CAT5112VI10 Datasheet, PDF (1/10 Pages) ON Semiconductor – 32‐tap Digital Potentiometer (POT) with Buffered Wiper

CAT5112
32‐tap Digital
Potentiometer (POT)
with Buffered Wiper
Description
The CAT5112 is a single digital POT designed as an electronic
replacement for mechanical potentiometers. Ideal for automated
adjustments on high volume production lines, they are also well suited
for applications where equipment requiring periodic adjustment is
either difficult to access or located in a hazardous or remote
environment.
The CAT5112 contains a 32-tap series resistor array connected
between two terminals R_H and R_L. An up/down counter and decoder
that are controlled by three input pins, determines which tap is
connected to the wiper, R_WB. The CAT5112 wiper is buffered by an op
amp that operates rail to rail. The wiper setting, stored in non-volatile
memory, is not lost when the device is powered down and is
automatically recalled when power is returned. The wiper can be
adjusted to test new system values without effecting the stored setting.
Wiper-control of the CAT5112 is accomplished with three input
control pins, CS, U/D, and INC. The INC input increments the wiper
in the direction which is determined by the logic state of the U/D input.
The CS input is used to select the device and also store the wiper
position prior to power down.
The digital POT can be used as a buffered voltage divider. For
applications where the potentiometer is used as a 2-terminal variable
resistor, please refer to the CAT5114. The buffered wiper of the
CAT5112 is not compatible with that application.
Features
 32-position Linear Taper Potentiometer
 Non-volatile EEPROM Wiper Storage; Buffered Wiper
 Low Power CMOS Technology
 Single Supply Operation: 2.5 V − 6.0 V
 Increment Up/Down Serial Interface
 Resistance Values: 10 kW, 50 kW and 100 kW
 Available in PDIP, SOIC, TSSOP and MSOP Packages
 These Devices are Pb-Free, Halogen Free/BFR Free and are RoHS
Compliant
Applications
 Automated Product Calibration
 Remote Control Adjustments
 Offset, Gain and Zero Control
 Tamper-proof Calibrations
 Contrast, Brightness and Volume Controls
 Motor Controls and Feedback Systems
 Programmable Analog Functions
 Semiconductor Components Industries, LLC, 2013
1
June, 2013 − Rev. 16
http://onsemi.com
SOIC−8
V SUFFIX
CASE 751BD
MSOP−8
Z SUFFIX
CASE 846AD
PDIP−8
L SUFFIX
CASE 646AA
TSSOP−8
Y SUFFIX
CASE 948AL
PIN CONFIGURATIONS
1
INC
U/D
R_H
GND
V_CC
CS
R_L
R_WB
PDIP (L), SOIC (V), MSOP (Z)
1
CS
V_CC
INC
U/D
TSSOP (Y)
(Top Views)
R_L
R_WB
GND
R_H
Pin Name
INC
U/D
R_H
GND
R_WB
R_L
CS
V_CC
PIN FUNCTION
Function
Increment Control
Up/Down Control
Potentiometer High Terminal
Ground
Buffered Wiper Terminal
Potentiometer Low Terminal
Chip Select
Supply Voltage
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 10 of this data sheet.
Publication Order Number:
CAT5112/D