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ON Semiconductor - DPP

Numéro de référence CAT5270
Description DPP
Fabricant ON Semiconductor 
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CAT5270 fiche technique
CAT5270
Dual Digitally Programmable
Potentiometers (DPPt) with
256 Taps & I2C Compatible
Interface
Description
The CAT5270 is a volatile 256tap 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 14lead 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
14lead TSSOP Package
Industrial Temperature Range
www.DataSheet4U.com
RH0 RH1
SDA
SCL
I2C 256POSITION
COMPATIBLE
DECODE
INTERFACE CONTROL
RW0
RW1
A0
A1 CONTROL
A2 LOGIC
A3
RL0 RL1
Figure 1. Functional Diagram
http://onsemi.com
1
TSSOP14
Y SUFFIX
CASE 948AM
PIN CONNECTION
A0
VCC
RLO
RHO
RWO
A2
SDA
1
TSSOP14 (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
October, 2009 Rev. 3
1
Publication Order Number:
CAT5270/D

PagesPages 10
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