Description

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.

Features

• 0.3 A Ultra−low Standby Current

• Single−supply Operation: 2.7 V to 5.5 V

• Glitchless Switching between Resistor Taps

• Power−on Reset to Midscale

• 2−wire Up/Down Serial Interface

• Resistance Values: 10 k, 50 kand 100 k

• Available in SC−70 and SOT−23 Packages

• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS Compliant

Applications

• LCD Screen Adjustment

• Volume Control

• Mechanical Potentiometer Replacement

• Gain Adjustment

• Line Impedance Matching