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CAT5113 Datasheet(PDF) 1 Page - Catalyst Semiconductor

No. de pieza CAT5113
Descripción Electrónicos  100-Tap Digitally Programmable Potentiometer (DPP??
Download  13 Pages
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Fabricante Electrónico  CATALYST [Catalyst Semiconductor]
Página de inicio  http://www.catalyst-semiconductor.com
Logo CATALYST - Catalyst Semiconductor

CAT5113 Datasheet(HTML) 1 Page - Catalyst Semiconductor

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CAT5113
© 2007 Catalyst Semiconductor, Inc.
1
Doc. No. MD-2009 Rev. T
Characteristics subject to change without notice
100-Tap Digitally Programmable Potentiometer (DPP™)
FEATURES
100-position linear taper potentiometer
Non-volatile EEPROM wiper storage
10nA ultra-low standby current
Single supply operation: 2.5V – 6.0V
Increment up/down serial interface
Resistance values: 1kΩ, 10kΩ, 50kΩ and 100kΩ
Available in PDIP, SOIC, TSSOP and MSOP
packages
APPLICATIONS
Automated product calibration
Remote control adjustments
Offset, gain and zero control
Tamper-proof calibrations
Contrast, brightness and volume controls
Motor controls and feedback systems
Programmable analog functions
For Ordering Information details, see page 12.
DESCRIPTION
The CAT5113 is a single digitally programmable
potentiometer (DPP™) designed as a electronic
replacement for mechanical potentiometers. 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 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 new
system values without affecting 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 digitally programmable potentiometer can be
used as a three-terminal resistive divider or as a two-
terminal variable resistor.
FUNCTIONAL DIAGRAM
RH
RL
Control
and
Memory
Power On Recall
VCC
GND
U/D
INC
CS
RH
RL
RW
RW
Electronic Potentiometer
Implementation
Detailed
General
ONE
OF
THIRTY TWO
DECODER
31
30
29
28
2
1
0
TRANSFER
GATES
RESISTOR
ARRAY
5-BIT
NONVOLATILE
MEMORY
STORE AND
RECALL
CONTROL
CIRCUITRY
5-BIT
UP/DOWN
COUNTER
VCC
GND
RH
RW
RL
U/D
INC
CS


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