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CAT5115VI-10-G Datasheet(PDF) 1 Page - Catalyst Semiconductor

No. de pieza CAT5115VI-10-G
Descripción Electrónicos  32-Tap Digitally Programmable Potentiometer (DPP??
Download  14 Pages
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Fabricante Electrónico  CATALYST [Catalyst Semiconductor]
Página de inicio  http://www.catalyst-semiconductor.com
Logo CATALYST - Catalyst Semiconductor

CAT5115VI-10-G Datasheet(HTML) 1 Page - Catalyst Semiconductor

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CAT5115
© Catalyst Semiconductor, Inc.
1
Doc. No. MD-2117 Rev. G
Characteristics subject to change without notice
32-Tap Digitally Programmable Potentiometer (DPP™)
FEATURES
32-position linear taper potentiometer
Low power CMOS technology
Single supply operation: 2.5V – 6V
Increment up/down serial interface
Resistance values: 10kΩ, 50kΩ and 100kΩ
Available in PDIP, SOIC, TSSOP, MSOP and
space saving 2 x 2.5mm TDFN 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 13.
DESCRIPTION
The CAT5115 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 CAT5115 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 is always set to the mid
point, tap 15 at power up. The tap position is not
stored in memory. Wiper-control of the CAT5115 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.
The digitally programmable potentiometer can be used
as a three-terminal resistive divider or as a two-terminal
variable resistor. DPPs bring variability and program-
mability to a wide variety of applications including
control, parameter adjustments, and signal processing.
For a pin-compatible device that recalls a stored tap
position on power-up refer to the CAT5114 data sheet.
FUNCTIONAL DIAGRAM
RH/VH
RL/VL
Control
and
Memory
Power On Recall
VCC
GND
U/D
INC
CS
RH/VH
RL/VL
RW/VW
RW/VW
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/VH
RW/VW
RL/VL
U/D
INC
CS


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