DS1822+
Sensors
Interface: Single bus
Tolerance: ±2℃
Technical Specifications
| Type | Description |
|---|---|
| Operating Temperature | - |
| Supply Voltage | 3V~5.5V |
| Interface | Single bus |
| Features | Temperature threshold monitoring;Configurable temperature output;On-chip non-volatile parameter storage |
| Detection Temperature Range | -55°C~+125°C |
| Type | Description |
|---|---|
| Tolerance | ±2°C |
| Standby Current | - |
| Temperature Conversion Time | 750ms |
| Temperature Resolution | 12 bit |
| Package / Case | TO-92-3 |
Product Introduction
The DS1822 digital thermometer provides 9- to 12-bit centigrade temperature measurements and has an alarm function with NV user-programmable upper and lower trigger points. The DS1822 communicates over a 1-Wire bus that by definition requires only one data line (and ground) for communication with a central microprocessor. It has an operating temperature range of -55℃ to +125℃ and is accurate to ±2.0℃ over the range of -10℃ to +85℃. In addition, the DS1822 can derive power directly from the data line (“parasite power”), eliminating the need for an external power supply.
Each DS1822 has a unique 64-bit serial code, which allows multiple DS1822s to function on the 1-Wire bus; thus, it is simple to use one microprocessor to control many DS1822s 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.
Features
- Unique 1-Wire Interface Requires Only One Port Pin for Communications
- Can Be Powered from Data Line
- Power-Supply Range is 3.0V to 5.5V
- Reduced Component Count with Integrated Temperature Sensor and Interface
- Requires No External Components
- Measures temperatures from -55℃ to +125℃ (-67°F to +257°F)
- ±2.0℃ Accuracy from -10℃ to +85℃
- Thermometer Resolution is User-Selectable from 9 to 12 Bits
- Converts Temperature to 12-Bit Digital Word in 750ms (max)
- Simplifies Distributed Temperature Sensing with Multidrop Capability Each Device Has a Unique 64-Bit Serial Code Stored in an On-Board Device
- Flexible, User-Definable Nonvolatile (NV) Alarm Settings with Alarm Search Command Identifies Devices with Temperatures Outside Programmed Limits
- Software compatible with the DS18B20
Applications
- Thermostatic Controls
- Industrial Systems
- Consumer Products
- Thermometers
- Any Thermally Sensitive System
- HVAC environmental controls
- Temperature monitoring systems inside buildings, equipment or machinery
- Process monitoring and control systems
Datasheet
Alternative Parts
Common DS1822+ alternatives overseas buyers search for:
Compliance & Export Codes
| Type | Details |
|---|---|
| ECCN | EAR99 |
| CNHTS | 9025191010 |
| USHTS | 9025194000 |
| TARIC | 9025190010 |
| Type | Details |
|---|---|
| CAHTS | 9025190011 |
| BRHTS | 90251910 |
| INHTS | 90251910 |
| MXHTS | 9025.19.01 |
Sourcing Information
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