DS1626

Voltage on Any Pin Relative to Ground .........-0.5V to +6.0V
Operating Temperature Range ..............-55°C to +125°C
Storage Temperature Range.................. -55°C to +125°C
Solder Dip Temperature (10s)................................ +260°C
Reflow Oven Temperature..................................... +220°C

* These are stress ratings only and functional operation of the device at these or any other conditions above those indicated in the operation sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability.

The DS1626 and DS1726 digital thermometers/thermostats provide temperature measurements and standalone 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 over-temperature (TH) and under-temperature (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.

Pin descriptions for the DS1626 and DS1726 are provided in Table 2 and user-accessible registers are summarized in Table 3. A functional diagram is shown in Figure 1.