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
Low wiper resistance: 80Ω 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: 10kΩ, 50kΩ and
100kΩ. 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
H
V
DD
GND
UP-DOWN
COUNTER
32-POSITION
DECODER
CS
W
U/D
PIN CONFIGURATION
SOT-23
V
DD
1
6
H
V
DD
1
L
SOT-23
5
H
V
DD
1
SOT-23
6
H
GND 2
5 W
GND 2
GND 2
5 L
U/D 3
CAT5110
CAT5125
4
CS
U/D 3
CAT5118
CAT5123
4
CS
U/D 3
CAT5119
CAT5124
4
CS
SC-70
V
DD
1
6
H
V
DD
1
SC-70
5
H
V
DD
1
SC-70
6
H
GND 2
5 W
GND 2
GND 2
5 L
U/D 3
CAT5110
4
CS
U/D 3
CAT5118
4
CS
U/D 3
CAT5119
4
CS
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
1
Doc. No. MD-2120 Rev. J
CATALYST [ CATALYST SEMICONDUCTOR ]
