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

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Overview

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.

  • Audio Equipment
  • Industrial Controls
  • Automobiles
  • Industrial Equipment
  • 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

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4

Product

Status

CAD Models

Compliance

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

CAT5409YI-00-T2

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Last Shipments

CAD Model

Pb

A

H

P

TSSOP-24

1

260

REEL

2000

N

4

64

Potentiometer

I2C

100

VCC

Yes

6

Price N/A

More Details

CAT5409YI-10-T2

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Last Shipments

CAD Model

Pb

A

H

P

TSSOP-24

1

260

REEL

2000

N

4

64

Potentiometer

I2C

10

VCC

Yes

6

Price N/A

More Details

CAT5409YI-25-T2

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Obsolete

CAD Model

Pb

A

H

P

TSSOP-24

1

260

REEL

2000

N

4

64

Potentiometer

I2C

2.5

VCC

Yes

6

Price N/A

More Details

CAT5409YI-50-T2

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Last Shipments

CAD Model

Pb

A

H

P

TSSOP-24

1

260

REEL

2000

N

4

64

Potentiometer

I2C

50

VCC

Yes

6

Price N/A

More Details

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