32-Tap MiniPot Digitally Programmable Potentiometers with 2-Wire 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: 10k , 50k and 100k Low wiper resistance: 80 for CAT5123, CAT5124, CAT5125

CAT5110, CAT5118, CAT5119 available in SC-70

DESCRIPTION

CAT5110/18/19/23/24/25 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 32-tap points that are digitally controlled through a 2-wire up/down serial interface.

The CAT5110 and CAT5125 are configured as potentiometers. The CAT5118/19/23/24 are configured as variable resistors.

Three resistance values are available: 10k , 50k and 100k . All devices are available in space-saving 5-pin and 6-pin SOT-23 packages. The CAT5110/18/19 are also available in the SC-70 package.

APPLICATIONS

LCD screen adjustment Volume control

Mechanical potentiometer replacement Gain adjustment

Line impedance matching

FUNCTIONAL DIAGRAM

For Ordering Information details, see page 11.

PIN CONFIGURATION

SOT-23

VSOT-23

SOT-23

H

L

U/DCS

SC-70

VSC-70

SC-70

H

L

U/DCS

© Catalyst Semiconductor, Inc.

Characteristics subject to change without notice

1

Doc. No. MD-2120 Rev. J