MYDS18B20 Digital Temperature Sensor Series
The MYDS18B20 series are digital mixed-signal temperature sensing chips that offer high accuracy without user calibration. Utilizing CMOS semiconductor PN junction temperature characteristics and bandgap voltage, these chips provide precise temperature readings with advantages like high consistency, low power consumption, flexible programmability, and long lifespan. They feature an integrated 14-bit ADC with a resolution of 0.0125C, defaulting to 12-bit ADC at factory settings. Each chip is 100% tested and calibrated, with internal automatic compensation. The single-bus digital interface 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. Built-in non-volatile E2PROM stores chip 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 domain and language)
Technical Specifications
| Feature | Specification | Details |
|---|---|---|
| Temperature Accuracy | 0.5C | -10C to +85C |
| 1.5C (typical) | Other operating temperature ranges | |
| Temperature Range | -55C to +125C | |
| Power Consumption | 0.2A (standby) | @5V |
| 5A (average) | @1Hz | |
| Operating Voltage Range | 1.8V - 5.5V | |
| Temperature Resolution | 12-bit ADC | 0.0625C |
| Configurable 14-bit ADC | 0.0125C | |
| Temperature Conversion Time | Configurable: 500ms / 15ms | |
| User E2PROM Space | 80 bits | |
| Unique ID | 64-bit serial number per chip | |
| Alarm Function | User-settable high/low alarm values | |
| Communication Interface | Standard Single-Bus (1-Wire) | |
| Pin Configuration | GND | Ground |
| DQ | Data Input/Output, Single-Bus Digital Interface | |
| VDD | Power Supply | |
| N.C. | Not Connected | |
| Available Packages | TO-92 (18B20), TO-92S (18B20S), SOP8 (18B20Z), MSOP8 (18B20U) | |
| Applications | Industrial Monitoring, Smart Hardware, Smart Agriculture, Instrumentation, Smart Home Appliances, Multi-point Series Temperature Measurement | |
| Absolute Maximum Ratings | Voltage (Any Pin to Ground) | -0.5V to +6.0V |
| Operating Temperature Range | -55C to +125C | |
| Storage Temperature Range | -55C to +125C | |
| DC Electrical Characteristics (Typical) | Supply Voltage (VDD) | 1.8V to 5.5V |
| Standby Current (IDDS) | 0.2A @ 5V | |
| Temperature Measurement Peak Current (IDD) | 350A @ VDD=5V | |
| Input Logic Low (VIL) | 1.46V (5V Supply) / 0.95V (3V Supply) | |
| Input Logic High (VIH) | 1.56V (5V Supply) / 1.08V (3V Supply) | |
| Pull-down Current (IL) | 4.0mA @ VI/O=0.4V | |
| Pull-up Resistor (Rup) | 1K to 4.7K | |
| AC Electrical Characteristics (Non-Volatile Memory) | Non-Volatile Memory Write Cycle (tWR) | 40ms (Max) |
| E2PROM Write Cycles (NEEWR) | 50,000 cycles | |
| E2PROM Data Retention (tEEDR) | 10 years | |
Ordering Information
| Model | Max Accuracy | Accuracy Range | Package | Conversion Time | Marking | Min. Packaging |
|---|---|---|---|---|---|---|
| MYDS18B20 | 0.5C | -10C~+85C | TO-92 | 500ms | 18B20 | 2K/bag |
| MYDS18B20-15 | 0.5C | -10C~+85C | TO-92 | 15ms | 18B20 | 2K/bag |
| MYDS18B20D10 | 1C | 0C~+70C | TO-92 | 500ms | 18B20 | 2K/bag |
| MYDS18B20S | 0.5C | -10C~+85C | TO-92S | 500ms | 1820 | 2K/bag |
| MYDS18B20Z | 0.5C | -10C~+85C | SOP8 | 500ms | 18B20Z | 4K/tray |
| MYDS18B20ZD10 | 1C | 0C~+70C | SOP8 | 500ms | 18B20Z | 4K/tray |
| MYDS18B20ZD10-15 | 1C | 0C~+70C | SOP8 | 15ms | 18B20Z | 4K/tray |
| MYDS18B20U | 0.5C | 0C~+60C | MSOP8 | 500ms | 18B20 | 5K/tray |
| MYDS18B20U-15 | 0.5C | 0C~+60C | MSOP8 | 15ms | 18B20 | 5K/tray |
2506181049_Mysentech-DS18B20-MY_C20611523.pdf
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