Linear - Comparators

Part Number	Description / PDF	Quantity
FAN156L6X Sanyo Semiconductor/ON Semiconductor	IC COMPARATOR LV 6-MICROPAK	820000
NCS3402DR2G Sanyo Semiconductor/ON Semiconductor	IC COMPARATOR OPEN DRAIN 8SOIC	2147483647
LM393DR2GH Sanyo Semiconductor/ON Semiconductor	IC COMP DUAL OFFSET LV 8SOIC	380710000
NCS2202AMUTBG Sanyo Semiconductor/ON Semiconductor	IC COMPARATOR LV 6DFN	0
LM2903VDR2G Sanyo Semiconductor/ON Semiconductor	IC COMP DUAL OFFSET LV 8SOIC	903
NCV2202SN2T1G Sanyo Semiconductor/ON Semiconductor	IC COMPARATOR SGL CMOS SOT-23-5	232
LM2901DTBR2G Sanyo Semiconductor/ON Semiconductor	IC COMP QUAD SGL SUPPLY 14TSSOP	2594
LM393EDR2G Sanyo Semiconductor/ON Semiconductor	IC COMP DUAL OFFSET LV 8SOIC	408
NCV2200AMUTBG Sanyo Semiconductor/ON Semiconductor	ANA COMPARATOR UDFN6	0
LM393AM Sanyo Semiconductor/ON Semiconductor	IC COMPARATOR DUAL DIFF 8-SOP	0
LM293DMR2 Sanyo Semiconductor/ON Semiconductor	IC COMP DUAL OFFSET LV MICRO-8	0
MC10E1652L Sanyo Semiconductor/ON Semiconductor	IC COMPARATOR DUAL ECL 16-CDIP	0
KA2903DMTF Sanyo Semiconductor/ON Semiconductor	IC COMPARATOR DUAL DIFF 8-SOP	0
KA2903 Sanyo Semiconductor/ON Semiconductor	IC COMPARATOR DUAL DIFF 8-DIP	0
LM239DTBR2 Sanyo Semiconductor/ON Semiconductor	IC COMP QUAD SGL SUPPLY 14TSSOP	0
KA339DTF Sanyo Semiconductor/ON Semiconductor	IC COMPARATOR QUAD 14-SOP	0
KA311DTF Sanyo Semiconductor/ON Semiconductor	IC COMPARATOR SINGLE 8-SOP	0
NCS2202SN2T1 Sanyo Semiconductor/ON Semiconductor	IC COMPARATOR LV LOW PWR 5TSOP	0
LM339DTBR2 Sanyo Semiconductor/ON Semiconductor	IC COMPARATOR QUAD SGL 14-TSSOP	0
NE521DG Sanyo Semiconductor/ON Semiconductor	IC COMPARATOR DUAL DIFF 14-SOIC	0

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