MYDS18B20 Digital Temperature Sensor Series
The MYDS18B20 series are mixed-signal temperature sensing chips that offer high accuracy without user calibration. Leveraging CMOS semiconductor PN junction temperature characteristics and bandgap voltage, these chips provide digital output with high precision, excellent consistency, low power consumption, flexible programmability, and long lifespan. Featuring a built-in 14-bit ADC with a resolution of 0.0125C (default 12-bit ADC with 0.0625C resolution), they operate from -55C to +125C. Each chip is 100% tested and calibrated at the factory. The single-bus protocol simplifies system integration, requiring only one GPIO port for communication. This protocol enables cost-effective, multi-node sensing networks with long transmission distances, supporting up to 100 nodes over 100-500 meters. The chips include non-volatile E2PROM for storing 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 manufacturer website and language)
Key Features
- Temperature Accuracy: 0.5C (-10C to +85C)
- Temperature Range: -55C to +125C
- Low Power Consumption: 0.2A standby, 5A average @ 1Hz
- Wide Operating Voltage: 1.8V - 5.5V
- Configurable Resolution: 12-bit (0.0625C) or 14-bit (0.0125C)
- Configurable Temperature Conversion Time: 500ms / 15ms
- 80-bit User E2PROM Space
- Unique 64-bit ID for Multi-node Addressing
- User-configurable Alarm Values
- Standard Single-Bus Interface for Distributed Sensing
Applications
- Industrial Monitoring
- Smart Hardware
- Smart Agriculture
- Instrumentation
- Smart Home Appliances
- Multi-point Series Temperature Measurement
Technical Specifications
| Specification | Value | Notes |
|---|---|---|
| Model Series | MYDS18B20 | Includes variants like 18B20, 18B20S, 18B20Z, 18B20U |
| Temperature Accuracy (Typical) | 0.5C | -10C to +85C |
| Temperature Accuracy (Extended) | 1.5C | Other operating temperature ranges |
| Operating Temperature Range | -55C to +125C | |
| ADC Resolution | 12-bit (default), 14-bit (configurable) | 0.0625C (12-bit), 0.0125C (14-bit) |
| Operating Voltage | 1.8V to 5.5V | |
| Standby Current | 0.2A (typical @ 5V) | |
| Average Current | 5A (typical @ 1Hz) | |
| Temperature Conversion Time | 500ms / 15ms | Configurable |
| Non-Volatile Memory | 80-bit E2PROM | For user information |
| Unique ID | 64-bit ROM code | For multi-node addressing |
| Communication Protocol | 1-Wire (Single-Bus) | Supports up to 100 nodes, 100-500m cable length |
| Package Types | TO-92, TO-92S, SOP8, MSOP8 | |
| Maximum Supply Voltage | +6.0V | Absolute maximum rating |
| E2PROM Write Cycles | 50,000 cycles | -55C to +55C |
| E2PROM Data Retention | 10 years | -55C to +55C |
| Slot Time | 60 - 120 s | |
| Reset Low Time | 480 - 960 s |
2506181050_Mysentech-DS18B20S-MY_C41361412.pdf
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