Digital Potentiometers (POTs) | CAT5269

Digital Potentiometer (POT), Dual 256-Tap, with 2-wire Interface

Obsolete

Datasheet

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Overview

The CAT5269 is two digital POTs integrated with control logic and 18 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 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 CAT5269 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 -40°C to 85°C industrial operating temperature range.

  • Audio Equipment
  • Industrial Controls

  • Automobiles
  • Industrial Equipment

  • Two linear taper digital potentiometers
  • 256 resistor taps per potentiometer
  • End to end resistance 50 kΩ or 100 kΩ
  • Potentiometer control and memory access via 2-wire interface (I²C like)
  • Low wiper resistance, typically 100 Ω
  • 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 1 μA
  • 1,000,000 nonvolatile WRITE cycles
  • 100 year nonvolatile memory data retention
  • Industrial temperature range

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# of Pots

# of Taps

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VH Max (V)

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VDD Max (V)

Reference Price

CAT5269YI-00-T2

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Obsolete

CAD Model

Pb

A

H

P

TSSOP-24

948AR

1

260

REEL

2000

N

2

256

Potentiometer

I2C

100

VCC

Yes

6

Price N/A

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Reliability Data

Die Related Summary Data

Device: CAT5269YI-00-T2

Equivalent to wafer fab process: CMOS SUB

Product Technology

Product Technology

Equivalent Device-Hours

MTBF/MTTF in Hours

FITS

CMOS SUB

2

920154574

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Re-calculate Data

Data is based on the following assumptions.

Note: The temperature and confidence level may be adjusted to your requirements.

Disclaimer: A reliability FIT rate calculated using this tool shall not be used for any functional safety purpose. In case a raw FIT rate needs to be estimated for a component which is targeted to be used in a safety critical application (i.e. compliant to ISO 26262 standard) it should be calculated according to generic safety standards (IEC62380, IEC61709, SN29500, FIDES, etc.)

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