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DS1821S
+NomenclatureSENSOR DIGITAL -55C-125C 8SO
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FabricantAnalog Equipment GmbH / intégration Maxim
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Pièce fabricant #DS1821S
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En stock5435
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Spécifications
| Attribut | Valeur |
| Part Status | Obsolete |
| Sensor Type | Digital, Local |
| Sensing Temperature - Local | -55°C ~ 125°C |
| Output Type | 1-Wire® |
| Voltage - Supply | 2.7V ~ 5.5V |
| Resolution | 8 b |
| Features | One-Shot, Output Switch, Programmable Limit, Standby Mode |
| Accuracy - Highest (Lowest) | ±1°C |
| Test Condition | 0°C ~ 85°C |
| Operating Temperature | -55°C ~ 125°C |
| Mounting Type | Surface Mount |
| Package / Case | 8-SOIC (0.209", 5.30mm Width) |
| Supplier Device Package | 8-SOIC |
| Base Product Number | DS1821 |
Présentation
Description
DS1821S is a digital temperature sensor from Dallas/Maxim (DS18x family). It converts ambient temperature into a digital value and delivers it to a microcontroller over a serial data interface, eliminating the need for an external ADC. Key advantages are simple wiring, low power, and direct temperature readouts. Common features (datasheet varies by variant) include a wide operating range (roughly -55°C to +125°C), selectable resolution (often 9–12 bits), fast conversion, and the option to run from parasite power or a dedicated supply. Multiple devices can be connected on the same bus using unique addresses. Typical uses include HVAC monitoring, environmental sensing, thermostats, and embedded temperature logging. For exact interface, timing, pinout, and electrical characteristics, refer to the specific DS1821S datasheet, since implementations can differ by package and protocol variant.
Pinout
- Pin count: 8 pins (DIP-8/SO-8 package).
- Function: Digital thermometer/temperature sensor. It measures temperature and provides calibrated digital data over a two-wire serial interface (I2C-like) to a microcontroller, using a single-supply operation.
- Function: Digital thermometer/temperature sensor. It measures temperature and provides calibrated digital data over a two-wire serial interface (I2C-like) to a microcontroller, using a single-supply operation.
Manufacturer
- Manufacturer: Dallas Semiconductor (an American semiconductor company; the Dallas/Dallas Semiconductor line is now part of Analog Devices, after acquisitions with Maxim Integrated).
- What kind of company: A semiconductor company that designs and manufactures integrated circuits and microelectronic components.
- What kind of company: A semiconductor company that designs and manufactures integrated circuits and microelectronic components.
Application
DS1821S is a digital temperature sensor used for precise temperature monitoring in many fields. Common application areas:
- Home and consumer electronics: smart thermostats, refrigerators, ovens, climate control
- Industrial and process control: monitoring in machines, motors, pumps, molds, manufacturing lines
- Automotive and transportation: engine bay, cabin sensing, battery management
- Medical devices and lab equipment: temperature monitoring of samples and storage
- Data logging and environmental monitoring: remote sensing, weather stations, environmental chambers
- Agriculture and greenhouse control: crop storage and climate regulation
- Home and consumer electronics: smart thermostats, refrigerators, ovens, climate control
- Industrial and process control: monitoring in machines, motors, pumps, molds, manufacturing lines
- Automotive and transportation: engine bay, cabin sensing, battery management
- Medical devices and lab equipment: temperature monitoring of samples and storage
- Data logging and environmental monitoring: remote sensing, weather stations, environmental chambers
- Agriculture and greenhouse control: crop storage and climate regulation
Package
DS1821S is an 8-pin package (DIP-8); also available in an SOIC-8 option.
