GX1820

Product Introduction

GX1820 is a programmable resolution single-bus temperature sensor that provides 9 to 12-bit resolution temperature measurement. It uses a single-bus protocol to communicate with a host controller, requiring only one signal line and one ground line. The temperature measurement range is -55°C to +125°C, with an accuracy of ±0.5°C within the range of -10°C to +70°C. The device can operate in parasitic power mode, drawing power directly from the signal line, eliminating the need for an external power supply. Each GX1820 has a unique 64-bit serial number, allowing multiple sensors to be connected on the same single bus for distributed temperature sensing. This networking capability is ideal for HVAC environmental control, building, equipment and industrial temperature measurement, and process monitoring applications.

Features

• Single-bus interface requires only one port pin for communication
• Each chip has a 64-bit serial number
• Multi-point distributed temperature measurement capability
• No external components required
• Can be powered through the data line, supply voltage range 2.5V to 5.5V
• Temperature resolution selectable from 9 to 12 bits
• At maximum 12-bit resolution, temperature conversion time is less than 750ms
• User-defined non-volatile temperature alarm settings
• Alarm search command identifies and flags devices exceeding programmed temperature limits
• Available in 3-pin TO-92 package
• Applications include temperature control, industrial systems, consumer products, grain temperature monitoring, thermometers, or any heat-sensing system

Applications

• Temperature control
• Industrial systems
• Consumer products
• Grain temperature monitoring
• Thermometers
• Any heat-sensing system

Specifications Table

To learn more, please download the PDF.