CAT5115VI-10-T3 ON Semiconductor, CAT5115VI-10-T3 Datasheet - Page 2
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CAT5115VI-10-T3
Manufacturer Part Number
CAT5115VI-10-T3
Description
Digital Potentiometer ICs DPP 32 taps Up/Down
Manufacturer
ON Semiconductor
Datasheet
1.CAT5115VI-10-T3.pdf
(14 pages)
Specifications of CAT5115VI-10-T3
Number Of Pots
Single
Taps Per Pot
32
Resistance
10 KOhms
Wiper Memory
Volatile
Digital Interface
Serial (3-Wire)
Operating Supply Voltage
3.3 V, 5 V
Supply Current
100 uA
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Supply Voltage (max)
6 V
Supply Voltage (min)
2.5 V
Package / Case
SOIC-8
Number Of Elements
1
# Of Taps
32
Resistance (max)
10KOhm
Power Supply Requirement
Single
Interface Type
Serial (3-Wire)
Single Supply Voltage (typ)
3.3/5V
Dual Supply Voltage (typ)
Not RequiredV
Single Supply Voltage (min)
2.5V
Single Supply Voltage (max)
6V
Dual Supply Voltage (min)
Not RequiredV
Dual Supply Voltage (max)
Not RequiredV
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
8
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Functional Diagram
Pin Function
INC: Increment Control Input
The INC input 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
CS is low, any high−to−low transition on INC will cause the
wiper to move one increment towards the R
R
R
required that this terminal be connected to a potential greater
than the R
cannot exceed the supply voltage, V
GND.
R
R
the resistor array is controlled by the control inputs, INC,
Table 1. PIN DESCRIPTIONS
U/D
INC
W
H
H
W
CS
: High End Potentiometer Terminal
: Wiper Potentiometer Terminal
is the high end terminal of the potentiometer. It is not
is the wiper terminal of the potentiometer. Its position on
Name
GND
V
INC
U/D
R
CS
R
R
CC
W
H
L
L
Figure 1. General
terminal. Voltage applied to the R
Power−On
Control
Recall
GND
V
and
CC
Increment Control
Up/Down Control
Potentiometer High Terminal
Ground
Buffered Wiper Terminal
Potentiometer Low Terminal
Chip Select
Supply Voltage
H
terminal. When in a low state and
Function
CC
or go below ground,
R
R
R
H
W
L
L
GND
V
INC
U/D
CS
terminal.
DD
H
terminal
http://onsemi.com
2
Figure 2. Detailed
U/D and CS. Voltage applied to the R
exceed the supply voltage, V
R
R
required that this terminal be connected to a potential less
than the R
cannot exceed the supply voltage, V
GND. R
CS: Chip Select
The chip select input is used to activate the control input of
the CAT5115 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
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.
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
counter). The wiper, when at either fixed terminal, acts like
its mechanical equivalent and does not move beyond the last
position. When the CAT5115 is powered−down, the wiper
position is reset. When power is restored, the counter is set
to the mid point, tap 15.
L
L
The CAT5115 operates like a digitally controlled
With CS set LOW the CAT5115 is selected and will
: Low End Potentiometer Terminal
is the low end terminal of the potentiometer. It is not
L
and R
H
R
R
H
L
terminal. Voltage applied to the R
/V
/V
H
L
H
are electrically interchangeable.
W
H
R
and R
W
equivalent to the mechanical
/V
W
L
CC
equivalent to the high and low
or go below ground, GND.
Figure 3. Electronic
H
CC
Implementation
Potentiometer
and R
or go below ground,
W
terminal cannot
L
. There are 31
L
H
terminal
and R
R
R
R
H
W
L
L