AD5122BCPZ10-RL7

AD5122BCPZ10-RL7 is a dual channel, 128-position, 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 the RAW and RWB string resistors, allowing accurate resistor matching. The high bandwidth and low total harmonic distortion (THD) ensure optimal performance for AC signals, making this device suitable for filter design. The low wiper resistance of only 40 ohm at the ends of the resistor array allows a 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.

• Linear gain setting mode, single- and dual-supply operation
• Independent logic supply voltage range from 1.8V to 5.5V
• Resistor integral nonlinearity is ±0.1LSB typical at (RAB = 10Kohm, VDD ≥ 2.7V)
• Resistance temperature coefficient is 35ppm/°C typical at (code = full scale, VDD = 2.3V to 5.5V)
• Bandwidth is 3MHz typical at (RAB = 10Kohm, VDD = 2.3V to 5.5V, VSS = 0V)
• 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)
• Power supply rejection ratio is -66dB typical at (∆VDD/∆VSS = VDD ±10%, code = full scale)
• Power dissipation is 3.5µW typical at (VIH = VLOGIC or VIL = GND), SPI interface, RAB is 10Kohm
• Operating temperature range from -40°C to +125°C, 16-lead LFCSP-WQ package

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