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

0.3µA 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, 50kΩand 100kΩ

Available in SC-70 and SOT-23 packages

APPLICATIONS

LCD screen adjustment

Volume control

Mechanical potentiometer replacement

Gain adjustment

Line impedance matching