IC POT DIGITL 10K 32TAP 8SOIC

 

CAT5112VI-10-T3

Manufacturer Part NumberCAT5112VI-10-T3
DescriptionIC POT DIGITL 10K 32TAP 8SOIC
ManufacturerON Semiconductor
CAT5112VI-10-T3 datasheets

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Specifications of CAT5112VI-10-T3

Taps32Resistance (ohms)10K
Number Of Circuits1Temperature Coefficient300 ppm/°C Typical
Memory TypeNon-VolatileInterfaceUp/Down
Voltage - Supply2.5 V ~ 6 VOperating Temperature-40°C ~ 85°C
Mounting TypeSurface MountPackage / Case8-SOIC (3.9mm Width)
Resistance In Ohms10KLead Free Status / RoHS StatusLead free / RoHS Compliant
Other namesCAT5112VI-10-T3CT
CAT5112VI-10-TE13CT
CAT5112VI-10-TE13CT		  
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Pin Description
INC: Increment Control Input
The INC input (on the falling edge) moves the wiper in the
up or down direction determined by the condition of the U/D
input.
U/D: Up/Down Control Input
The U/D input controls the direction of the wiper movement.
When in a high state and CS is low, any high−to−low
transition on INC will cause the wiper to move one
increment toward the R
terminal. When in a low state and
H
CS is low, any high−to−low transition on INC will cause the
wiper to move one increment towards the R
R
: High End Potentiometer Terminal
H
R
is the high end terminal of the potentiometer. It is not
H
required that this terminal be connected to a potential greater
than the R
terminal. Voltage applied to the R
L
cannot exceed the supply voltage, V
CC
GND.
R
: Wiper Potentiometer Terminal (Buffered)
WB
R
is the buffered wiper terminal of the potentiometer. Its
WB
position on the resistor array is controlled by the control
inputs, INC, U/D and CS.
R
: Low End Potentiometer Terminal
L
R
is the low end terminal of the potentiometer. It is not
L
required that this terminal be connected to a potential less
than the R
terminal. Voltage applied to the R
H
cannot exceed the supply voltage, V
CC
GND. R
and R
are electrically interchangeable.
L
H
CS: Chip Select
The chip select input is used to activate the control input of
the CAT5112 and is active low. When in a high state, activity
on the INC and U/D inputs will not affect or change the
position of the wiper.
Device Operation
The CAT5112 operates like a digitally controlled
potentiometer with R
terminals and R
potentiometer’s wiper. There are 32 available tap positions
including the resistor end points, R
resistor elements connected in series between the R
terminals. The wiper terminal is connected to one of the 32
taps and controlled by three inputs, INC, U/D and CS. These
inputs control a five−bit up/down counter whose output is
decoded to select the wiper position. The selected wiper
position can be stored in nonvolatile memory using the INC
terminal.
and CS inputs.
L
With CS set LOW the CAT5112 is selected and will
respond to the U/D and INC inputs. HIGH to LOW
transitions on INC will increment or decrement the wiper
(depending on the state of the U/D input and five−bit
terminal
H
counter). The wiper, when at either fixed terminal, acts like
or go below ground,
its mechanical equivalent and does not move beyond the last
position. The value of the counter is stored in nonvolatile
memory whenever CS transitions HIGH while the INC input
is also HIGH. When the CAT5112 is powered−down, the last
stored wiper counter position is maintained in the
nonvolatile memory. When power is restored, the contents
of the memory are recalled and the counter is set to the value
stored.
With INC set low, the CAT5112 may be deselected and
powered down without storing the current wiper position in
terminal
L
nonvolatile memory. This allows the system to always
or go below ground,
power up to a preset value stored in nonvolatile memory.
http://onsemi.com
3
and R
equivalent to the high and low
H
L
equivalent to the mechanical
WB
and R
. There are 31
H
L
and R
H
L

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