Digital Potentiometers (POTs) | CAT5221

Digital Potentiometer (POT), 64-Tap, with I2C Interface

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Overview

The CAT5221 is two digital POTs integrated with control logic and 16 bytes of EEPROM memory. Each digital POT consists of a series of 63 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 6-bit control register (WCR) independently controls the wiper tap switches for each digital POT. Associated with each wiper control register are four 6-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 register (WCR).

The CAT5221 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.

  • Audio Equipment
  • Industrial controls

  • Industrial Equipment
  • Automobiles

  • Two linear-taper digital potentiometers
  • 64 resistor taps per potentiometer
  • End to end resistance 2.5 kΩ, 10 kΩ, 50 kΩ or 100 kΩ
  • Potentiometer control and memory access via I²C interface
  • Low wiper resistance, typically 80 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 1.0 µA
  • 1,000,000 nonvolatile WRITE cycles
  • 100 year nonvolatile memory data retention
  • Industrial temperature ranges

Tools and Resources

Product services, tools and other useful resources related to CAT5221

CAD Model

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Product

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CAD Models

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Package Type

Case Outline

MSL Type

MSL Temp (°C)

Container Type

Container Qty.

ON Target

# of Pots

# of Taps

Type

Control Interface

Resistance Typ (kΩ)

VH Max (V)

Wiper Position Memory

VDD Max (V)

Reference Price

CAT5221WI-00-T1

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Obsolete

CAD Model

Pb

A

H

P

SOIC-20W

751BJ

3

260

REEL

1000

N

2

64

Potentiometer

I2C

100

VCC

Yes

6

Price N/A

More Details

CAT5221WI-10-T1

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Last Shipments

CAD Model

Pb

A

H

P

SOIC-20W

751BJ

3

260

REEL

1000

N

2

64

Potentiometer

I2C

10

VCC

Yes

6

Price N/A

More Details

CAT5221WI-25-T1

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Obsolete

CAD Model

Pb

A

H

P

SOIC-20W

751BJ

3

260

REEL

1000

N

2

64

Potentiometer

I2C

2.5

VCC

Yes

6

Price N/A

More Details

CAT5221WI-50-T1

Loading...

Obsolete

CAD Model

Pb

A

H

P

SOIC-20W

751BJ

3

260

REEL

1000

N

2

64

Potentiometer

I2C

50

VCC

Yes

6

Price N/A

More Details

CAT5221YI-00-T2

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Obsolete

CAD Model

Pb

A

H

P

TSSOP-20

948AQ

1

260

REEL

2000

N

2

64

Potentiometer

I2C

100

VCC

Yes

6

Price N/A

More Details

CAT5221YI-10-T2

Loading...

Obsolete

CAD Model

Pb

A

H

P

TSSOP-20

948AQ

1

260

REEL

2000

N

2

64

Potentiometer

I2C

10

VCC

Yes

6

Price N/A

More Details

CAT5221YI-25-T2

Loading...

Obsolete

CAD Model

Pb

A

H

P

TSSOP-20

948AQ

1

260

REEL

2000

N

2

64

Potentiometer

I2C

2.5

VCC

Yes

6

Price N/A

More Details

CAT5221YI-50-T2

Loading...

Obsolete

CAD Model

Pb

A

H

P

TSSOP-20

948AQ

1

260

REEL

2000

N

2

64

Potentiometer

I2C

50

VCC

Yes

6

Price N/A

More Details

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Reliability Data

Die Related Summary Data

Device: CAT5221WI-00-T1

Equivalent to wafer fab process: CMOS SUB

Product Technology

Product Technology

Equivalent Device-Hours

MTBF/MTTF in Hours

FITS

CMOS SUB

2

920154574

More Details

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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