The DS1721 2-Wire Digital Thermometer and Thermostat provides 12-bit temperature readings, which indicate the temperature of the device. Thermostatic settings and temperature readings are all communicated to/from the DS1721 over a simple 2-wire serial interface. No additional components are required; the device is truly a "temperature-to-digital" converter. The DS1721 has three address bits that allow a user to multidrop up to eight sensors along the 2-wire bus, greatly simplifying the bussing of distributed temperature sensing networks.
The DS1721 is a precision temperature sensor that provides 12-bit temperature readings over a simple 2-wire serial interface. It measures temperatures from -55°C to +125°C without requiring external components, acting as a true 'temperature-to-digital' converter.
The device features programmable thermostatic settings and allows for multipoint sensing by uniquely addressing up to eight sensors on the bus. Users can configure the conversion resolution between 9, 10, 11, or 12 bits to balance accuracy with speed, reducing maximum conversion time from 750ms to as low as 93.75ms.
| Accuracy | +1°C |
|---|---|
| Maximum Conversion Time (9-bit) | 93.75 ms |
| Power Supply Range | 2.7V to 5.5V |
The default state for the device is configured to perform 12-bit conversions.
Up to eight sensors can be connected because the device has three address bits.
The maximum conversion time for 9-bit resolution is 93.75 ms.