The DS1726 is the next generation versions of the DS1720 digital thermometer and thermostat. While the DS1720 provides ±2.5°C accuracy, the DS1726 provides ±1.0°C accuracy and thermostat capability at a lower cost. Unlike the DS1720, the DS1726 allows the user to select 9-, 10-, 11-, or 12-bit output resolution by setting two bits in the configuration register. This provides simplified high resolution temperature measurements without the need to perform calculations.
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.
Key Features
Applications/Uses
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
Download
E-Mail