AD5271BCPZ-20-RL7

AD5271BCPZ-20-RL7 is a single-channel, 256-position digital rheostat that combines industry-leading variable resistor performance with non-volatile memory (NVM) in a compact package. It ensures less than 1% end-to-end resistor tolerance error and offers 50-times programmable (50-TP) memory. The guaranteed industry-leading low resistor tolerance error feature simplifies open-loop applications as well as precision calibration and tolerance matching applications. This device wiper settings are controllable through the SPI digital interface. Unlimited adjustments are allowed before programming the resistance value into the 50-TP memory. It is used in applications such as mechanical rheostat replacements, op-amp: variable gain control, instrumentation: gain, offset adjustment, programmable voltage to current conversions, programmable filters, delays, time constants, programmable power supply, and sensor calibration.

• Nominal resistance is 20Kohm, SPI-compatible interface, wiper setting readback
• Resistor differential nonlinearity is +1LSB max at (VDD = 2.7V to 5.5V, VSS = 0V)
• Resistance temperature coefficient is 5ppm/°C typ at (VDD = 2.7V to 5.5V, VSS = 0V)
• 300KHz bandwidth at (RAW = 20Kohm, VDD = 2.7V to 5.5V, VSS = 0V)
• Resistor noise density is 13nV/√Hz typical at (RAW = 20Kohm, VDD = 2.7V to 5.5V, VSS = 0V)
• Single-supply power range from 2.7V to 5.5V
• Dual-supply power range from ±2.5V to ±2.75V
• Power supply rejection ratio is -66dB typical at (ΔVDD/ΔVSS = ±5V ±10% dB, RAW = 20Kohm)
• Total harmonic distortion is -90dB typical at (RAW = 20Kohm, VDD = 2.7V to 5.5V, VSS = 0V)
• Operating temperature range from -40°C to +125°C, 10-lead LFCSP package

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