Temperature Sensors - Analog and Digital Output

Image Part Number Description / PDF Quantity Rfq
5962-8757101XA

5962-8757101XA

Analog Devices, Inc.

TWO-TERMINAL TEMPERATURE TRANSDU

3884

AD22100AR-REEL7

AD22100AR-REEL7

Analog Devices, Inc.

V-OUTPUT TEMPERATURE SENSOR

22000

AD22100AR

AD22100AR

Analog Devices, Inc.

V-OUTPUT TEMPERATURE SENSOR

44934

AD7817BRUZ

AD7817BRUZ

Analog Devices, Inc.

SENSOR DIGITAL -40C-85C 16TSSOP

228

TMP36GSZ

TMP36GSZ

Analog Devices, Inc.

SENSOR ANALOG -40C-125C 8SOIC

760

ADM1032ARMZ-2R-AD

ADM1032ARMZ-2R-AD

Analog Devices, Inc.

PLUS/MINUS 1 DEGREE CELSIUS REMO

16958

AD7418ARM

AD7418ARM

Analog Devices, Inc.

ADC, SAR, 10-BIT, SERIAL ACCESS

5000

ADT7484AARMZ-R7

ADT7484AARMZ-R7

Analog Devices, Inc.

SERIAL SWITCH/DIGITAL SENSOR

34497

TMP37FT9Z

TMP37FT9Z

Analog Devices, Inc.

SENSOR ANALOG 5C-100C TO92-3

0

ADT7317ARQZ

ADT7317ARQZ

Analog Devices, Inc.

DIGITAL TEMPERATURE SENSOR

5442

AD7818AR

AD7818AR

Analog Devices, Inc.

SERIAL SWITCH/DIGITAL SENSOR

23760

TMP03FSZ-REEL

TMP03FSZ-REEL

Analog Devices, Inc.

SENSOR DIGITAL -40C-100C 8SOIC

0

MAX6652AUB

MAX6652AUB

Analog Devices, Inc.

MAX6652 TEMPERATURE SENSOR

7564

MAX6630MUT#TGF6

MAX6630MUT#TGF6

Analog Devices, Inc.

12-BIT + SIGN DIGITAL TEMPERATUR

7451

TMP35GT9-REEL

TMP35GT9-REEL

Analog Devices, Inc.

ANALOG TEMPERATURE SENSOR

195180

AD7817AR

AD7817AR

Analog Devices, Inc.

SERIAL SWITCH/DIGITAL SENSOR

17745

ADT7311WTRZ-RL7

ADT7311WTRZ-RL7

Analog Devices, Inc.

SENSOR DIGITAL -40C-150C 8SOIC

903

TMP04FT9

TMP04FT9

Analog Devices, Inc.

SENSOR DIGITAL -40C-100C TO92-3

80

MAX6672AXK

MAX6672AXK

Analog Devices, Inc.

PWM OUTPUT TEMPERATURE SENSORS

860

AD22100AT

AD22100AT

Analog Devices, Inc.

AD22100 - VOLTAGE OUTPUT TEMPERA

4582

Temperature Sensors - Analog and Digital Output

1. Overview

Temperature sensors are devices that detect thermal energy and convert it into electrical signals. They are categorized into analog and digital output types based on signal transmission methods. Analog sensors produce continuous voltage/current signals, while digital sensors output discrete numerical values via communication protocols. These sensors are critical in industrial automation, healthcare, consumer electronics, and environmental monitoring, enabling precise thermal management and system reliability.

2. Major Types and Functional Classification

TypeFunction FeaturesApplication Examples
Analog Sensors (e.g., Thermistors, RTDs)Continuous signal output, high resolution, requires ADC conversionIndustrial process control, HVAC systems
ThermocouplesWide temperature range (-200 C to 2000 C), self-poweredHigh-temperature furnaces, automotive exhaust monitoring
Digital Sensors (e.g., IC-based)Integrated ADC, protocol interfaces (I2C/SPI), high accuracySmart thermostats, wearable devices
Infrared SensorsContactless measurement, detects thermal radiationMedical thermometers, autonomous vehicle systems

3. Structure and Components

Typical temperature sensors consist of: - Sensing Element: Thermoresistive materials (e.g., platinum in RTDs) or semiconductor junctions - Signal Conditioning Circuitry: Amplifiers, ADC converters (for digital types), and linearization modules - Package: Hermetic sealing for environmental protection, TO-92 or SMD enclosures - Interface: Wires/pins for analog sensors, digital communication buses (I2C, SPI)

4. Key Technical Specifications

ParameterDescriptionImportance
Temperature RangeOperational limits (-50 C to +300 C typical)Determines application suitability
Accuracy 0.1 C to 5 C depending on typeImpacts measurement reliability
Response Time1ms to 10s for signal stabilizationCritical for dynamic systems
Resolution0.01 C (high-end digital) to 1 CDefines measurement granularity
Output InterfaceVoltage, current, I2C, UARTDictates system integration method

5. Application Fields

  • Industrial: Reactor temperature monitoring, CNC machine thermal compensation
  • Healthcare: Patient monitoring systems, vaccine storage units
  • Consumer: Smart home HVAC, smartphone thermal management
  • Automotive: Battery management systems (BMS), engine temperature control

6. Leading Manufacturers and Products

ManufacturerRepresentative ProductKey Features
Texas InstrumentsLM75BDigital output, 2 C accuracy, I2C interface
STMicroelectronicsLPS22HBMEMS-based digital sensor, 0.008 C resolution
TE ConnectivityNTC Thermistor NTCGHigh sensitivity, automotive-grade reliability
Analog DevicesAD8495Thermocouple signal conditioner, 1mV/ C output

7. Selection Guidelines

Key considerations: - Required temperature range and environmental conditions - Output type compatibility with host system - Accuracy vs. cost trade-offs - Installation constraints (contact vs. non-contact) - Calibration requirements and long-term stability

8. Industry Trends

Future developments focus on: - Wireless sensor networks with integrated BLE/Zigbee - AI-enhanced predictive thermal management - MEMS-based ultra-miniaturized sensors for IoT devices - Energy-harvesting self-powered sensor nodes - Multi-sensor fusion systems combining temperature with humidity/pressure

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