1G Sanyo Semiconductor/ON Semiconductor	IC COMPARATOR DUAL LV 5TSOP	3179
NCS2252SN2T1G Sanyo Semiconductor/ON Semiconductor	SINGLE OPEN DRAIN OUTPUT	0
KA339A Sanyo Semiconductor/ON Semiconductor	IC COMPARATOR QUAD 14-DIP	1396
NCV391SN2T1G Sanyo Semiconductor/ON Semiconductor	IC COMPARATOR LP 5TSOP	15073000
NCS2250SN2T3G Sanyo Semiconductor/ON Semiconductor	SINGLE PUSH-PULL OUTPUT C	46
NCV2252SQ2T2G Sanyo Semiconductor/ON Semiconductor	SINGLE OPEN DRAIN OUTPUT	0
NCV2250SQ2T2G Sanyo Semiconductor/ON Semiconductor	SINGLE PUSH-PULL OUTPUT C	0
MC3302DG Sanyo Semiconductor/ON Semiconductor	IC OPAMP QUAD SINGLE 14-SOIC	900
LMV393DMR2G Sanyo Semiconductor/ON Semiconductor	IC COMPARATOR GP LV DUAL MICRO8	0
LMV339DR2G Sanyo Semiconductor/ON Semiconductor	IC COMPARATOR GP LV QUAD 14-SOIC	2794
LM239DG Sanyo Semiconductor/ON Semiconductor	IC COMP QUAD SGL SUPPLY 14SOIC	746

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