Temperature Sensors - Analog and Digital Output

Image Part Number Description / PDF Quantity Rfq
AD7417ARU-REEL7

AD7417ARU-REEL7

Analog Devices, Inc.

10-BIT SAR ADC, 4 CHANNEL

350

AD7417BR-REEL7

AD7417BR-REEL7

Analog Devices, Inc.

10-BIT SAR ADC, 4 CHANNEL

24296

AD7817AR-REEL7

AD7817AR-REEL7

Analog Devices, Inc.

SERIAL SWITCH/DIGITAL SENSOR

27010

AD7818ARZ

AD7818ARZ

Analog Devices, Inc.

SERIAL SWITCH/DIGITAL SENSOR

449

ADT7411ARQZ

ADT7411ARQZ

Analog Devices, Inc.

SENSOR DIGITAL -40C-120C 16QSOP

1054

MAX6627MKA#TG16

MAX6627MKA#TG16

Analog Devices, Inc.

REMOTE DIGITAL TEMPERATURE SENSO

5184

MAX6698EE99

MAX6698EE99

Analog Devices, Inc.

7-CHANNEL PRECISION REMOTE-DIODE

0

DS1859B-050/TR

DS1859B-050/TR

Analog Devices, Inc.

DUAL, TEMP-CONTROLLED RESISTOR

2430

MAX6613MXK

MAX6613MXK

Analog Devices, Inc.

ANALOG TEMPERATURE SENSOR

0

MAX6612MXK

MAX6612MXK

Analog Devices, Inc.

ANALOG TEMPERATURE SENSOR

106

ADT75BRMZ-REEL

ADT75BRMZ-REEL

Analog Devices, Inc.

+/- 1 DEGREE CENTIGRADE ACCURATE

3977

ADT7301ARTZ-REEL7

ADT7301ARTZ-REEL7

Analog Devices, Inc.

SENSOR DIGITAL -40C-150C SOT23-6

7026

ADT7422CCPZ-RL7

ADT7422CCPZ-RL7

Analog Devices, Inc.

DIGITAL TEMPERATURE SENSOR 10-BI

1206

AD7814ARTZ-REEL7

AD7814ARTZ-REEL7

Analog Devices, Inc.

SENSOR DIGITAL -55C-125C SOT23-6

13899

ADT7410TRZ-REEL7

ADT7410TRZ-REEL7

Analog Devices, Inc.

SENSOR DIGITAL -55C-150C 8SOIC

6964

TMP35GSZ-REEL

TMP35GSZ-REEL

Analog Devices, Inc.

ANALOG TEMPERATURE SENSOR

16686

AD7415ARTZ-0500RL7

AD7415ARTZ-0500RL7

Analog Devices, Inc.

SENSOR DIGITAL -40C-125C SOT23-5

820

TMP35FSZ

TMP35FSZ

Analog Devices, Inc.

ANALOG TEMPERATURE SENSOR

1086

AD7817BR-REEL

AD7817BR-REEL

Analog Devices, Inc.

SERIAL SWITCH/DIGITAL SENSOR

17500

AD7417BR

AD7417BR

Analog Devices, Inc.

10-BIT SAR ADC, 4 CHANNEL

16710

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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