MAX5432
32-Tap, Nonvolatile, I²C, Linear, Digital Potentiometers
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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
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Features
- 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)
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The MAX5432–MAX5435 nonvolatile, linear-taper, digital potentiometers perform the function of a mechanical potentiometer, but replace the mechanics with a simple 2-wire serial interface. Each device performs the same function as a discrete potentiometer or a variable resistor and has 32 tap points.
The MAX5432–MAX5435 feature an internal, nonvolatile, electrically erasable programmable read-only memory (EEPROM) that returns the wiper to its previously stored position at power-up. The fast-mode I²C-compatible serial interface allows communication at data rates up to 400kbps, minimizing board space and reducing interconnection complexity. Each device is available with multiple factory-preset I²C addresses (see the Ordering Information/Selector Guide in the full data sheet).
Use the MAX5432–MAX5435 in applications requiring digitally controlled resistors. Two resistance values are available (50kΩ and 100kΩ) in a voltage-divider or variable resistor configuration. The nominal resistor temperature coefficient is 35ppm/°C end-to-end, and only 5ppm/°C ratiometric, making the devices ideal for applications requiring a low-temperature-coefficient variable resistor such as low-drift, programmable-gain amplifier circuit configurations.
The MAX5432/MAX5433 are available in a 3mm x 3mm 8-pin TDFN package and the MAX5434/MAX5435 are available in a 6-pin thin SOT23 package. The MAX5432–MAX5435 are specified over the extended (-40°C to +85°C) temperature range.
Applications
- Liquid-Crystal Display (LCD) Screen Adjustment
- Low-Drift Programmable-Gain Amplifiers
- Mechanical Potentiometer Replacements
- Volume Control
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MAX5432
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Device Drivers 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
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| MAX5432LETA+ |
Thin Dual Flatpack No Leads, Exposed Pad
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| MAX5432LETA+T |
Thin Dual Flatpack No Leads, Exposed Pad
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| MAX5432META+ |
Thin Dual Flatpack No Leads, Exposed Pad
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| MAX5432META+T |
Thin Dual Flatpack No Leads, Exposed Pad
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Thin Dual Flatpack No Leads, Exposed Pad
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HTML
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Ultra Librarian
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SamacSys
- MAX5432META+
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Thin Dual Flatpack No Leads, Exposed Pad
- Documentation
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HTML
Material Declaration
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HTML
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- CAD Symbols, Footprints, and 3D Models
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Ultra Librarian
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SamacSys
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Thin Dual Flatpack No Leads, Exposed Pad
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HTML
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HTML
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Ultra Librarian
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SamacSys
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PCN
Jun 20, 2016
- 1612
ASSEMBLY
MAX5432LETA+T
PRODUCTION
MAX5432META+
PRODUCTION
MAX5432META+T
PRODUCTION
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Jun 20, 2016
- 1612
ASSEMBLY
Software & Part Ecosystem
Device Drivers
Looking for Evaluation Software? You can find it here
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Request a Driver/SoftwareEvaluation Kits 1
MAX5432EVKIT
Evaluation Kit for the MAX5432 and MAX5433
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 Detail
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