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Features
- Unique 1-Wire® Interface Requires Only One Port Pin for Communication
- Maximize System Accuracy in Broad Range of Thermal Management Applications
- Measures Temperatures from -55°C to +125°C (-67°F to +257°F)
- ±0.5°C Accuracy from -10°C to +85°C
- 9-Bit Resolution
- No External Components Required
- Parasite Power Mode Requires Only 2 Pins for Operation (DQ and GND)
- Simplifies Distributed Temperature-Sensing Applications with Multidrop Capability
- Each Device Has a Unique 64-Bit Serial Code Stored in On-Board ROM
- Flexible User-Definable Nonvolatile (NV) Alarm Settings with Alarm Search Command Identifies Devices with Temperatures Outside Programmed Limits
- Available in 8-Pin SO (150 mils) and 3-Pin TO-92 Packages
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The DS18S20 digital thermometer provides 9-bit Celsius temperature measurements and has an alarm function with nonvolatile user-programmable upper and lower trigger points. The DS18S20 communicates over a 1-Wire® bus that by definition requires only one data line (and ground) for communication with a central microprocessor. In addition, the DS18S20 can derive power directly from the data line ("parasite power"), eliminating the need for an external power supply.
Each DS18S20 has a unique 64-bit serial code, which allows multiple DS18S20s to function on the same 1-Wire bus. Thus, it is simple to use one microprocessor to control many DS18S20s distributed over a large area. Applications that can benefit from this feature include HVAC environmental controls, temperature monitoring systems inside buildings, equipment, or machinery, and process monitoring and control systems.
Applications
- Consumer Products
- Industrial Systems
- Thermally Sensitive Systems
- Thermometers
- Thermostatic Controls
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DS18S20
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Technical Articles 21
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Introduction to Medical Instruments and Growing Trend for Point-of-Care and Near-Patient Testing
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Overview of Sensor Signal Paths
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How to Power the Extended Features of 1-Wire® Devices
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Package Thermal Resistance Values (Theta JA, Theta JC) for Temperature Sensors and 1-Wire Devices
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Temperature-Based Fan Control Using the MAXQ2000 Microcontroller
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1-Wire Communication Through Software
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Using the DS2480B Serial 1-Wire® Line Driver
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Curve Fitting the Error of a Bandgap-Based Digital Temperature Sensor
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Understanding and Using Cyclic Redundancy Checks with Maxim 1-Wire and iButton Products
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1-Wire® Tagging with XML
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Interfacing the DS18X20/DS1822 1-Wire® Temperature Sensor in a Microcontroller Environment
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1-Wire Communication with a Microchip PICmicro Microcontroller
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White Paper 2: Using the 1-Wire® Public Domain Kit
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Create a 1-Wire Master with Xilinx PicoBlaze
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Reference Design of a 1-Wire® Bidirectional Voltage-Level Translator for 1.8V to 5V
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Remote Monitoring System Sends Email via SMS
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Thermal Management Handbook
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White Paper 5: Using 1-Wire APIs for Data Sheet Commands
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1-Wire Master Device Configuration
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Advanced 1-Wire Network Driver
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Minimalist Temperature Control Demo
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
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TO92
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TO92
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Small-Outline IC, Narrow (0.15in)
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Apr 14, 2020
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Software & Part Ecosystem
| Parts | Product Life Cycle | Description | ||
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1-Wire Temperature Sensors1 |
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PRODUCTION |
Parasite-Power Digital Thermometer |
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