CAT5259_13 Datasheet, PDF (1/15 Pages) ON Semiconductor – Quad Digital Potentiometer (POT)

CAT5259
Quad Digital
Potentiometer (POT)
with 256 Taps
and I²C Interface
Description
The CAT5259 is four digital POTs integrated with control logic and
16 bytes of NVRAM memory. Each digital POT consists of a series of
resistive elements connected between two externally accessible end
points. The tap points between each resistive element are connected to
the wiper outputs with CMOS switches. A separate 8-bit control
register (WCR) independently controls the wiper tap switches for each
digital POT. Associated with each wiper control register are four 8-bit
non-volatile memory data registers (DR) used for storing up to four
wiper settings. Writing to the wiper control register or any of the
non-volatile data registers is via a I²C serial bus. On power-up, the
contents of the first data register (DR0) for each of the four
potentiometers is automatically loaded into its respective wiper
control registers.
The CAT5259 can be used as a potentiometer or as a two terminal,
variable resistor. It is intended for circuit level or system level
adjustments in a wide variety of applications. It is available in the 0C
to 70C commercial and −40C to 85C industrial operating
temperature ranges and offered in a 24-lead SOIC and TSSOP
package.
Features
 Four Linear Taper Digital Potentiometers
 256 Resistor Taps per Potentiometer
 End to End Resistance 50 kW or 100 kW
 Potentiometer Control and Memory Access via I²C Interface
 Low Wiper Resistance, Typically 100 W
 Nonvolatile Memory Storage for up to Four Wiper Settings for
Each Potentiometer
 Automatic Recall of Saved Wiper Settings at Power Up
 2.5 to 6.0 V Operation
 Standby Current less than 1 mA
 1,000,000 Nonvolatile WRITE Cycles
 100 Year Nonvolatile Memory Data Retention
 24-lead SOIC and 24-lead TSSOP Packages
 Industrial Temperature Range
 These Devices are Pb-Free, Halogen Free/BFR Free and are
RoHS Compliant
http://onsemi.com
TSSOP−24
Y SUFFIX
CASE 948AR
SOIC−24
W SUFFIX
CASE 751BK
PIN CONNECTIONS
NC
A0
R_W3
R_H3
R_L3
NC
V_CC
R_L0
R_H0
R_W0
A2
WP
1
CAT5259
SOIC−24 (W)
TSSOP−24 (Y)
(Top View)
A3
SCL
R_L2
R_H2
R_W2
NC
GND
R_W1
R_H1
R_L1
A1
SDA
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 13 of this data sheet.
 Semiconductor Components Industries, LLC, 2013
1
July, 2013 − Rev. 11
Publication Order Number:
CAT5259/D