MAX5160LEUA+

Overview

The MAX5160LEUA+ is a low-power, linear-taper digital potentiometer manufactured by Analog Devices (Maxim Integrated). It provides digitally controlled resistance with 32 tap positions and a nominal end-to-end resistance of 50kΩ. The device operates on a single supply voltage ranging from +2.7V to +5.5V and draws a typical supply current of 10µA. Key electrical specifications include a wiper resistance of 400Ω, ±25% resistance tolerance, and an end-to-end temperature coefficient of 50ppm/°C. It features a 3-wire serial interface for control and includes power-on reset functionality that sets the wiper to midscale upon initialization.

Feature Summary

• 32 Tap Positions: Offers 32 discrete resistance steps between the high (H) and low (L) terminals.
• Low Power Consumption: Typical supply current is 10µA, supporting battery-operated applications.
• Linear Taper: Provides a linear resistance profile suitable for precise gain and bias adjustments.
• Glitchless Switching: Ensures stable operation during transitions between resistor taps.

Applications

• LCD Screen Adjustment
• Volume Control
• Mechanical Potentiometer Replacement

Procurement Notes

Verify the component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific resistance value associated with the 'LE' suffix (50kΩ) matches the design requirements. Ensure the 8-pin µMAX package dimensions are compatible with the PCB footprint. Check for RoHS compliance status if required by local regulations.

Selection Notes

Select the MAX5160LEUA+ when a 50kΩ digital potentiometer is required in an 8-pin surface-mount package. Compare against the MAX5160MEUA+ (100kΩ) and MAX5160NEUA+ (200kΩ) if different resistance values are needed. Consider the MAX5161 series if a 6-pin SOT23 package or variable resistor configuration (wiper shorted to H) is preferred. Verify that the 3-wire serial interface timing meets the system clock constraints.

Part Context

The MAX5160LEUA+ belongs to the MAX5160/MAX5161 family of low-power digital potentiometers. This family is designed to replace mechanical potentiometers in circuits requiring digital adjustment of resistance, such as gain control or voltage biasing. The LE suffix specifically denotes the 50kΩ resistance variant within the 8-pin µMAX package lineup.

Replacement Considerations

Direct substitutes within the same family include MAX5160MEUA+ (100kΩ) and MAX5160NEUA+ (200kΩ), provided the resistance value difference is acceptable for the application. For pin-compatible alternatives with different resistance values, consider the MAX5161 series in a 6-pin SOT23 package, noting the functional differences in pinout and wiper configuration.