CAT5121_13 Datasheet, PDF (1/11 Pages) ON Semiconductor – 16‐tap Digital Potentiometers (POTs)

CAT5120, CAT5121,
CAT5122
16‐tap Digital
Potentiometers (POTs)
with 2‐wire Interface
Description
CAT5120/5121/5122 linear-taper digital POTs perform the same
function as a mechanical potentiometer or a variable resistor. These
devices consist of a fixed resistor and a wiper contact with 16-tap
points that are digitally controlled through a 2-wire up/down serial
interface.
The CAT5120 is configured as a potentiometer. The CAT5121 and
CAT5122 are configured as variable resistors. See Pin Configurations
for part functionality.
Two resistance values are available: 10 kW and 50 kW. These are
available in space-saving 5-pin and 6-pin SC−70 and SOT−23
packages.
Features
 0.3 mA Ultra-low Standby Current
 Single-supply Operation: 2.7 V to 5.5 V
 Glitchless Switching between Resistor Taps
 Power-on Reset to Midscale
 2-wire Up/Down Serial Interface
 Resistance Values: 10 kW, 50 kW
 Available in SC−70 and SOT−23 Packages
 These Devices are Pb-Free, Halogen Free/BFR Free and are RoHS
Compliant
Applications
 LCD Screen Adjustment
 Volume Control
 Mechanical Potentiometer Replacement
 Gain Adjustment
 Line Impedance Matching
http://onsemi.com
SC−70
SD SUFFIX
CASE 419AD
SOT−23
TB SUFFIX
CASE 527AJ
SC−70
SD SUFFIX
CASE 419AC
SOT−23
TB SUFFIX
CASE 527AH
PIN CONFIGURATIONS
SC−70
SOT−23
V_DD 1
6H
GND 2
5W
CAT5120
U/D 3
4 CS
SC−70
SOT−23
V_DD ¹
6H
GND ²
5L
CAT5121
U/D 3
4 CS
SC−70
SOT−23
V_DD 1
5H
GND 2
CAT5122
U/D 3
4 CS
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
July, 2013 − Rev. 8
Publication Order Number:
CAT5120/D