MYDS18B20 Digital Temperature Sensor Series
Product Overview
The MYDS18B20 series is a mixed-signal digital temperature sensor chip offering high accuracy without user calibration. Utilizing CMOS semiconductor PN junction temperature characteristics and bandgap voltage, it provides precise temperature readings from -10C to +85C with a typical accuracy of 0.5C. The chip features a 14-bit ADC with a resolution of 0.0125C (defaulting to 12-bit at 0.0625C resolution) and operates across a wide temperature range of -55C to +125C. Its digital single-bus protocol simplifies system integration, requiring only one GPIO port for communication and enabling cost-effective, multi-node sensing networks with long transmission distances. Built-in non-volatile E2PROM stores device ID, alarm thresholds, calibration data, and user-defined information. Available in TO-92, TO-92S, SOP8, and MSOP8 packages.
Product Attributes
- Brand: Mysentech
- Origin: China (implied by website and language)
Technical Specifications
| Feature | Specification | Details |
|---|---|---|
| Temperature Accuracy | 0.5C | (-10C to +85C) |
| Typical Accuracy (Other Ranges) | 1.5C | |
| Temperature Range | -55C to +125C | |
| Standby Current | 0.2A (typical @ 5V) | |
| Average Current | 5A (typical @ 1Hz) | |
| Operating Voltage | 1.8V to 5.5V | |
| Resolution | 12-bit ADC (default) | 0.0625C. Configurable to 14-bit (0.0125C) |
| Temperature Conversion Time | Configurable | 500ms / 15ms |
| User E2PROM Space | 80-bit | For user information |
| Unique ID | 64-bit serial number per chip | For multi-point networking |
| Alarm Function | User-settable high/low alarm values | |
| Interface | Standard Single-Bus (1-Wire) | Supports distributed multi-node temperature measurement |
| Max Nodes (5V, 1K pull-up) | 100 nodes | Up to 500 meters cable length |
| Applications | Industrial Monitoring, Smart Hardware, Smart Agriculture, Instrumentation, Smart Home Appliances, Multi-point Series Temperature Measurement | |
| Package Types | TO-92, TO-92S, SOP8, MSOP8 | (Models: 18B20, 18B20S, 18B20Z, 18B20U) |
| Pin Configuration | GND, DQ, VDD | (N.C. pins also present in some packages) |
| Internal Structure | 64-bit ROM, Temperature Registers, Alarm Threshold Registers (TH, TL), Configuration Register, User E2PROM | |
| Power Modes | External Power Mode, Parasitic Power Mode | |
| E2PROM Write Cycles | 50,000 times | (-55C to +55C) |
| E2PROM Data Retention | 10 years | (-55C to +55C) |
| Absolute Maximum Ratings | -0.5V to +6.0V (Voltage to Ground) | |
| Operating Temperature Range | -55C to +125C | |
| Storage Temperature Range | -55C to +125C | |
| Ordering Information (Examples) | MYDS18B20 | 0.5C accuracy (-10C~+85C), TO-92, 500ms conversion, 2K/bag |
| Ordering Information (Examples) | MYDS18B20Z | 0.5C accuracy (-10C~+85C), SOP8, 500ms conversion, 4K/reel |
| Ordering Information (Examples) | MYDS18B20U-15 | 0.5C accuracy (0C~+60C), MSOP8, 15ms conversion, 5K/reel |
2508281625_Mysentech-DS18B20ZD10-15-MY_C51026728.pdf
Please Use Our Online Inquiry Contact Form Below If You Have Any Questions, Our Team Will Get Back To You As Soon As Possible
