DS1822Z+T&R by Analog Devices

Econo 1-Wire Digital Thermometer


The DS1822 is a digital thermometer with ±2°C accuracy over a -10°C to +85°C range. Data is read out over a 1-Wire® serial bus in 2's complement format with 9 to 12 bits of resolution (user-programmable). The DS1822 offers thermostatic functionality with over-temperature (TH) and under-temperature (TL) user-programmable setpoints stored in on-chip EEPROM. An internal flag is set when the measured temperature is greater than TH or less than TL. If thermostatic operation is not required, the two bytes of EEPROM reserved for TH and TL may be used for general-purpose nonvolatile storage. Each DS1822 features a unique and unchangeable 64-bit silicon serial number, which serves as the bus address for the sensor. This allows multiple DS1822 devices to coexist on the same 1-Wire bus. The DS1822 may be locally powered via a 3.0V to 5.5V supply, or power can be derived from the 1-Wire data line ("parasite power"). The DS1822 is offered in 3-pin TO-92 (DS1822) and 150mil 8-pin SO (DS1822Z) packages. In addition, the DS1822 is available in a parasite-power only version, the DS1822-PAR. Also available is the high-precision DS18B20, which provides ±0.5°C accuracy and is software-compatible with the DS1822.

Where to Buy

Prices starting from US$2.83

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Farnell
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Newark Electronics
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element14
from US$3.09
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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
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°C to +125°C (-67°F to +257°F) ±2.0°C Accuracy from -10°C to +85°C Thermometer Resolution is User-Selectable from 9 to 12 Bits Converts Temperature to 12-Bit Digital Word in 750ms (max)
Requires No External Components
Measures temperatures from -55°C to +125°C (-67°F to +257°F)
±2.0°C Accuracy from -10°C to +85°C
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
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 Include Thermostatic Controls, Industrial Systems, Consumer Products, Thermometers, or Any Thermally Sensitive System

Specifications

Sensor Type Local
# Channels One
Interface 1-Wire
Accuracy (±°C) 2
Parasite Pwr. Yes
Temp. Thresh. Programmable (NV)
Temp. Resolution (bits) 9101112
Oper. Temp. (°C) -55 to +125
Package/Pins SOIC (N)/8TO92/3
BudgetaryPrice (See Notes) 2.02


DS1822Z+T&R IC Sensors by Analog Devices

THERMOMETER, DIGITAL, -55 TO 125DEG C

Status: Unknown
Series: -
RoHS: Compliant
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Specifications

RoHS Compliant YES

Alternative Descriptions

Digital Thermometer, Nsoic-8 | Newark Electronics
Econo 1-Wire Digital Thermomet | Analog Devices

Frequently Asked Questions

Where can I find additional details, specifications and documents for a DS1822Z+T&R ?

Additional datasheets, footprints and schematics for DS1822Z+T&R are listed on our Part Details page. You can also find images and similar parts to DS1822Z+T&R on this page.

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Is the DS1822Z+T&R RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for DS1822Z+T&R have stock available?

Authorised distributors including Newark Electronics, element14, Farnell and Analog Devices have stock available or on a lead time for DS1822Z+T&R .

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