DS1720
NOT RECOMMENDED FOR NEW DESIGNSEcon-Digital Thermometer and Thermostat
- Part Models
- 2
- 1ku List Price
- Starting From $3.21
Overview
- Requires no external components
- Supply voltage range covers from 2.7V to 5.5V
- 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
- Converts temperature to digital word in 1 second (max)
- Thermostatic settings are user-definable and non-volatile
- Data is read from/written via a 3-wire serial interface (CLK, DQ, active-low RST)
- Applications include thermostatic controls, industrial systems, consumer products, thermometers, or any thermally sensitive system
- 8-pin SOIC (208 mil) package
The DS1720 Digital Thermometer and Thermostat provides 9-bit temperature readings which indicate the temperature of the device. With three thermal alarm outputs, the DS1720 can also act as a thermostat. THIGH is driven high if the DS1720's temperature is greater than or equal to a user-defined temperature TH. TLOW is driven high if the DS1720's temperature is less than or equal to a user-defined temperature TL. TCOM is driven high when the temperature exceeds TH and stays high until the temperature falls below that of TL.
User-defined temperature settings are stored in non-volatile memory, so parts can be programmed prior to insertion in a system, as well as used in stand-alone applications without a CPU. Temperature settings and temperature readings are all communicated to/from the DS1720 over a simple 3-wire interface.
Applications
- Consumer Products
- Industrial Systems
- Thermally Sensitive Systems
- Thermometers
- Thermostatic Controls
Documentation
Data Sheet 1
Reliability Data 1
Technical Articles 1
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 |
|---|---|---|---|
| DS1720S+ | Small-Outline IC (0.208in) | ||
| DS1720S+T&R | Small-Outline IC (0.208in) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Feb 26, 2025 - 2464 PIN/ERRATA |
||
| DS1720S+ | PRODUCTION | |
| DS1720S+T&R | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Analog to Digital Converters (ADCs) 1 | ||
| DS1626 | PRODUCTION | High-Precision 3-Wire Digital Thermometer and Thermostat |
Tools & Simulations
IBIS Model 1
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