cat5171 ON Semiconductor, cat5171 Datasheet

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cat5171

Manufacturer Part Number
cat5171
Description
256-position I C Compatible Digital Potentiometer
Manufacturer
ON Semiconductor
Datasheet

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CAT5171
256-Position I
Digital Potentiometer
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 reset the wiper position to mid−scale or to go to a
shutdown state during operation. An address input pin, AD0, allows
the connection of two devices onto the same I
than 2 mA. This low operating current, combined with a small package
footprint, make the CAT5171 ideal for battery−powered portable
applications.
AD5243, is offered in the 8−lead SOT23 package and operates over
the −40°C to +85°C industrial temperature range.
Features
Typical Applications
© Semiconductor Components Industries, LLC, 2009
June, 2009 − Rev. 0
The CAT5171 is a 256−position digitally programmable linear taper
The wiper settings are controlled through an I
The CAT5171 operates from 2.7 V to 5.5 V, while consuming less
The CAT5171, designed as a pin for pin replacement for the
Chemical, and Optical Sensors
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 SOT−23 8−Lead (2.9 mm x 3 mm) Package
This is a Pb−Free Device
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
C Compatible
2
C bus.
2
C−compatible digital
1
See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.
1
GND
SCL
V
ORDERING INFORMATION
AFYM
DD
W
MARKING DIAGRAM
PIN CONNECTIONS
http://onsemi.com
AF = 50 kW
AG = 100 kW
Y = Production Year
Y =
M = Production Month
M =
TP, TB SUFFIX
CASE 527AK
(Last Digit)
(1 − 9, A, B, C)
SOT23−8
(Top View)
1
Publication Order Number:
1
AGYM
A
B
AD0
SDA
CAT5171/D

Related parts for cat5171

cat5171 Summary of contents

Page 1

... An address input pin, AD0, allows the connection of two devices onto the same I The CAT5171 operates from 2 5.5 V, while consuming less than 2 mA. This low operating current, combined with a small package footprint, make the CAT5171 ideal for battery−powered portable applications ...

Page 2

... Table 1. ORDERING INFORMATION Part Number Resistance CAT5171TBI−50GT3 50 kW CAT5171TBI−00GT3 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. Pin Name ...

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 (1) C Input/Output Capacitance (SDA, SCL) I/O Table 6. POWER UP TIMING (Notes 10 and 11) Symbol t Power−up to Read Operation PUR ...

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 CAT5171 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 CAT5171 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 CAT5171 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 CAT5171 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

... The next bit, AD0, is the first bit of the internal slave address and must match the physical device address which is defined by the state of the AD0 input pin for the CAT5171 to successfully continue the command sequence. Only the device which slave address matches the incoming device address sent by the master executes the instruction ...

Page 12

... Japan Customer Focus Center Phone: 81−3−5773−3850 http://onsemi.com 12 MIN NOM MAX 0.90 1.45 0.00 0.15 0.90 1.10 1.30 0.60 0.80 0.28 0.38 0.08 0.22 2.90 BSC 2.80 BSC 1.60 BSC 0.65 BSC 0.30 0.45 0.60 0.60 REF 0.25 REF 0° 8° END VIEW ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative CAT5171/D ...

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