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CAT5171 Datasheet PDF : 12 Pages
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CAT5171
256‐position I2C Compatible
Digital Potentiometer (POT)
The CA5171 is a 256-position digital linear taper potentiometer
ideally suited for replacing mechanical potentiometers and variable
resistors.
The wiper settings are controlled through an I2C-compatible digital
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 midscale or to go to a
shutdown state during operation. An address input pin, AD0, allows
the connection of two devices onto the same I2C bus.
The CAT5171 operates from 2.7 V to 5.5 V, while consuming less
than 2 mA. This low operating current, combined with a small package
footprint, makes the CAT5171 ideal for battery-powered portable
applications.
The CAT5171, designed as a pin for pin replacement for the
AD5245, is offered in the 8-lead SOT23 package and operates over the
−40°C to +85°C industrial temperature range.
Features
• 256-position
• End-to-End Resistance: 50 kW, 100 kW
• I2C Compatible Interface
• Power-on Preset to Midscale
• Single Supply 2.7 V to 5.5 V
• Low Temperature Coefficient 100 ppm/°C
• Low Power, IDD 2 mA max
• Wide Operating Temperature −40°C to +85°C
• SOT−23 8-lead (2.9 mm × 3 mm) Package
• These Devices are Pb-Free, Halogen Free/BFR Free and are RoHS
Compliant
Typical Applications
• Potentiometer Replacement
• Transducer Adjustment of Pressure, Temperature, Position,
Chemical, and Optical Sensors
• RF Amplifier Biasing
• Gain Control and Offset Adjustment
www.onsemi.com
SOT23−8
TP, TB SUFFIX
CASE 527AK
MARKING DIAGRAM
AF\A/YW
AGYM
1
1
AF
= 50 kW
AG = 100 kW
\A/
= Assembly Location
YW = Production Year and Week
YM = Production Year (last digit) and Month
M(1 − 9, A, B, C)
PIN CONNECTIONS
W
VDD
GND
SCL
1
(Top View)
A
B
AD0
SDA
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.
© Semiconductor Components Industries, LLC, 2013
1
August, 2017 − Rev. 3
Publication Order Number:
CAT5171/D
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