Linear - Comparators

Part Number	Description / PDF	Quantity
TLC393CPWR Texas Instruments	IC VOLT COMPARATOR DUAL 8-TSSOP	365
LM360MX/NOPB Texas Instruments	IC COMPARATOR HS DIFF 8-SOIC	1742
TLC352CPWR Texas Instruments	IC DIFF VOLT COMP DUAL 8-TSSOP	2000
LM211D Texas Instruments	IC DIFF COMPARATOR 8-SOIC	3148
LM339AMX/NOPB Texas Instruments	IC COMPARATOR QUAD LO PWR 14SOIC	15145
LM211MDREP Texas Instruments	IC DIFF COMP W/STROBES 8-SOIC	2188
LM211DE4 Texas Instruments	LM211 DIFFERENTIAL COMPARATOR WI	575
TLV1393CD Texas Instruments	COMPARATOR, 2 FUNC, 9000UV OFFSE	14546
TLV7211IDCKR Texas Instruments	IC COMP R-R IN/P-P OUT SC70-6	4989
TLC3702CDRG4 Texas Instruments	IC MICROPWR COMP DUAL 8-SOIC	0
TLV3704IPW Texas Instruments	IC QUAD COMP P-P NANOPWR 14TSSOP	3044860
TL714CD Texas Instruments	TL714 SINGLE HIGH-SPEED DIFFEREN	4071
TLC3704CPW Texas Instruments	IC MICROPWR COMP QUAD 14-TSSOP	390
TLC374INE4 Texas Instruments	COMPARATOR, 4 FUNC, 7000UV OFFSE	1550
LM293DGKRG4 Texas Instruments	IC COMPARATOR DIFF DUAL 8VSSOP	0
LM393ADGKR Texas Instruments	IC DUAL DIFF COMPARATOR 8VSSOP	2400
LM393APWRE4 Texas Instruments	IC DUAL DIFF COMPARATOR 8-TSSOP	0
LM193H/NOPB Texas Instruments	IC COMP DUAL LOW PWR OFF TO99-8	418
5962-9096901M2A Texas Instruments	TLC3704M LOW-POWER LINCMOS QUAD	6
LM3302N Texas Instruments	IC COMPARATOR QUAD DIFF 14-DIP	1005

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