CAT5116LI Datasheet, PDF (1/11 Pages) ON Semiconductor – Log‐taper, 100‐tap Digital Potentiometer (POT)

CAT5116
Log‐taper, 100‐tap
Digital Potentiometer (POT)
Description
The CAT5116 is a log-taper single digital POT designed as an
electronic replacement for mechanical potentiometers.
Ideal for automated adjustments on high volume production lines,
ICs are well suited for applications where equipment requiring
periodic adjustment is either difficult to access or located in a
hazardous or remote environment.
The CAT5116 contains a 100-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_W.
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 CAT5116 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 three-terminal resistive divider or
as a two-terminal variable resistor.
Features
 100-position, Log-taper Potentiometer
 Non-volatile EEPROM Wiper Storage
 10 nA Ultra-low Standby Current
 Single-supply Operation: 2.5 V − 5.5 V
 Increment Up/Down Serial Interface
 Resistance Value: 32 kW
 Available in 8-pin MSOP, TSSOP, SOIC and DIP 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
 Audio Volume Control
 Sensor Adjustment
 Motor Controls and Feedback Systems
 Programmable Analog Functions
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_W
GND
R_H
Pin Name
INC
U/D
R_H
GND
R_W
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 7 of this data sheet.
 Semiconductor Components Industries, LLC, 2013
1
June, 2013 − Rev. 14
Publication Order Number:
CAT5116/D