High-Precision 3-Wire Digital Thermometer and Thermostat
High-Precision, 3-Wire Digital Thermometers/Thermostats Provide Temperature Measurements and Stand-Alone Thermostat Capability over a -55°C to +125°C Range
The DS1626 and DS1726 digital thermometers/thermostats provide temperature measurements and stand-alone thermostat capability over a -55°C to +125°C range. The DS1626 offers ±0.5°C accuracy from 0°C to +70°C and the DS1726 has ±1°C accuracy from -10°C to +85°C. The resolution of the measured temperature is user selectable from 9 to 12 bits. Communication with the DS1626 and DS1726 is achieved through a 3-wire serial bus.
The DS1626 and DS1726 offer thermostatic functionality with three dedicated thermostat outputs (THIGH, TLOW, and TCOM), and overtemperature (TH) and undertemperature (TL) user-programmable thresholds stored in on-chip EEPROM. For stand-alone thermostat operation, TH and TL can be programmed prior to installation, and the DS1626/DS1726 can be configured to automatically begin taking temperature measurements at power-up. Table 1, in the full data sheet, summarizes the user-accessible registers. Figure 1, in the full data sheet, shows a functional diagram.
Key Features
Applications/Uses
Temperature Measurements Require No External Components
Measure Temperatures from -55°C to +125°C (-67°F to +257°F)
DS1626: ±0.5°C Accuracy from 0°C to +70°C
DS1726: ±1°C Accuracy from -10°C to +85°C
Output Resolution is User Selectable to 9, 10, 11, or 12 Bits
Wide Power-Supply Range (2.7V to 5.5V)
Convert Temperature to Digital Word in 750ms (max)
Stand-Alone Thermostat Capability
Thermostatic Settings are User Definable and Nonvolatile (NV)
Data is Read/Written Through a 3-Wire Serial Interface
Available in 8-Pin µSOP Package
Any Space-Constrained Thermally Sensitive Application
Notes: **This pricing is BUDGETARY, for comparing similar parts. Prices are in
U.S. dollars and subject to change. Quantity pricing may vary
substantially and international prices may differ due to local
duties, taxes, fees, and exchange rates. For volume-specific prices
and delivery, please see the price and availability page
or contact an authorized distributor.
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