CAT5409: Digital Potentiometer (POT), Quad 64-Tap, with I2C Interface

The CAT5409 is four digital POTs integrated with control logic and 16 bytes of NVRAM memory. A separate 6-bit control register (WCR) independently controls the wiper tap position 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 2-wire serial bus (I²C-like). 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 Write Protection (WP) pin protects against inadvertent programming of the data register.The CAT5409 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
  • Four linear-taper digital potentiometers
  • 64 resistor taps per potentiometer
  • End-to-end resistance 2.5 kΩ, 10 kΩ, 50 kΩ or 100 kΩ
  • I2C Interface
  • Low wiper resistance, typically 80 Ω
  • Four non-volatile wiper settings for each potentiometer
  • 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
  • Write protection for data register
Applications
  • Audio Equipment
  • Industrial Controls
End Products
  • Automobiles
  • Industrial Equipment
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
Digital Potentiometer (POT), Quad 64-Tap, with I2C InterfaceCAT5409/D (209.0kB)15
Package Drawings (2)
Document TitleDocument ID/SizeRevision
SOIC-24, 300 mils751BK (57.1kB)revo
TSSOP24, 4.4x7.8948AR (56.4kB)A
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
CAT5409WI-00-T1Last ShipmentsPb-free Halide freeSOIC-24W751BK3Tape and Reel1000
CAT5409WI-10-T1Last ShipmentsPb-free Halide freeSOIC-24W751BK3Tape and Reel1000
CAT5409WI-25-T1Last ShipmentsPb-free Halide freeSOIC-24W751BK3Tape and Reel1000
CAT5409WI-50-T1Last ShipmentsPb-free Halide freeSOIC-24W751BK3Tape and Reel1000
CAT5409WI00Last ShipmentsPb-free Halide freeSOIC-24W751BK3Tube31
CAT5409WI10Last ShipmentsPb-free Halide freeSOIC-24W751BK3Tube31
CAT5409WI50Last ShipmentsPb-free Halide freeSOIC-24W751BK3Tube31
CAT5409YI-00-T2ActivePb-free Halide freeTSSOP-24948AR1Tape and Reel2000$4.4666
CAT5409YI-10-T2ActivePb-free Halide freeTSSOP-24948AR1Tape and Reel2000$4.4666
CAT5409YI-25-T2ActivePb-free Halide freeTSSOP-24948AR1Tape and Reel2000$4.4666
CAT5409YI-50-T2ActivePb-free Halide freeTSSOP-24948AR1Tape and Reel2000$4.4666
CAT5409YI00ActivePb-free Halide freeTSSOP-24948AR1Tube62$33.3325
CAT5409YI10ActivePb-free Halide freeTSSOP-24948AR1Tube62$33.3325
CAT5409YI25ActivePb-free Halide freeTSSOP-24948AR1Tube62$33.3325
CAT5409YI50ActivePb-free Halide freeTSSOP-24948AR1Tube62$33.3325
Specifications
Product# of Pots# of TapsTypeControl InterfaceResistance Typ (kΩ)VH Max (V)Wiper Position MemoryVDD Max (V)
CAT5409YI-00-T2464PotentiometerI2C100VCCYes6
CAT5409YI-10-T2464PotentiometerI2C10VCCYes6
CAT5409YI-25-T2464PotentiometerI2C2.5VCCYes6
CAT5409YI-50-T2464PotentiometerI2C50VCCYes6
CAT5409YI00464PotentiometerI2C100VCCYes6
CAT5409YI10464PotentiometerI2C10VCCYes6
CAT5409YI25464PotentiometerI2C2.5VCCYes6
CAT5409YI50464PotentiometerI2C50VCCYes6
Digital Potentiometer (POT), Quad 64-Tap, with I2C Interface (209.0kB) CAT5409
SOIC-24, 300 mils CAT9555
TSSOP24, 4.4x7.8 CAT9555
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