cat5271 ON Semiconductor, cat5271 Datasheet

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cat5271

Manufacturer Part Number
cat5271
Description
Dual 256-position I C Compatible Digital Potentiometer
Manufacturer
ON Semiconductor
Datasheet
CAT5271
Dual 256-Position I
Compatible Digital
Potentiometer
taper potentiometer ideally suited for replacing mechanical
potentiometers and variable resistors.
interface. Upon power−up, the wiper assumes a midscale position and
may be repositioned anytime after the power is stable. The device can
be programmed to go to a shutdown state during operation.
than 2 mA. This low operating current, combined with a small package
footprint, makes the CAT5271 ideal for battery−powered portable
applications.
AD5243, is offered in the 10−lead MSOP package and operates over
the −40°C to +85°C industrial temperature range.
Features
Typical Applications
© Semiconductor Components Industries, LLC, 2009
September, 2009 − Rev. 1
The CAT5271 is a dual 256−position digitally programmable linear
The wiper settings are controlled through an I
The CAT5271 operates from 2.7 V to 5.5 V, while consuming less
The CAT5271, designed as a pin for pin replacement for the
Chemical, and Optical Sensors
Dual 256−position
End−to−End Resistance: 50 kW, 100 kW
I
Power−on Preset to Midscale
Single Supply 2.7 V to 5.5 V
Low Temperature Coefficient 100 ppm/°C
Low Power, I
Wide Operating Temperature −40°C to +85°C
RoHS−compliant MSOP−10 Package (3 mm x 4.9 mm)
Potentiometer Replacement
Transducer Adjustment of Pressure, Temperature, Position,
RF Amplifier Biasing
Gain Control and Offset Adjustment
2
C Compatible Interface
DD
2 mA max
2
2
C
C−compatible digital
1
See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.
GND
V
1
W2
B1
A1
DD
ORDERING INFORMATION
ANCC
YMR
MARKING DIAGRAM
PIN CONNECTIONS
http://onsemi.com
ANCC = 50 kW
ANCE = 100 kW
Y = Production Year
Y =
M = Production Month
M =
R = Revision
1
CASE 846AE
R, Z SUFFIX
(Last Digit)
(1 − 9, A, B, C)
MSOP−10
(Top View)
Publication Order Number:
1
ANCE
YMR
CAT5271/D
W1
B2
A2
SDA
SCL

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cat5271 Summary of contents

Page 1

... The device can be programmed shutdown state during operation. The CAT5271 operates from 2 5.5 V, while consuming less than 2 mA. This low operating current, combined with a small package footprint, makes the CAT5271 ideal for battery−powered portable applications ...

Page 2

... Table 1. ORDERING INFORMATION Part Number Resistance CAT5271ZI−50−GT3 50 kW CAT5271ZI−00−GT3 100 kW †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. Table 2. PIN FUNCTION DESCRIPTION Pin No. ...

Page 3

Table 4. ELECTRICAL CHARACTERISTICS and 100 kW Versions –40°C < Parameter DC CHARACTERISTICS — RHEOSTAT MODE Resistor Differential ...

Page 4

Table 5. CAPACITANCE T = 25° 1.0 MHz Symbol C Input/Output Capacitance (SDA, SCL) I/O (Note 11) Table 6. POWER UP TIMING (Notes 11 and 12) Symbol t Power−up to Read Operation ...

Page 5

DNL 0.01 0 −0.01 −0.02 −0.03 −0.04 −0. 128 160 TAP Figure 2. Differential Non−Linearity 5 120 100 5.6 V ...

Page 6

TEMPERATURE (°C) Figure 7. Change in End−to−End Resistance 0 −6 V − −18 −24 −30 − (KHz) Figure 9. Gain vs. Bandwidth (Tap 0x80) ...

Page 7

... R of the FET switch connecting the ON wiper output with its respective contact point. In CAT5271 this ‘contact’ resistance is typically 50 W. Thus a connection setting of 0x00 yields a minimum resistance between terminals W and B. For a 100 kW device, the second connection, or the first tap ...

Page 8

... Input GND Potentiometer GND Figure 12. ESD Protection Networks Terminal Voltage Operating Range The CAT5271 V and GND power supply define the DD limits for proper 3−terminal digital potentiometer operation. Signals or potentials applied to terminals the wiper must remain inside the span which attempt to go outside these boundaries will be clamped by the internal forward biased diodes ...

Page 9

... When the CAT5271 READ mode it transmits 8 bits of data, releases the SDA line, and monitors the line for an acknowledge. Once it receives this acknowledge, the CAT5271 will continue to transmit data acknowledge is sent by the Master, the device terminates data transmission and waits for a STOP condition ...

Page 10

SDA SCL START CONDITION SCL FROM MASTER DATA OUTPUT FROM TRANSMITTER DATA OUTPUT FROM RECEIVER START Figure 16. Start/Stop Condition 1 Figure 17. Acknowledge Condition http://onsemi.com 10 STOP CONDITION 8 9 ACKNOWLEDGE ...

Page 11

... INSTRUCTION AND REGISTER DESCRIPTION SLAVE ADDRESS BYTE The first byte sent to the CAT5271 from the master/processor is called the Slave Address Byte. The most significant seven bits of the slave address are a device type identifier. For the CAT5271, these bits are fixed at 0101111. The following bit (R/W) selects between a Read or a Write operation ...

Page 12

E E1 TOP VIEW SIDE VIEW Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC MO-187. PACKAGE DIMENSIONS MSOP 10, 3x3 CASE 846AE−01 ISSUE O SYMBOL MIN A A1 0.00 ...

Page 13

... N. American Technical Support: 800−282−9855 Toll Free USA/Canada Europe, Middle East and Africa Technical Support: Phone: 421 33 790 2910 Japan Customer Focus Center Phone: 81−3−5773−3850 http://onsemi.com 13 ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative CAT5271/D ...

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