CAT5123 Datasheet, PDF (1/16 Pages) Catalyst Semiconductor – 32-Tap MiniPot TM Digitally Programmable Potentiometers with 2-Wire Interface

CAT5110, CAT5118, CAT5119
CAT5123, CAT5124, CAT5125
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: 10kΩ, 50kΩ and 100kΩ
■ All devices available in SOT-23 package
■ CAT5110, CAT5118, CAT5119 also available in
SC70
Applications
■ LCD screen adjustment
■ Volume control
■ Mechanical potentiometer replacement
■ Gain adjustment
■ Line impedance matching
For Ordering Information details, see page 11.
DEscription
CAT5110/5118/5119/5123/5124/5125 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 poten-
tiometers. The CAT5118/19/23/24 are configured as
variable resistors.
Three resistance values are available: 10kΩ, 50kΩ and
100kΩ. All devices are available in space-saving 5-pin
and 6-pin SOT-23 packages. The CAT5110/5118/5119
are also available in the SC70 package.
Functional Diagram
H
V_DD
GND
CS
W
U/D
Pin Configuration
sOT-23
V_DD 
6H
sOT-23
sOT-23
V_DD 
5H
V_DD 
6H
GND 2
5W
CAT5110
U/D 3 CAT5125 4 CS
GND 2
CAT5118
U/D 3 CAT5123
GND 2
5L
CAT5119
4 CS U/D 3 CAT5124 4 CS
sC70
V_DD 
6H
sC70
V_DD 
5H
V_DD 
sC70
6H
GND 2
5 W GND 2
GND 2
5L
U/D 3 ^CAT5110 4 CS U/D 3 ^CAT5118 4 CS U/D 3 ^CAT5119 4 CS
© 2007 by Catalyst Semiconductor, Inc.

Characteristics subject to change without notice
L
Doc. No. 2120, Rev. E