CAT5127_13 Datasheet, PDF (1/10 Pages) ON Semiconductor – 32‐tap Digital Potentiometers (POTs)

CAT5127, CAT5129
32‐tap Digital
Potentiometers (POTs)
Description
The CAT5127/CAT5129 are single digital POTs designed as an
electronic replacement for mechanical potentiometers and trim pots.
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 CAT5127 contains a 32-tap series resistor array connected
between two terminals R_H and R_L. The CAT5129 contains a 32-tap
series resistor array connected between two terminals R_H and GND.
An up/down counter and decoder that are controlled by three input
pins, determines which tap is connected to the wiper. The wiper
setting, stored in nonvolatile memory, is not lost when the device is
powered down and is automatically reinstated when power is returned.
The wiper can be adjusted to test new system values without effecting
the stored setting. Wiper-control of the CAT5127/CAT5129 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 devices are used as two-terminal variable resistors. Digital
POTs bring variability and programmability to a wide variety of
applications including control, parameter adjustments, and signal
processing.
Features
 32-position Linear Taper Potentiometer
 Non-volatile EEPROM Wiper Storage
 Low Standby Current
 Single Supply Operation: 2.5 V – 5.5 V
 Increment Up/Down Serial Interface
 Resistance Values: 10 kW, 50 kW and 100 kW
 CAT5127 in MSOP Packages
 CAT5129 in the 6-lead TSOT23 Package
 This Device is 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
http://onsemi.com
1
MSOP−8
Z SUFFIX
CASE 846AD
1
TSOT−23
TD SUFFIX
CASE 419AF
PIN CONFIGURATIONS
CAT5127
MSOP (Z)
1
INC
V_CC
U/D
CS
R_H
R_L
GND
NC
CAT5129
TSOT−23 (TD)
1
CS
V_CC
GND
R_H
U/D
INC
(Top Views)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 8 of this data sheet.
 Semiconductor Components Industries, LLC, 2013
1
July, 2013 − Rev. 7
Publication Order Number:
CAT5127/D