CAT5172_13 Datasheet, PDF (1/10 Pages) ON Semiconductor – 256‐position SPI Compatible Digital Potentiometer (POT)

CAT5172
256‐position SPI
Compatible Digital
Potentiometer (POT)
The CAT5172 is a 256-position digital linear taper potentiometer
ideally suited for replacing mechanical potentiometers and variable
resistors. Like mechanical potentiometers, the CAT5172 has a
resistive element, which can span V_CC to Ground or float anywhere
between the power supply rails.
Wiper settings are controlled through an SPI-compatible digital
interface. Upon power-up, the wiper assumes a mid-span position and
may be repositioned anytime after the power is stable.
The CAT5172 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, make the CAT5172 ideal for battery-powered portable
appliance.
Features
 256-position
 End-to-End Resistance: 50 kW, 100 kW
 SPI 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
TB SUFFIX
CASE 527AK
MARKING DIAGRAM
ADYM
AEYM
1
1
AD = 50 kW
AE = 100 kW
Y = Production Year
Y = (Last Digit)
M = Production Month
M = (1 − 9, A, B, C)
PIN CONNECTIONS
W
1
A
V_DD
B
GND
CS
CLK
SDI
(Top View)
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. 1
Publication Order Number:
CAT5172/D