CAT5171_13 Datasheet, PDF (1/12 Pages) ON Semiconductor – 256‐position I2C Compatible Digital Potentiometer (POT)

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, I_DD 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
http://onsemi.com
SOT23−8
TP, TB SUFFIX
CASE 527AK
MARKING DIAGRAM
AFYM
AGYM
1
1
AF = 50 kW
AG = 100 kW
Y = Production Year
Y = (Last Digit)
M = Production Month
M = (1 − 9, A, B, C)
PIN CONNECTIONS
W
V_DD
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
July, 2013 − Rev. 2
Publication Order Number:
CAT5171/D