DS1726：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
| DS1626, DS1726: Functional Diagram Applications/Uses
|
DataSheet
| title | Download file |
|---|---|
| DS1626-DS1726 Data Sheet | DS1626-DS1726.pdf |
Parametrics
| Part Number | Sensor Type | Functions | Interface | Channels | Accuracy (±°C) | Parasite Pwr. | Temp. Thresh. | Temp. Resolution (bits) | Oper. Temp. (°C) | Package/Pins | Budgetary Price |
|---|---|---|---|---|---|---|---|---|---|---|---|
| See Notes | |||||||||||
| DS1626 | Local | Dual Temperature Alarms Standalone Thermostat | 3-Wire Logic | One | 0.5 | No | Programmable (NV) | 9 10 11 12 | -55 to +125 | µMAX/8 SOIC/8 | $1.82 @1k |
| DS1726 | 1 | µMAX/8 | $1.79 @1k | ||||||||
| Part Number | Functions | Interface | Accuracy (±°C) | Temp. Thresh. (°C) | Package/Pins | Budgetary Price |
|---|---|---|---|---|---|---|
| See Notes | ||||||
| DS1626 | Dual Temperature Alarms Standalone Thermostat | 3-Wire Logic | 0.5 | Programmable | µMAX/8 SOIC/8 | $1.82 @1k |
| DS1726 | 1 | µMAX/8 | $1.79 @1k | |||
Quality and Environmental Data
Ordering Information
| Part Number | Status | Recommended Replacement | Package | Temp | RoHS |
|---|---|---|---|---|---|
| DS1726U | No Longer Available | DS1726U+ | µMAX,;8 pin;15.6 mm² | -55°C to +125°C | No |
| DS1726U+ | Active | µMAX,;8 pin;15.6 mm² | -55°C to +125°C | Lead Free | |
| DS1726U+T&R | Active | µMAX,;8 pin;15.6 mm² | -55°C to +125°C | Lead Free | |
| DS1726U/GG8 | Active | µMAX,;8 pin;15.6 mm² | -55°C to +125°C | No | |
| DS1726U/T&R | No Longer Available | DS1726U+T&R | µMAX,;8 pin;15.6 mm² | -55°C to +125°C | No |
- DS1626-DS1726.pdf DS1726
