Product Overview
The GX1831 is a 12-bit resolution digital thermometer offering programmable non-volatile temperature upper and lower limit alarms. It communicates via a single-bus protocol, requiring only one signal and one ground wire. With a temperature measurement range of -55C to +125C and an accuracy of 0.4C within -10C to +70C, it also supports parasitic power mode, eliminating the need for an external power supply. Each GX1831 features a unique 64-bit serial number, enabling networking of multiple sensors on the same bus for distributed temperature monitoring in applications like HVAC, building and equipment monitoring, and industrial process control.
Product Attributes
- Brand: GXCAS Technology
- Origin: BEIJING GALAXY-CAS TECHNOLOGY CO.,LTD
Technical Specifications
| Feature | Specification |
|---|---|
| Communication Interface | Single-bus interface (1 port pin) |
| Unique Identifier | Global unique 64-bit serial number per chip |
| Temperature Measurement Range | -55C to +125C (-67F to +257F) |
| Accuracy | 0.4C in the range of -10C to 70C |
| Resolution | Up to 12-bit |
| Temperature Conversion Speed | < 1.5ms (at 12-bit resolution) |
| Power Supply Voltage Range | 2.5V to 5.5V |
| Current Consumption (3V) | 600uA peak transient current (single measurement) |
| Current Consumption (3V) | 0.9uA average current (1 measurement per second) |
| Alarm Functionality | User-defined non-volatile temperature alarm settings; Alarm search command identifies devices exceeding programmed temperatures |
| ESD Protection | HBM 8000V, MM 800V |
| Package Options | TO92 (3-pin, SMT), TO92S (2-pin), MSOP8, DFN6 |
| Operating Modes | External power supply or parasitic power mode |
| Parasitic Power Mode Requirement | VDD pin must be connected to ground; requires strong pull-up during temperature conversion/data copy |
| Default Power-up Temperature | +85C |
| CRC Generator | 8-bit CRC, polynomial: X + X + X + 1 |
2308090952_GXCAS-GX1831_C2913562.pdf
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