CAT5221: Digital Potentiometer (POT), 64-Tap, with I2C Interface

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.

Features
  • 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
Applications
  • Audio Equipment
  • Industrial controls
End Products
  • Industrial Equipment
  • Automobiles
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
Digital Potentiometer (POT), 64-Tap, with I2C InterfaceCAT5221/D (205.0kB)14
Package Drawings (2)
Document TitleDocument ID/SizeRevision
SOIC-20, 300 mils751BJ (57.3kB)revo
TSSOP20, 4.4x6.5948AQ (56.6kB)A
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
CAT5221WI-00-T1ActivePb-free Halide freeSOIC-20W751BJ3Tape and Reel1000$2.7333
CAT5221WI-10-T1ActivePb-free Halide freeSOIC-20W751BJ3Tape and Reel1000$2.7333
CAT5221WI-25-T1ActivePb-free Halide freeSOIC-20W751BJ3Tape and Reel1000$2.7333
CAT5221WI-50-T1ActivePb-free Halide freeSOIC-20W751BJ3Tape and Reel1000$2.7333
CAT5221WI00ActivePb-free Halide freeSOIC-20W751BJ3Tube36$33.3325
CAT5221WI10ActivePb-free Halide freeSOIC-20W751BJ3Tube36$33.3325
CAT5221WI25ActivePb-free Halide freeSOIC-20W751BJ3Tube36$33.3325
CAT5221WI50ActivePb-free Halide freeSOIC-20W751BJ3Tube36$33.3325
CAT5221YI-00-T2ActivePb-free Halide freeTSSOP-20948AQ1Tape and Reel2000$2.7333
CAT5221YI-10-T2ActivePb-free Halide freeTSSOP-20948AQ1Tape and Reel2000$2.7333
CAT5221YI-25-T2ActivePb-free Halide freeTSSOP-20948AQ1Tape and Reel2000$2.7333
CAT5221YI-50-T2ActivePb-free Halide freeTSSOP-20948AQ1Tape and Reel2000$2.7333
CAT5221YI00ActivePb-free Halide freeTSSOP-20948AQ1Tube74$33.3325
CAT5221YI10ActivePb-free Halide freeTSSOP-20948AQ1Tube74$33.3325
CAT5221YI25ActivePb-free Halide freeTSSOP-20948AQ1Tube74$33.3325
CAT5221YI50ActivePb-free Halide freeTSSOP-20948AQ1Tube74$33.3325
Specifications
Product# of Pots# of TapsTypeControl InterfaceResistance Typ (kΩ)VH Max (V)Wiper Position MemoryVDD Max (V)
CAT5221WI-00-T1264PotentiometerI2C100VCCYes6
CAT5221WI-10-T1264PotentiometerI2C10VCCYes6
CAT5221WI-25-T1264PotentiometerI2C2.5VCCYes6
CAT5221WI-50-T1264PotentiometerI2C50VCCYes6
CAT5221WI00264PotentiometerI2C100VCCYes6
CAT5221WI10264PotentiometerI2C10VCCYes6
CAT5221WI25264PotentiometerI2C2.5VCCYes6
CAT5221WI50264PotentiometerI2C50VCCYes6
CAT5221YI-00-T2264PotentiometerI2C100VCCYes6
CAT5221YI-10-T2264PotentiometerI2C10VCCYes6
CAT5221YI-25-T2264PotentiometerI2C2.5VCCYes6
CAT5221YI-50-T2264PotentiometerI2C50VCCYes6
CAT5221YI00264PotentiometerI2C100VCCYes6
CAT5221YI10264PotentiometerI2C10VCCYes6
CAT5221YI25264PotentiometerI2C2.5VCCYes6
CAT5221YI50264PotentiometerI2C50VCCYes6
Digital Potentiometer (POT), 64-Tap, with I2C Interface (205.0kB) CAT5221
SOIC-20, 300 mils CAT5241
TSSOP20, 4.4x6.5 CAT5241