Maxim Integrated
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DS18B20+T&R
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DS18B20+T&R

Product Overview

  • Category: Temperature Sensor
  • Use: Measures temperature in various applications
  • Characteristics: Digital output, high accuracy, low power consumption
  • Package: TO-92
  • Essence: One-wire digital temperature sensor
  • Packaging/Quantity: Tape & Reel

Specifications

  • Temperature Range: -55°C to +125°C
  • Accuracy: ±0.5°C (from -10°C to +85°C)
  • Resolution: 9 to 12 bits selectable
  • Supply Voltage: 3.0V to 5.5V
  • Current Consumption: 1mA max

Detailed Pin Configuration

The DS18B20+T&R has three pins: 1. GND: Ground 2. DQ: Data I/O 3. VDD: Power supply

Functional Features

  • Single-bus interface for communication
  • Programmable resolution
  • Parasite power mode for low-power applications
  • Alarm function with nonvolatile user-programmable upper and lower trigger points

Advantages

  • High accuracy over a wide temperature range
  • Simple interfacing with microcontrollers
  • Low power consumption
  • Ability to operate in a parasitic power mode

Disadvantages

  • Limited resolution options compared to some other temperature sensors
  • Requires precise timing for communication

Working Principles

The DS18B20+T&R operates by converting the analog signal from a temperature-dependent resistor into a digital value using an internal ADC. It communicates this digital value serially using a single wire protocol.

Detailed Application Field Plans

The DS18B20+T&R is widely used in various applications such as: - Environmental monitoring systems - Industrial automation - HVAC systems - Consumer electronics - Automotive applications

Detailed and Complete Alternative Models

Some alternative models to the DS18B20+T&R include: - LM35 - TMP36 - DHT22 - MCP9808

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Перечислите 10 распространенных вопросов и ответов, связанных с применением DS18B20+T&R в технических решениях.

  1. What is DS18B20+T&R?

    • The DS18B20+T&R is a digital temperature sensor with a unique 64-bit serial code, which allows multiple sensors to be connected to the same data bus.

  2. How accurate is the DS18B20+T&R?

    • The DS18B20+T&R has an accuracy of ±0.5°C over the range of -10°C to +85°C.

  3. What is the operating voltage range for DS18B20+T&R?

    • The DS18B20+T&R operates within a voltage range of 3.0V to 5.5V.

  4. Can DS18B20+T&R be used in outdoor applications?

    • Yes, the DS18B20+T&R can be used in outdoor applications as it is waterproof and suitable for harsh environments.

  5. How do I interface DS18B20+T&R with a microcontroller?

    • The DS18B20+T&R uses a 1-Wire interface, making it relatively simple to interface with a microcontroller using just one data line.

  6. Is it possible to calibrate the DS18B20+T&R?

    • The DS18B20+T&R does not have user-accessible calibration registers, but its accuracy can be improved through software compensation techniques.

  7. What is the resolution of DS18B20+T&R?

    • The DS18B20+T&R has a programmable resolution ranging from 9 to 12 bits, allowing for temperature measurements with varying levels of precision.

  8. Can multiple DS18B20+T&R sensors be connected to the same data bus?

    • Yes, multiple DS18B20+T&R sensors can be connected to the same 1-Wire data bus, each with its own unique 64-bit serial code.

  9. Does DS18B20+T&R require external components for temperature measurements?

    • No, the DS18B20+T&R includes a 12-bit ADC and a digital temperature sensor, eliminating the need for external components.

  10. What are some common applications for DS18B20+T&R?

    • Common applications for DS18B20+T&R include environmental monitoring, HVAC systems, industrial automation, and temperature-controlled systems in various industries.