CAT5110, CAT5118, CAT5119
CAT5123, CAT5124, CAT5125
32-Tap MiniPot™ Digitally Programmable
Potentiometers with 2-Wire Interface
FꢀATuꢁꢀꢂ
DꢀꢂCꢁIPTIꢄꢅ
■ 0.3µA ultra-low standby cꢃrrent
■ ꢂingle-sꢃpply operation: 2.7V to 5.5V
■ Glitchless switching between resistor taps
■ Power-on reset to midscale
CAT5ꢀꢀ0/5ꢀꢀ8/5ꢀꢀ9/5ꢀ23/5ꢀ24/5ꢀ25 linear-taper
digitallyprogrammablepotentiometersperformthesame
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.
■ 2-wire ꢃp/down serial interface
■ Resistance values: 10kΩ, 50kΩ and 100kΩ
The CAT5110 and CAT5125 are configured as poten-
tiometers. The CAT5118/19/23/24 are configured as
variable resistors.
■ Low wiper resistance: 80Ω for
CAT5123, CAT5124, CAT5125
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 CAT5ꢀꢀ0/5ꢀꢀ8/5ꢀꢀ9
are also available in the SC70 package.
■ CAT5110, CAT5118, CAT5119 available in ꢂC70
APPꢆICATIꢄꢅꢂ
■ ꢆCD screen adjꢃstment
■ Volꢃme control
FuꢅCTIꢄꢅAꢆ DIAGꢁAM
H
■ Mechanical potentiometer replacement
■ Gain adjꢃstment
V
DD
GND
CS
■ ꢆine impedance matching
W
For ꢄrdering Information details, see page 11.
U/D
PIꢅ CꢄꢅFIGuꢁATIꢄꢅ
L
ꢂꢄT-23
ꢂꢄT-23
ꢂꢄT-23
V
ꢀ
2
3
6
5
4
H
V
ꢀ
2
3
6
5
4
H
V
ꢀ
2
3
5
4
H
DD
DD
DD
GND
U/D
L
GND
U/D
W
CS
GND
U/D
CAT5119
CAT5124
CAT5110
CAT5125
CAT5118
CAT5123
CS
CS
ꢂC70
ꢂC70
ꢂC70
V
ꢀ
2
3
6
5
4
H
V
ꢀ
2
3
6
5
4
H
V
ꢀ
2
3
5
4
H
DD
DD
DD
GND
U/D
L
GND
U/D
W
CS
GND
U/D
CAT5110
CAT5118
CAT5119
CS
CS
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
Doc. No. MD-2ꢀ20, Rev. I
ꢀ