H
CAT5113
EE
GEN FR
ALO
100-Tap Digitally Programmable Potentiometer (DPP™)
LE
A D F R E ETM
FEATURES
APPLICATIONS
s 100-position linear taper potentiometer
s Automated product calibration
s Non-volatile EEPROM wiper storage
s Remote control adjustments
s 10nA ultra-low standby current
s Offset, gain and zero control
s Single supply operation: 2.5V-6.0V
s Tamper-proof calibrations
s Increment Up/Down serial interface
s Contrast, brightness and volume controls
s Resistance values: 10kΩ , 50kΩ and 100kΩ
Ω
Ω
Ω
s Motor controls and feedback systems
s Available in PDIP, SOIC, TSSOP and MSOP packages
s Programmable analog functions
DESCRIPTION
The CAT5113 is a single digitally programmable
potentiometer (DPP™) designed as a electronic
replacement for mechanical potentiometers and trim
pots. Ideal for automated adjustments on high volume
production lines, they are also well suited for
applications where equipment requiring periodic
adjustment is either difficult to access or located in a
hazardous or remote environment.
new system values without effecting the stored
setting. Wiper-control of the CAT5113 is
accomplished with three input control pins, CS, U/D,
and INC. The INC input increments the wiper in the
direction which is determined by the logic state of
the U/D input. The CS input is used to select the
device and also store the wiper position prior to
power down.
The CAT5113 contains a 100-tap series resistor array
connected between two terminals RH and RL. An up/
down counter and decoder that are controlled by three
input pins, determines which tap is connected to the
wiper, RW. The wiper setting, stored in nonvolatile
memory, is not lost when the device is powered
down and is automatically reinstated when power
is returned. The wiper can be adjusted to test
The digitally programmable potentiometer can be
used as a three-terminal resistive divider or as a
two-terminal variable resistor. DPPs bring variability and
programmability to a wide variety of applications
including control, parameter adjustments, and
signal processing.
FUNCTIONAL DIAGRAM
VH /R H
U/D
INC
CS
Vcc (Supply Voltage)
98
R H / VH
97
UP/DOWN
(U/D)
7-BIT
NONVOLATILE
MEMORY
Control
and
Memory
R W / VW
POR
INCREMENT
(INC)
R H / VH
99
7-BIT
UP/DOWN
COUNTER
R L / VL
ONE
28
OF
ONE HUNDRED
DECODER
TRANSFER
GATES
VW / R W
RESISTOR
ARRAY
2
DEVICE SELECT
(CS)
Vcc
VSS
STORE AND
RECALL
CONTROL
CIRCUITRY
1
0
GND
R L / VL
R W / VW
GENERAL
GENERAL
© 2004 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
DETAILED
1
VL / R L
ELECTRONIC POTENTIOMETER
IMPLEMENTATION
Doc. No. 2009, Rev. N
