Digital Potentiometer (POT), Dual 64-Tap, with SPI Interface

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Overview

The CAT5411 is two digital POTs integrated with control logic and 16 bytes of NVRAM 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 SPI serial bus. On power-up, the contents of the first data register (DR0) for each of the two potentiometers is automatically loaded into its respective wiper control register.

The CAT5411 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
  • 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 SPI interface: Mode (0, 0) and (1, 1)
  • 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 µA
  • Industrial temperature ranges

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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

CAT5411YI-00-T2

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Last Shipments

CAD Model

Pb

A

H

P

TSSOP-24

1

260

REEL

2000

N

2

64

Potentiometer

SPI

100

VCC

Yes

6

Price N/A

More Details

CAT5411YI-10-T2

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Last Shipments

CAD Model

Pb

A

H

P

TSSOP-24

1

260

REEL

2000

N

2

64

Potentiometer

SPI

10

VCC

Yes

6

Price N/A

More Details

CAT5411YI-25-T2

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Last Shipments

CAD Model

Pb

A

H

P

TSSOP-24

1

260

REEL

2000

N

2

64

Potentiometer

SPI

2.5

VCC

Yes

6

Price N/A

More Details

CAT5411YI-50-T2

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Obsolete

CAD Model

Pb

A

H

P

TSSOP-24

1

260

REEL

2000

N

2

64

Potentiometer

SPI

50

VCC

Yes

6

Price N/A

More Details

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