Digital Temperature Sensor Chip - T1820

The chip integrates a 16-bit ADC with a resolution of 0.004°C and has an ultra-wide operating range from -103°C to +153°C. The chip undergoes 100% testing and calibration before leaving the factory, fitting calibration coefficients based on temperature error characteristics, with internal automatic compensation calculation. To simplify system application, the chip's ID search, temperature data memory access, and function configuration are all based on digital single-bus protocol (One Wire, OW) commands. The host microprocessor only needs one GPIO port for read/write access. The single-bus communication interface enables multi-node sensor acquisition and networking through a shared data bus, offering a low-cost solution with long transmission distance and support for many nodes, facilitating spatially distributed sensor networking. It can support up to 100 nodes with 100 to 500 meters of temperature measurement nodes in series.

The chip includes non-volatile E2PROM storage units for saving chip ID, high and low temperature alarm thresholds, temperature calibration correction values, and user-defined information such as sensor node numbers and location information.

1.Features of Digital Temperature Sensor Chip - T1820:

Temperature measurement range: -103°C to +153°C
Low power consumption: typical standby current 0.01µA, average measurement current 2µA (AVG=8, 1 measurement/s)
Wide operating voltage range: 1.8V to 5.5V
Customizable temperature measurement accuracy: ±0.1°C/±0.5°C
Temperature measurement resolution: 16-bit output 0.004°C
Configurable temperature conversion time: 15.3ms/8.5ms/5.2ms/2.2ms
Up to 112 bits of additional E2PROM space for user information
Standard single-bus interface
Heater chip self-diagnosis function

2.Applications of Digital Temperature Sensor Chip - T1820: