DS1836D-20+ Encyclopedia Entry

Product Overview

Category: Integrated Circuits (ICs)

Use: The DS1836D-20+ is a digital thermometer and thermostat IC. It is designed to accurately measure temperature and control heating or cooling systems in various applications.

Characteristics: - High accuracy temperature measurement - Programmable temperature set points - Digital output for easy interfacing with microcontrollers - Low power consumption - Wide operating voltage range

Package: The DS1836D-20+ is available in a small surface mount package, making it suitable for compact designs.

Essence: The DS1836D-20+ is an essential component for temperature sensing and control in electronic systems.

Packaging/Quantity: The DS1836D-20+ is typically sold in reels of 2500 units.

Specifications

• Temperature Measurement Range: -55°C to +125°C
• Accuracy: ±0.5°C (typical)
• Resolution: 9 bits
• Supply Voltage: 2.7V to 5.5V
• Operating Current: 1.5μA (typical)
• Output Interface: 3-wire serial interface

Pin Configuration

The DS1836D-20+ has the following pin configuration:

```

---

| | --| VDD | --| GND | --| DQ | --| SCLK | --| RST | |___________| ```

• VDD: Power supply input
• GND: Ground connection
• DQ: Serial data output
• SCLK: Serial clock input
• RST: Reset input

Functional Features

1. Accurate Temperature Measurement: The DS1836D-20+ provides precise temperature readings with a high level of accuracy.
2. Programmable Temperature Set Points: Users can easily set temperature thresholds for triggering heating or cooling systems.
3. Digital Output Interface: The 3-wire serial interface allows seamless integration with microcontrollers and other digital devices.
4. Low Power Consumption: The IC operates with low power consumption, making it suitable for battery-powered applications.
5. Wide Operating Voltage Range: The DS1836D-20+ can be powered by a wide range of supply voltages, enhancing its versatility.

Advantages and Disadvantages

Advantages: - High accuracy temperature measurement - Programmable temperature set points - Easy integration with microcontrollers - Low power consumption - Wide operating voltage range

Disadvantages: - Limited resolution (9 bits) - Requires external components for complete thermostat functionality

Working Principles

The DS1836D-20+ utilizes a built-in temperature sensor to measure the ambient temperature. It converts the analog temperature signal into a digital value using an internal analog-to-digital converter (ADC). The digital temperature value is then compared with the programmed set points to determine if any action needs to be taken to control the temperature.

Application Field Plans

The DS1836D-20+ finds applications in various fields, including: 1. HVAC Systems: The IC can be used in heating, ventilation, and air conditioning systems to regulate temperature. 2. Industrial Automation: It is suitable for temperature monitoring and control in industrial processes. 3. Consumer Electronics: The DS1836D-20+ can be integrated into home appliances like refrigerators and ovens for temperature control. 4. Medical Devices: It finds use in medical equipment that requires accurate temperature sensing and control.

Alternative Models

1. DS18B20: This is a popular alternative with similar features but offers higher resolution (12 bits).
2. LM35: Another alternative temperature sensor IC with analog output.
3. TMP36: A low-cost alternative with analog output and a wide temperature range.

These alternative models provide options for different requirements and design considerations.

In conclusion, the DS1836D-20+ is a versatile digital thermometer and thermostat IC that offers accurate temperature measurement and control capabilities. Its compact package, low power consumption, and easy integration make it suitable for various applications in different industries.