The DS1847 is a temperature controlled variable resistor from Texas Instruments, which has two linear variable resistors. The resistors can be changed every 2°C in the range of -40°C to +95°C. The device can access temperature data and device control via a 2-wire serial bus.
The DS1847 is a dual temperature-controlled Nonvolatile (NV) Variable Resistor that consists of two 256-position linear, variable resistors. The device includes one 50kΩ and one 10kΩ resistor in the DS1847-050 variant, or two 10kΩ resistors in the DS1847-010 variant. Both versions incorporate a direct-to-digital temperature sensor.
| Supply Voltage | +3.0V to +5.5V |
|---|---|
| Operating Temperature Range | -40°C to +95°C |
| Programming Temperature Range | 0°C to +70°C |
The device operates from -40°C to +95°C.
The value is determined by a temperature-addressed look-up table that assigns a unique value for every 2°C increment.