AD5121BCPZ10-RL7

AD5121BCPZ10-RL7 is a single-channel, 128-position, I²C/SPI, non-volatile digital potentiometer. The low resistor tolerance and low nominal temperature coefficient simplify open-loop applications as well as applications requiring tolerance matching. The linear gain setting mode allows independent programming of the resistance between the digital potentiometer terminals, through RAW and RWB string resistors, allowing very accurate resistor matching. The high bandwidth and low total harmonic distortion (THD) ensure optimal performance for AC signals, making it suitable for filter design. The low wiper resistance of only 40 ohm at the ends of the resistor array allows for pin-to-pin connection. It is used in applications such as portable electronics level adjustment, LCD panel brightness and contrast controls, programmable filters, delays, and time constants, and programmable power supplies.

• Resistor differential nonlinearity is ±0.1LSB typical at (VDD = 2.3V to 5.5V, VSS = 0V)
• Resistance temperature coefficient is 35ppm/°C typical at (Code = full scale, VDD = 2.3V to 5.5V)
• Logic supply voltage range from 1.8V to 5.5V, power dissipation is 3.5µW typical
• 3MHz typical -3dB bandwidth at (RAB = 10Kohm, VDD = 2.3V to 5.5V, VSS = 0V)
• Total harmonic distortion is -80dB typical at (RAB = 10Kohm, VDD = 2.3V to 5.5V)
• Resistor noise density is 7nV/√Hz typical at (RAB = 10Kohm, VDD = 2.3V to 5.5V, VSS = 0V)
• VW settling time is 2µs typical at (RAB = 10Kohm, VDD = 2.3V to 5.5V, VSS = 0V)
• Nominal resistor tolerance is +8% maximum at (VDD = 2.3V to 5.5V, VSS = 0V)
• Power supply rejection ratio is -66dB typical at (∆VDD/∆VSS = VDD ±10%, code = full scale)
• Operating temperature range from -40°C to +125°C, 16-lead LFCSP package

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