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CAT5269

Catalyst Semiconductor
Part Number CAT5269
Manufacturer Catalyst Semiconductor
Description Dual Digitally Programmable Potentiometers
Published Mar 25, 2010
Detailed Description www.DataSheet4U.com CAT5269 Dual Digitally Programmable Potentiometers (DPP™) with 256 Taps and 2-wire Interface FEATU...
Datasheet PDF File CAT5269 PDF File

CAT5269
CAT5269


Overview
www.
DataSheet4U.
com CAT5269 Dual Digitally Programmable Potentiometers (DPP™) with 256 Taps and 2-wire Interface FEATURES „ Four linear taper digitally programmable potentiometers „ 256 resistor taps per potentiometer „ End to end resistance 50kΩ or 100kΩ „ Potentiometer control and memory access via 2-wire interface (I2C like) „ Low wiper resistance, typically 100Ω „ 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 volt operation „ Standby current less than 1µA „ 1,000,000 nonvolatile WRITE cycles „ 100 year nonvolatile memory data retention „ 24-lead SOIC and TSSOP packages „ Industrial temperature range For Ordering Information details, see page 15.
DESCRIPTION The CAT5259 is two digitally programmable poten– tiometers (DPPs™) integrated with control logic and 18 bytes of NVRAM memory.
Each DPP 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 DPP.
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 2-wire 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 -40ºC to 85ºC industrial operating temperature ranges and offered in a 24-lead SOIC and TSSOP package.
FUNCTIONAL DIAGRAM PIN CONFIGURATION SOIC (W) TSSOP (Y) NC A0 NC NC...


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