Digital Potentiometer (POT), 256-Tap, with I2C Interface and Integrated EEPROM

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Overview

The CAT5140 is a single channel non-volatile 256-tap digital POT. This digital POT is comprised of a series of equal value resistor elements connected between two externally accessible end points. The tap points between each resistive element can be selectively connected to the wiper output via internal CMOS switches forming a linear taper electronic potentiometer.

The CAT5140 contains a volatile wiper register (WR) and an 8-bit non-volatile EEPROM for wiper position and 5 additional non-volatile registers for general purpose data storage. Programming of the registers is controlled via I2C interface. On power up, the wiper position is reset to the most recent value stored in the non-volatile memory register (IVR).

The CAT5140 operates over the industrial temperature range of -40°C to +85°C.

  • Gain Adjustment and Line Impedance Matching
  • Automated Calibration
  • Contrast, Brightness and Volume Control
  • LCD Screen Adjustment
  • Instrumentation for Handheld, Portable Devices
  • Industrial Automation for Handheld, Portable Devices
  • Portable Games
  • 400 kHz I2C Compatible Interface
  • 256 Position Linear Taper Potentiometer
  • End-to-End Resistance = 50 kΩ / 100 kΩ
  • TCR = 100 ppm/°C (typical)
  • Standby Current = 2 µA (max)
  • Typical Wiper Resistance = 70 Ω @ 3.3 V
  • Operating Voltage = 2.5 V to 5.5 V
  • 6 Registers 8-bit Non-volatile EEPROM
  • 2,000,000 Data Write Stores
  • 100 Year Data Retention
  • 8-Lead MSOP Package
  • Pb-free RoHS Compliant: NiPdAu Plating

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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

CAT5140ZI-00-GT3

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Obsolete

CAD Model

Pb

A

H

P

MSOP8 3.0x3.0

1

260

REEL

3000

N

1

256

Potentiometer

I2C

100

VCC

Yes

5.5

Price N/A

More Details

CAT5140ZI-50-GT3

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Lifetime

CAD Model

Pb

A

H

P

MSOP8 3.0x3.0

1

260

REEL

3000

N

1

256

Potentiometer

I2C

50

VCC

Yes

5.5

$0.5809

More Details

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