MYDS18B20 Digital Temperature Sensor Series
The MYDS18B20 series are digital mixed-signal temperature sensing chips. They offer high accuracy, good consistency, low power consumption, flexible programmable configuration, and long lifespan without user calibration. Based on CMOS semiconductor PN junction temperature and bandgap voltage characteristics, these chips provide digital bus output after small signal amplification, analog-to-digital conversion, and digital calibration compensation. The integrated 14-bit ADC offers a resolution of 0.0125C, with a default factory configuration of 12-bit ADC and an operating range of -55C to +125C. Each chip is 100% tested and calibrated before shipment, with internal automatic compensation calculations. The single-bus communication protocol simplifies system integration, requiring only one GPIO port for read/write access. This allows for cost-effective multi-node sensing and networking with long transmission distances, supporting up to 100 nodes in series over 100 to 500 meters. Built-in non-volatile E2PROM stores chip ID, high/low temperature alarm thresholds, calibration correction values, and user-defined information.
Product Attributes
- Brand: Mysentech
- Origin: China (Implied by company website and language)
Technical Specifications
| Feature | Specification |
|---|---|
| Temperature Accuracy | 0.5C (-10C to +85C) Typical 1.5C (other temperature ranges) |
| Temperature Range | -55C to +125C |
| Low Power Consumption | Typical standby current: 0.2A @ 5V Average current: 5A @ 1Hz |
| Operating Voltage Range | 1.8V to 5.5V |
| Temperature Resolution | 12-bit ADC (0.0625C resolution) Configurable to 14-bit ADC (0.0125C resolution) |
| Temperature Conversion Time | Configurable: 500ms / 15ms |
| E2PROM Space | 80-bit for user information |
| Unique ID | 64-bit ID sequence number per chip |
| Alarm Function | User-settable alarm values |
| Interface | Standard single-bus interface |
| Supported Nodes | Up to 100 nodes in series |
| Maximum Cable Length | 500 meters |
| Available Packages | TO-92 (18B20), TO-92S (18B20S), SOP8 (18B20Z), MSOP8 (18B20U) |
| Pin Configuration (TO-92/TO-92S/SOP8/MSOP8) | 1: GND / 2: DQ / 3: VDD (TO-92/TO-92S) 5: GND / 4: DQ / 1: VDD (SOP8) 4: GND / 1: DQ / 8: VDD (MSOP8) |
| Absolute Maximum Ratings | Voltage: -0.5V to +6.0V Operating Temp: -55C to +125C Storage Temp: -55C to +125C |
| DC Electrical Characteristics (VDD=1.8V to 5.5V) | Supply Voltage (VDD): 1.8V to 5.5V Standby Current (IDDS): 0.2A typical Peak Temp Measurement Current (IDD): 350A typical @ 5V |
| AC Electrical Characteristics (Non-Volatile Memory) | Write Cycle (tWR): 40ms max Write Cycles (NEEWR): 50,000 cycles Data Retention (tEEDR): 10 years |
| AC Electrical Characteristics | Conversion Time (tCONV): 15ms to 500ms Slot Time (tSLOT): 60s to 120s Reset Low Time (tRSTL): 480s to 960s |
Applications
- Industrial Monitoring
- Smart Hardware
- Smart Agriculture
- Instrumentation
- Smart Home Appliances
- Multi-point Series Temperature Measurement
Ordering Information
| Model | Max Accuracy | Accuracy Range | Package | Conversion Time | Marking | Min. Packaging |
|---|---|---|---|---|---|---|
| MYDS18B20 | 0.5C | -10C to +85C | TO-92 | 500ms | 18B20 | 2K/bag |
| MYDS18B20-15 | 0.5C | -10C to +85C | TO-92 | 15ms | 18B20 | 2K/bag |
| MYDS18B20D10 | 1C | 0C to +70C | TO-92 | 500ms | 18B20 | 2K/bag |
| MYDS18B20S | 0.5C | -10C to +85C | TO-92S | 500ms | 1820 | 2K/bag |
| MYDS18B20Z | 0.5C | -10C to +85C | SOP8 | 500ms | 18B20Z | 4K/reel |
| MYDS18B20ZD10 | 1C | 0C to +70C | SOP8 | 500ms | 18B20Z | 4K/reel |
| MYDS18B20ZD10-15 | 1C | 0C to +70C | SOP8 | 15ms | 18B20Z | 4K/reel |
| MYDS18B20U | 0.5C | 0C to +60C | MSOP8 | 500ms | 18B20 | 5K/reel |
| MYDS18B20U-15 | 0.5C | 0C to +60C | MSOP8 | 15ms | 18B20 | 5K/reel |
2509111015_Mysentech-DS18B20U-15-MY_C51901993.pdf
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