GX30H05

1.Features 
• 1-Wire Interface Requires Only One Port Pin for Communication 
• Each chip has an independent 64-bit serial number 
• Multidrop Capability Simplifies Distributed Temperature-Sensing Applications 
• Requires No External Components 
• Can be powered by the data line. the supply voltage range is：2.5V~5.5V 
• Measuring Range：-80°C to +200°C 
• ±0.5°C Accuracy from -10°C to +85° 
• Thermometer Resolution is User Selectable from 9 to 12 Bits 
• Converts Temperature to 12-Bit Digital Word in 750ms (Max) 
• User-Definable Nonvolatile (NV) Alarm Settings 
• Alarm Search Command Identifies and Addresses Devices Whose Temperature is Outside Programmed Limits 
• Superb electrostatic protection capability: HBM 8000V, MM 800V 
• Available in TO-92, TO92S Packages 

2.Application Scenario 
• Temperature Control 
• Industrial System 
• Consumer Goods 
• Grain Temperature Measurement 
• Thermometer 
• Any Thermal System 
 
3.Description 
The GX30H05 digital thermometer provides 9-bit to 12-bit Celsius temperature measurements and has an alarm function with nonvolatile user- programmable upper and lower trigger points. The GX30H05 communicates over a 1-Wire bus that by definition requires only one data line (and ground) for communication with a central microprocessor. It has an operating temperature range of -55° C to +125° C and is accurate to ±0.4°C over the range of -10° C to +85° C. In addition, the GX30H05 can derive power directly from the data line (“parasite power”), eliminating the need for an external power supply. Each GX30H05 has a unique 64-bit serial code, which allows multiple GX30H05s to function on the same 1-Wire bus. Thus, it is simple to use one microprocessor to control many GX30H05s distributed over a large area. Applications that can benefit from this feature include HVAC environmental controls, temperature monitoring systems inside buildings, equipment, or machinery, and process monitoring and control systems. 

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