DS1621

PRODUCTION

DS1621

Digital Thermometer and Thermostat

PRODUCTION

Not the part you were looking for?

Go to Product Selection Table

View All Documentation

Ask a Question

Submit your question below and we will return the best answer from ADI’s knowledge database:

Other places you can find help

Support

Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.

Visit the ADI Support Page

Ask the ADI community for help.

Ask the EngineerZone Community

FAQs

Sales & Ordering FAQs

Part Models 5

1ku List Price Starting From $3.64

Features

Simply Adds Temperature Monitoring and Control to Any System
- Measures Temperatures From -55°C to +125°C in 0.5°C Increments. Fahrenheit Equivalent is -67°F to 257°F in 0.9°F Increments
- Temperature is Read as a 9-Bit Value (2-Byte Transfer)
- Converts Temperature to Digital Word in Less than 1s
- Thermostatic Settings are User Definable And Nonvolatile
Can Be Used in a Wide Variety of Applications
- Power Supply Range (2.7V to 5.5V)
- Data is Read From/Written Via a 2-Wire Serial Interface (Open Drain I/O Lines)
Saves Space
- Temperature Measurements Require No External Components
- 8-pin DIP or SO package (208-mil) Packages

Additional Details

The DS1621 Digital Thermometer and Thermostat provides 9-bit temperature readings, which indicate the temperature of the device. The thermal alarm output, T_OUT is active when the temperature of the device exceeds a user-defined temperature T_H. The output remains active until the temperature drops below user defined temperature T_L, allowing for any hysteresis necessary. User-defined temperature settings are stored in nonvolatile memory so parts may be programmed prior to insertion in a system. Temperature settings and temperature readings are all communicated to/from the DS1621 over a simple 2-wire serial interface.

Applications

Medical
Networking
Personal Computing
Routers/Switches
Test Measurement Systems
Wireless Base Stations

View All Documentation

Ask a Question

Submit your question below and we will return the best answer from ADI’s knowledge database:

Other places you can find help

Support

Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.

Visit the ADI Support Page

Ask the ADI community for help.

Ask the EngineerZone Community

FAQs

Sales & Ordering FAQs

Part Models 5

1ku List Price Starting From $3.64

Technical Documents 3

DS1621: Digital Thermometer and Thermostat Data Sheet (Rev.4) 04/03/2015

DS1621 Reliability Data 01/12/2023

Using the DS1631 Temperature Sensor in DS1621 Applications 04/10/2002

Design Resources 5

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
DS1621+	Plastic Dual-In-Line, Narrow (0.3in)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
DS1621S+	Small-Outline IC, Narrow (0.15in)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
DS1621S+T&R	Small-Outline IC, Narrow (0.15in)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
DS1621V+	Small-Outline IC (0.208in)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
DS1621V+T&R	Small-Outline IC (0.208in)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys