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CAT5114U-10TE13 Datasheet(PDF) 1 Page - Catalyst Semiconductor

Part # CAT5114U-10TE13
Description  32-Tap Digitally Programmable Potentiometer (DPP)
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Manufacturer  CATALYST [Catalyst Semiconductor]
Direct Link  http://www.catalyst-semiconductor.com
Logo CATALYST - Catalyst Semiconductor

CAT5114U-10TE13 Datasheet(HTML) 1 Page - Catalyst Semiconductor

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Advance Information
© 2001 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
Doc. No. 25091-00 Rev. 3/28/01
M-1
CAT5114
32-Tap Digitally Programmable Potentiometer (DPP)
FEATURES
s 32 Position Linear Taper Potentiometer
s Nonvolatile Wiper Storage
s Low Power CMOS Technology
s Single Supply Operation: 2.5V-6.0V
s Increment Up/Down Serial Interface
s Resistance Values: 10K, 20K, 50K and 100K
s Available in PDIP, SOIC, TSSOP and MSOP packages
APPLICATIONS
s Automated Product Calibration
s Remote Control Adjustments
s Offset, Gain and Zero Control Systems
s Tamper-Proof Calibrations
s Contrast, Brightness and Volume Controls
s Motor Controls and Feedback Systems
s Programmable Analog Functions
new system values without effecting the stored
setting.
Wiper-control
of
the
CAT5114
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 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
DESCRIPTION
The CAT5114 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.
The CAT5114 contains a 32-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
ONE
OF
THIRTY TWO
DECODER
31
30
29
28
2
1
0
TRANSFER
GATES
RESISTOR
ARRAY
RH
L
R
H
V
V
L /
/
V
W
R
W
/
5-BIT
NONVOLATILE
MEMORY
STORE AND
RECALL
CONTROL
CIRCUITRY
U
/D
INC
CS
Vcc
VSS
5-BIT
UP/DOWN
COUNTER
RH
V
W
L
R
R
H
V
V
W
L
/
/
/
GENERAL
DETAILED
Implementation of the
Electronic Potentiometer
(
INC)
(U/
D)
(
CS)
Control
and
Memory
INCREMENT
UP/DOWN
DEVICE SELECT
Vcc (Supply Voltage)
(Ground)
VSS
GENERAL
RH
V
W
L
R
R
H
V
V
W
L /
/
/


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