Linear - Comparators

Part Number	Description / PDF	Quantity
TLV3011AIDBVRG4 Texas Instruments	IC COMPARATR 1.8V W/REF SOT23-6	0
TLC3702CPWR Texas Instruments	IC MICROPWR COMP DUAL 8-TSSOP	18948
LMV393IPWG4 Texas Instruments	IC DUAL GP LV COMPARATOR 8-TSSOP	0
TLC339IDR Texas Instruments	IC QUAD COMP 14-SOIC	6603
LM319MX/NOPB Texas Instruments	IC COMPARATOR DUAL HI SPD 14SOIC	8175
TL3016CDR Texas Instruments	IC PREC COMP ULTRA-FAST 8-SOIC	4545
TLC354IDR Texas Instruments	COMPARATOR	15395
LM139AD Texas Instruments	IC QUAD DIFF COMPARATOR 14-SOIC	138910000
TLV3011AIDCKRG4 Texas Instruments	IC COMPARATOR 1.8V W/REF SC70-6	0
TLC372MD Texas Instruments	IC DIFF COMPARATOR DUAL 8-SOIC	887
LM293DRG3 Texas Instruments	IC COMPARATOR DIFF DUAL 8SOIC	1374
TLV4082QDBVRQ1 Texas Instruments	AUTOMOTIVE DUAL COMPARATOR WITH	2990
TPS3700DDCR2 Texas Instruments	IC COMP WINDOW W/REF 6SOT	719
TLV2354MJB Texas Instruments	TLV2354M LINCMOS QUAD LOW-VOLTAG	537
TLC352CP Texas Instruments	IC DIFF COMPARATOR DUAL 8-DIP	495
TLC374CD Texas Instruments	IC QUAD DIFF COMP 14-SOIC	884
LM2903DRE4 Texas Instruments	IC DUAL GP DIFF COMPARATR 8-SOIC	0
TL331IDBVRE4 Texas Instruments	IC SNGL DIFF COMPARATOR SOT23-5	0
TLV3401IDBVR Texas Instruments	IC OUT COMPARATR NANOPWR SOT23-5	827
TLV3704IPWR Texas Instruments	IC QUAD COMP P-P NANOPWR 14TSSOP	1687

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