CAT5270YI-00-GT2(2009) 查看數據表（PDF） - ON Semiconductor

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CAT5270YI-00-GT2
(Rev.:2009)

Dual Digitally Programmable Potentiometers (DPP) with 256 Taps & I2C Compatible Interface

ON Semiconductor 

CAT5270

Dual Digitally Programmable

Potentiometers (DPPt) with

256 Taps & I2C Compatible

Interface

Description

The CAT5270 is a volatile 256−tap by two channels, digitally

programmable potentiometer (DPPt) with an I2C compatible

interface. Each DPP consists of a linear taper series of resistive

elements connected between two externally accessible end points. The

tap points between each resistive element are connected to the wiper

outputs with CMOS switches. On power up the wiper position goes to

mid scale.

The CAT5270 can be used as a potentiometer or as a two terminal,

variable resistor. It is available in a 14−lead TSSOP package operating

over the industrial temperature range (−40°C to 85°C).

Features

• Two Linear Taper Digitally Programmable Potentiometers

• 256 Resistor Taps per Potentiometer

• End to End Resistance 50 kW, 100 kW

• I2C Compatible Interface

• Low Wiper Resistance 75 W (typ.)

• 2.5 V to 5.5 V Operation

• Standby Current Less than 1 mA

• Power On to Mid Scale

• 14−lead TSSOP Package

• Industrial Temperature Range

RH0 RH1

SDA

SCL

I2C

256−POSITION

COMPATIBLE

DECODE

INTERFACE CONTROL

RW0

RW1

A0

A1

CONTROL

A2

LOGIC

A3

RL0 RL1

Figure 1. Functional Diagram

http://onsemi.com

1

TSSOP−14

Y SUFFIX

CASE 948AM

PIN CONNECTION

1

A0

VCC

RLO

RHO

RWO

A2

SDA

TSSOP−14 (Y)

(Top View)

A3

SCL

GND

RW1

RH1

RL1

A1

ORDERING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on page 10 of this data sheet.

© Semiconductor Components Industries, LLC, 2009

1

October, 2009 − Rev. 3

Publication Order Number:

CAT5270/D

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