AD5121BCPZ100-RL7

AD5121 is a single channel, 128position, 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, programmable power supplies.

• Single- and dual-supply operation
• Linear gain setting mode, VW settling time is 2µs typical at (RAB = 10Kohm, VDD = 2.3V to 5.5V)
• Independent logic supply range from 1.8V to 5.5V
• Resistance is 100Kohm, fast start-up time is 75µs
• Resistance temperature coefficient is 35ppm/°C typical at (VDD = 2.3V to 5.5V)
• Bandwidth is 3MHz typical at (RAB = 10Kohm, VDD = 2.3V to 5.5V)
• Resistor tolerance is 8% maximum, wiper current is ±6mA
• Resistor noise density is 7nV/√Hz typical at (VDD = 2.3V to 5.5V)
• Resistor integral nonlinearity is ±0.2LSB typical at (VDD = 2.3V to 5.5V)
• Operating temperature is -40°C to +125°C, package style is 16-lead LFCSP

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