Maxim Integrated
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DS2438AZ
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DS2438AZ

Product Overview

  • Category: Integrated Circuit
  • Use: Battery Monitor and Temperature Sensor
  • Characteristics:
    • Monitors battery voltage and temperature
    • Provides accurate measurements
    • Supports multiple communication interfaces
  • Package: TO-92
  • Essence: Integrated circuit for battery monitoring and temperature sensing
  • Packaging/Quantity: Available in reels of 1000 units

Specifications

  • Supply Voltage: 2.8V to 5.5V
  • Temperature Measurement Range: -40°C to +85°C
  • Voltage Measurement Range: 0V to 5V
  • Communication Interface: 1-Wire
  • Resolution: 10 bits for temperature, 12 bits for voltage
  • Accuracy: ±2°C for temperature, ±1% for voltage

Detailed Pin Configuration

The DS2438AZ has the following pin configuration:

  1. VDD: Power supply input
  2. GND: Ground connection
  3. DQ: 1-Wire data communication line
  4. VAD: Analog voltage input
  5. SDA: Serial data output
  6. SCL: Serial clock input

Functional Features

  • Battery Monitoring: The DS2438AZ accurately measures the voltage of a connected battery, allowing for precise monitoring of its state.
  • Temperature Sensing: It also provides temperature measurements, enabling temperature monitoring in various applications.
  • 1-Wire Interface: The device utilizes the 1-Wire communication protocol, simplifying integration into existing systems.
  • Alarm Functionality: The DS2438AZ can be configured to trigger an alarm when certain voltage or temperature thresholds are exceeded.

Advantages and Disadvantages

Advantages: - Accurate measurements - Wide operating voltage range - Compact package size - Easy integration with 1-Wire interface

Disadvantages: - Limited temperature measurement range - Requires external components for certain applications

Working Principles

The DS2438AZ operates by converting the analog voltage and temperature inputs into digital values using its internal ADCs. These values can then be accessed through the 1-Wire interface. The device also includes an alarm function that can be configured to trigger when specific thresholds are crossed.

Detailed Application Field Plans

The DS2438AZ finds applications in various fields, including:

  1. Battery Management Systems: It is used in battery packs to monitor individual cell voltages and temperatures, ensuring optimal performance and safety.
  2. Energy Storage Systems: The DS2438AZ helps monitor the state of charge and health of batteries in renewable energy storage systems.
  3. Portable Electronics: It can be integrated into portable devices to monitor battery levels and prevent overcharging or overheating.
  4. Industrial Equipment: The device is utilized in industrial machinery to monitor battery-powered systems and prevent failures.

Detailed and Complete Alternative Models

Some alternative models to the DS2438AZ include:

  1. DS2438A: Similar functionality but with a different package (SOIC)
  2. DS2438P: Provides additional protection features for harsh environments
  3. DS2438T: Offers extended temperature range (-55°C to +125°C) for extreme conditions

These alternative models provide similar battery monitoring and temperature sensing capabilities, catering to different application requirements.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací DS2438AZ v technických řešeních

Sure! Here are 10 common questions and answers related to the application of DS2438AZ in technical solutions:

  1. Q: What is DS2438AZ? A: DS2438AZ is a 1-Wire® digital thermometer and humidity sensor with an integrated ADC (Analog-to-Digital Converter).

  2. Q: What is the operating voltage range of DS2438AZ? A: The operating voltage range of DS2438AZ is typically between 2.7V and 5.5V.

  3. Q: Can DS2438AZ measure temperature accurately? A: Yes, DS2438AZ has a built-in temperature sensor that can measure temperature with high accuracy.

  4. Q: How does DS2438AZ measure humidity? A: DS2438AZ measures humidity indirectly by sensing the temperature and using it to calculate the relative humidity.

  5. Q: Can DS2438AZ be used in outdoor applications? A: Yes, DS2438AZ is suitable for outdoor applications as it has a wide operating temperature range and is designed to withstand harsh environments.

  6. Q: Does DS2438AZ require calibration? A: DS2438AZ comes factory-calibrated, so it does not require additional calibration. However, periodic recalibration may be necessary for long-term accuracy.

  7. Q: Can DS2438AZ interface with microcontrollers or other devices? A: Yes, DS2438AZ uses the 1-Wire protocol, which allows it to interface with various microcontrollers, sensors, and other devices.

  8. Q: What is the resolution of the ADC in DS2438AZ? A: The ADC in DS2438AZ has a resolution of 12 bits, providing accurate analog-to-digital conversion.

  9. Q: Can DS2438AZ be powered using a battery? A: Yes, DS2438AZ can be powered using a battery as it operates within the typical voltage range of many common batteries.

  10. Q: What are some typical applications of DS2438AZ? A: DS2438AZ is commonly used in applications such as environmental monitoring, HVAC systems, weather stations, and industrial automation where temperature and humidity measurements are required.

Please note that these answers are general and may vary depending on specific use cases and requirements.