CAT5120/5121/5122 linear-taper digitally programmable potentiometers perform the same function as a mechanical potentiometer or a variable resistor. These devices consist of a fixed resistor and a wiper contact with 16-tap points that are digitally controlled through a 2-wire up/down serial interface.
The CAT5120 is configured as a potentiometer. The CAT5121 and CAT5122 are configured as variable resistors. See Pin Configurations for part functionality. Three resistance values are available: 10kΩ, 50kΩ and 100kΩ. These are available in space-saving 5-pin and 6-pin SC-70 and SOT-23 packages.

*0.3μA Ultra-low standby current
*Single-supply operation: 2.7V to 5.5V
*Glitchless switching between resistor taps
*Power-on reset to midscale
*2-wire up/down serial interface
*Resistance values: 10kΩ, 50kΩ and 100kΩ
*Available in SC-70 and SOT-23 packages

*LCD screen adjustment
*Volume control
*Mechanical potentiometer replacement
*Gain adjustment
*Line impedance matching

CAT5120SDI-10-GT3, CAT5120TBI-10-T3, CAT5120TBI-10-GT3, CAT5120SDI-50-GT3

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