DS1841N+

The DS1841N+ 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.

• Supply voltage range is 2.7V to 5.5V
• Operating temperature range from -40°C to 100°C
• 22Kohm to 3.7Kohm adjustable logarithmic resistor with a 3.6Kohm fixed resistor
• 128 wiper tap points
• End to end resistance is 22Kohm at ±20% tolerance and temperature coefficient is 250ppm/°C

Applications

Signal Processing, Automation & Process Control

Warnings

Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts.

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party