DS1841N+

MAXIM INTEGRATED PRODUCTS  DS1841N+  非易失性数字电位器, 温度控制, 22 kohm, 单, I2C, 对数, ± 20%, 2.7 V

The is a temperature controlled, non-volatile, I²C logarithmic resistor in 10 pin TDFN package. It has an on-chip temperature sensor and associated analogue to digital converter ADC. The integrated temperature sensor indexes a 72 byte NV lookup table LUT. The LUT output can drive the resistor directly or be added to an NV initial-value register IVR to drive the resistor. This flexible architecture allows the DS1841 to provide a temperature-compensated resistor output with arbitrary slope. Programming is accomplished by an I²C-compatible interface which can operate at speeds of up to 400kHz.

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Supply voltage range is 2.7V to 5.5V

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Operating temperature range from -40°C to 100°C

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22Kohm to 3.7Kohm adjustable logarithmic resistor with a 3.6Kohm fixed resistor

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128 wiper tap points

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End to end resistance is 22Kohm at ±20% tolerance and temperature coefficient is 250ppm/°C