MAX5419PETA+

Overview

The MAX5419PETA+ is a nonvolatile, linear-taper digital potentiometer featuring 256 tap points and a nominal end-to-end resistance of 200 kΩ. It utilizes a fast-mode I²C-compatible serial interface for wiper control and includes internal EEPROM to store the wiper position for power-on recall. The device operates on a single supply voltage ranging from +2.7V to +5.25V with a typical standby current of 500 nA. Key electrical characteristics include ±0.5 LSB DNL and INL in voltage-divider mode, a 35 ppm/°C end-to-end temperature coefficient, and a 5 ppm/°C ratiometric temperature coefficient. It is housed in an 8-pin TDFN package.

Feature Summary

• Nonvolatile EEPROM storage retains wiper position across power cycles
• I²C-compatible serial interface supports data rates up to 400 kbps
• 256 tap positions with linear taper and 200 kΩ nominal resistance
• Low standby supply current of 500 nA (typical)

Applications

• Mechanical potentiometer replacement
• Low-drift programmable-gain amplifier circuits
• Liquid-crystal display (LCD) contrast control

Procurement Notes

Verify the specific factory-preset I²C address associated with the 'P' suffix by consulting the Ordering Information section of the datasheet. Confirm that the system design accommodates the 200 kΩ end-to-end resistance and the required pull-up resistors for the SDA and SCL lines. Ensure the exposed pad is connected to a ground plane for thermal performance as specified.

Selection Notes

Select the MAX5419PETA+ when a 200 kΩ resistance value is required for the application. Compare against MAX5417 (50 kΩ) and MAX5418 (100 kΩ) if different resistance ranges are needed. Verify that the available factory addresses allow for unique bus addressing or configure the A0 pin appropriately to avoid conflicts with other devices on the I²C bus.

Part Context

This component belongs to the MAX5417/MAX5418/MAX5419 family of 256-tap, nonvolatile, I²C-interface digital potentiometers manufactured by Analog Devices / Maxim Integrated. The family shares identical functional architectures and pinouts, differing primarily in nominal resistance values and factory-set I²C slave addresses defined by the ordering suffixes.

Replacement Considerations

Direct replacements within the same series include MAX5417LETA+, MAX5417META+, MAX5417NETA+, MAX5418LETA+, MAX5418META+, MAX5418NETA+, MAX5418PETA+, MAX5419LETA+, MAX5419META+, and MAX5419NETA+. Note that these alternatives have different nominal resistances or distinct factory preset I²C addresses.