CAT5111VI-10-G ON Semiconductor, CAT5111VI-10-G Datasheet - Page 2

• Manufacturer Part Number: CAT5111VI-10-G
• Description: Digital Potentiometer ICs DPP NV 100 taps Up/Down w/Buf
• Manufacturer: ON Semiconductor

Specifications of CAT5111VI-10-G

• Number Of Pots: Single
• Taps Per Pot: 100
• Resistance: 10 KOhms
• Wiper Memory: Non Volatile
• Digital Interface: Serial (3-Wire)
• Operating Supply Voltage: 3.3 V, 5 V
• Supply Current: 200 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
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

CAT5111
PIN CONFIGURATION
PIN DESCRIPTION
INC
The INC
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
high-to-low transition on INC
move one increment toward the R
a low state and CS
on INC
towards the R
R
R
not required that this terminal be connected to a
potential greater than the R
to the R
V
R
R
tiometer. Its position on the resistor array is controlled
by the control inputs, INC
R
R
not required that this terminal be connected to a
potential less than the R
the R
V
cally interchangeable.
CS
The chip select input is used to activate the control
input of the CAT5111 and is active low. When in a
Doc. No. MD-2008 Rev. Q
¯¯¯ : Increment Control Input
¯¯ : Chip Select
CC
CC
H
H
WB
WB
L
L
: Low End Potentiometer Terminal
: High End Potentiometer Terminal
is the low end terminal of the potentiometer. It is
¯¯¯ will cause the wiper to move one increment
is the high end terminal of the potentiometer. It is
: Wiper Potentiometer Terminal (Buffered)
or go below ground, GND.
or go below ground, GND. R
¯¯¯ input (on the falling edge) moves the wiper in
MSOP 8 Lead (Z)
is the buffered wiper terminal of the poten–
SOIC 8 Lead (V)
PDIP 8-Lead (L)
GND 4
L
¯¯¯ 1
INC
U/D ¯ 2
R
terminal cannot exceed the supply voltage,
H
H
terminal cannot exceed the supply voltage,
3
CAT
L
terminal.
¯¯ is low, any high-to-low transition
8 V
7 CS
6 R
5 R
¯¯
CC
WB
L
¯¯¯ , U/D ¯ and CS
H
¯¯¯ will cause the wiper to
terminal. Voltage applied to
L
terminal. Voltage applied
TSSOP 8 Lead (Y)
L
H
U/D ¯ 4
¯¯¯ 3
INC
V
CS
and R
¯¯ 1
CC
¯¯ .
terminal. When in
2
¯¯ is low, any
CAT
H
are electri-
8 R
7 R
6 GND
5 R
L
WB
H
2
high state, activity on the INC
affect or change the position of the wiper.
DEVICE OPERATION
The CAT5111 operates like a digitally controlled
potentiometer with R
and low terminals and R
nical potentiometer's wiper. There are 100 available
tap positions including the resistor end points, R
R
series between the R
terminal is connected to one of the 100 taps and
controlled by three inputs, INC
inputs control a seven-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 and CS
With CS
respond to the U/D ¯ and INC
transitions on INC
wiper (depending on the state of the U/D ¯ input and
seven-bit counter). The wiper, when at either fixed
terminal, acts like 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
When the CAT5111 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
and powered down without storing the current wiper
position in nonvolatile memory. This allows the system
to always power up to a preset value stored in non-
volatile memory.
PIN DESCRIPTIONS
L
Name Function
. There are 99 resistor elements connected in
GND Ground
INC
U/D ¯
R
¯¯¯
V
CS
R
R
¯¯
WB
CC
H
¯¯¯ set low, the CAT5111 may be de-selected
L
¯¯ set LOW the CAT5111 is selected and will
Increment Control
Up/Down Control
Potentiometer High Terminal
Buffered Wiper Terminal
Potentiometer Low Terminal
Chip Select
Supply Voltage
¯¯¯ wil increment or decrement the
H
H
and R
and R
WB
Characteristics subject to change without notice
¯¯¯ and U/D ¯ inputs will not
¯¯¯ inputs. HIGH to LOW
¯¯ inputs.
¯¯¯ , U/D ¯ and CS
equivalent to the mecha–
¯¯¯ input is also HIGH.
L
L
equivalent to the high
terminals. The wiper
© Catalyst Semiconductor, Inc.
¯¯ . These
H
and
¯¯