CAT5110, CAT5118, CAT5119
32-Tap MiniPotTM Digitally Programmable Potentiometers
with 2-Wire Interface
FEATURES
s
0.3
A Ultra-low supply current
s
Single-supply operation: 2.7 V to 5.5 V
s
Glitchless switching between resistor taps
s
Power-on reset to midscale
APPLICATIONS
s
LCD screen adjustment
s
Volume control
s
Mechanical potentiometer replacement
PIN CONFIGURE
DESCRIPTION
CAT5110/5118/5119 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.
2005 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
Doc. No. 2120, Rev. A
1
HA
LOGEN FREE
TM
LEAD FREE
The CAT5110 is configured as a potentiometer. The
CAT5118 and CAT5119 are configured as variable
resistors. See Pin Configurations for part functionality.
Three resistance values are available: 10k
, 50k
and
100k
. These are available in space-saving 5-pin and
6-pin SC70 and SOT-23 packages.
s
2-Wire up/down serial interface
s
Resistance values: 10k
,
,
,
,
,
50k
and 100k
s
Available in SC70 and SOT-23 packages
s
Gain adjustment
s
Line impedance matching
FUNCTIONAL DIAGRAM
V
DD
GND
CS
H
L
W
U/D
UP/DN
Counter
32-Position
Decoder
GND
CS
U/D
1
5 H
V
DD
2
CAT5118
3
4
GND
CS
U/D
1
6 H
V
DD
2
3
4
W
5
CAT5110
GND
CS
U/D
1
6 H
V
DD
2
L
5
CAT5119
3
4
Top View
CAT5110/5118/5119
5
Doc. No. 2120, Rev. A
Operating Temperature Range ........... -40
C to +85C
Junction Temperature ...................................... +150C
Storage Temperature Range ............ -65C to +150C
Soldering Temperature (soldering, 10s) .......... +300C
*(derate 3.1mW/C above T
A
= +70C)
COMMENT
Stresses above those listed under "Absolute Maximum Ratings" may
cause permanent damage to the device. These are stress ratings only,
and functional operation of the device at these or any other conditions
outside of those listed in the operational sections of this specification is not
implied. Exposure to any absolute maximum rating for extended periods
may affect device performance and reliability.
ABSOLUTE MAXIMUM RATINGS
V
DD
to GND........................................... -0.3 V to +6 V
All Other Pins to GND .............. -0.3 V to (V
DD
+ 0.3) V
Input and Output Latch-Up Immunity ............ +200 mA
Maximum Continuous Current into H, L and W
100k
...................................................................
+0.6 mA
50k
......................................................................
+1.3 mA
10k
......................................................................
+1.3 mA
Continuous Power Dissipation (T
A
= +70C)
5-pin SC70* .................................................... 247 mW
6-pin SC70* .................................................... 245 mW
ELECTRICAL CHARACTERISTICS
(V
DD
= 2.7 V to 5.5 V, V
H
= V
DD
, V
L
= 0, T
A
= -40C to 85C. Typical values are at V
DD
= 2.7 V, T
A
= 25C, unless
otherwise noted).
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