CAT5115VI-50MSOP datasheet, PDF

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CAT5115VI-50MSOP: Description32-Tap Digitally Programmable Potentiometer; Categoryaccessories; File Size91KB，9 Pages; ManufacturerCatalyst; Websitehttp://www.catalyst-semiconductor.com/

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CAT5115VI-50MSOP Overview

32-Tap Digitally Programmable Potentiometer

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Preliminary Information

CAT5115

32-Tap Digitally Programmable Potentiometer (DPP™)

FEATURES

32-position, linear-taper potentiometer

Low power CMOS technology

Single supply operation: 2.5V-5.5V

Increment up/down serial interface

Resistance values: 10kΩ, 50kΩ and 100kΩ

Ω

Available in PDIP, SOIC, TSSOP and MSOP packages

GEN

ALO

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

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 R

and R

. An up/

down counter and decoder that are controlled by three

input pins, determines which tap is connected to the

wiper, R

. 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

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

programmability 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

Vcc

(Supply Voltage)

U/D

INC

5-BIT

UP/DOWN

COUNTER

/ V

UP/DOWN

(U/D)

INCREMENT

(INC)

DEVICE SELECT

(CS)

POR

Control

and

Memory

/ V

ONE

THIRTY TWO

DECODER

TRANSFER

GATES

RESISTOR

ARRAY

/ R

/ V

Vcc

CONTROL

CIRCUITRY

GND

GENERAL

/ V

/ R

GENERAL

DETAILED

ELECTRONIC POTENTIOMETER

IMPLEMENTATION

Characteristics subject to change without notice

Doc. No. 2117, Rev. E

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