下载
Semiconductor Components Industries, LLC, 2013
July, 2013 − Rev. 2
1 Publication Order Number:
CAT5171/D
CAT5171
256‐position I
2
C 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 I
2
C-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 I
2
C 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
−40C to +85C industrial temperature range.
Features
256-position
End-to-End Resistance: 50 kW, 100 kW
I
2
C 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 −40C to +85C
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
PIN CONNECTIONS
SDA
AD0
B
A
SCL
GND
V
DD
W
1
(Top View)
See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.
ORDERING INFORMATION
SOT23−8
TP, TB SUFFIX
CASE 527AK
AF = 50 kW
AG = 100 kW
Y = Production Year
Y = (Last Digit)
M = Production Month
M = (1 − 9, A, B, C)
AFYM
MARKING DIAGRAM
1
AGYM
1
页面指南
