MAX5418
256-Tap, Nonvolatile, I²C-Interface, Digital Potentiometers
Industry's Smallest 256-Tap Digital Potentiometers Fit in a 3mm x 3mm TDFN
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Overview
Features and Benefits
- Power-On Recall of Wiper Position from Nonvolatile Memory
- Tiny 3mm x 3mm 8-Pin TDFN Package
- 35ppm/°C End-to-End Resistance Temperature Coefficient
- 5ppm/°C Ratiometric Temperature Coefficient
- 50kΩ/100kΩ/200kΩ Resistor Values
- Fast I²C-Compatible Serial Interface
- 500nA (typ) Static Supply Current
- Single-Supply Operation: +2.7V to +5.25V
- 256 Tap Positions
- ±0.5 LSB DNL in Voltage-Divider Mode
- ±0.5 LSB INL in Voltage-Divider Mode
- EV Kit Available
Product Details
The MAX5417/MAX5418/MAX5419 nonvolatile, linear-taper, digital potentiometers perform the function of a mechanical potentiometer by replacing the mechanics with a simple 2-wire digital interface, allowing communication with multiple devices. Each device performs the same function as a discrete potentiometer or variable resistor and has 256 tap points.
The devices feature an internal, nonvolatile EEPROM used to store the wiper position for initialization during power-up. The fast-mode I²C-compatible serial interface allows communication at data rates up to 400kbps, minimizing board space and reducing interconnection complexity in many applications. Each device is available with one of four factory-preset addresses (see the Ordering Information/Selector Guide in the full data sheet) and features an address input for a total of eight unique address combinations.
The MAX5417/MAX5418/MAX5419 provide three nominal resistance values: 50kΩ (MAX5417), 100kΩ (MAX5418), or 200kΩ (MAX5419). The nominal resistor temperature coefficient is 35ppm/°C end-to-end, and only 5ppm/°C ratiometric. This makes the devices ideal for applications requiring a low-temperature-coefficient variable resistor, such as low-drift, programmable gain-amplifier circuit configurations.
The MAX5417/MAX5418/MAX5419 are available in a 3mm x 3mm 8-pin TDFN package, and are specified over the extended -40°C to +85°C temperature range.
Applications
- Liquid-Crystal Display (LCD) Contrast Control
- Low-Drift Programmable-Gain Amplifiers
- Mechanical Potentiometer Replacements
- Volume Control
Product Categories
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Documentation & Resources
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MAX5418 Reliability Data1/12/2023PDF59K
Design Resources
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.
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