MAX5433

PRODUCTION

32-Tap, Nonvolatile, I²C, Linear, Digital Potentiometers

32-Tap, Nonvolatile, I²C, Linear-Taper, Digital Potentiometers Perform the Function of a Mechanical Potentiometer, but Replace the Mechanics with a Simple 2-Wire Serial Interface

Data Sheet (Rev. 3) Product Selection Table
Part Models
4
1ku List Price
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Part Details

  • Tiny 3mm x 3mm 8-Pin TDFN and 6-Pin Thin SOT23 Packages
  • Power-On Recall of Wiper Position from Nonvolatile Memory
  • 35ppm/°C End-to-End Resistance Temperature Coefficient
  • 5ppm/°C Ratiometric Temperature Coefficient
  • 50kΩ/100kΩ Resistor Values
  • Fast 400kbps I²C-Compatible Serial Interface
  • 500nA (typ) Static Supply Current
  • +2.7V to +5.25V Single-Supply Operation
  • 32 Tap Positions
  • ±0.15 LSB INL (typ), ±0.15 LSB DNL (typ)
MAX5433
32-Tap, Nonvolatile, I²C, Linear, Digital Potentiometers
MAX5432, MAX5433, MAX5434, MAX5435: Typical Operating Circuit
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Documentation

Data Sheet 1

Reliability Data 1

Design Note 1

Technical Articles 1

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Software Resources

Device Drivers 1

Evaluation Kits

MAX5432EVKIT

Evaluation Kit for the MAX5432 and MAX5433

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Features and Benefits

  • Power-On Recall of Wiper Position from Nonvolatile Memory
  • 2.7V to 5.25V Single-Supply Operation
  • Configurable Device Address
  • On-Board USB Interface Circuit for I²C-Compatible Signals
  • USB-PC Connection and Powered (Cable Included)
  • PCB Pads for User-Supplied I²C-Compatible Signals
  • PCB Pads for Potentiometer Signals L, W, H
  • Proven USB-Compatible PCB Layout
  • Evaluates the MAX5432LETA, MAX5432META, MAX5433LETA, and MAX5433META in a 3mm x 3mm 8-pin TDFN package
  • Windows 2000/XP/Vista (32-Bit)-Compatible Software
  • Fully Assembled and Tested

Product Details

The MAX5432 evaluation kit (EV kit) is an assembled and tested printed-circuit board (PCB) that evaluates the MAX5432 IC. The MAX5432 is a 32-tap, 50kΩ, nonvolatile, linear digital potentiometer communicating over I²C. The MAX5432 features an internal nonvolatile EEPROM used to store the potentiometer's wiper position for initialization during power-up. The EEPROM is programmed through the I²C-compatible serial interface, communicating at data rates up to 400kbps. The I²C signals can be transmitted through an on-board USB interface circuit using a computer or a user-supplied I²C bus along with the PCB interfacing pads.

The EV kit also features Windows 2000/XP/Vista®-compatible software that provides a professional user interface for exercising the MAX5432's features. The program is menu driven and offers a graphical user interface (GUI) complete with buttons, track bars, and pulldown menus.

The EV kit is powered from a 3.3V source generated from the EV kit's USB interface circuit, or an external 2.7V to 5.25V DC power supply. The MAX5432 IC is available in two versions, the MAX5432LETA and the MAX5432META; each version has two selectable I²C addresses. The MAX5432 EV kit is shipped with a MAX5432LETA IC installed.

The EV kit can also evaluate the MAX5433 (100kΩ) after IC replacement (U1). The MAX5433 is also available in two versions; each version has four unique I²C addresses.

Applications

  • Liquid-Crystal Display (LCD) Screen Adjustment
  • Low-Drift Programmable-Gain Amplifiers
  • Mechanical Potentiometer Replacements
  • Volume Control
MAX5432EVKIT
Evaluation Kit for the MAX5432 and MAX5433

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