MAX5160NEUA

Overview

The MAX5160NEUA is a low-power digital potentiometer manufactured by Analog Devices Inc./Maxim Integrated. It provides 32 tap positions with a nominal end-to-end resistance of 200kΩ, housed in an 8-pin µMAX package. The device operates on a single supply voltage ranging from +2.7V to +5.5V and draws only 100nA of supply current. Key electrical specifications include ±25% resistance tolerance, 400Ω wiper resistance, and a nominal temperature coefficient of 50ppm/°C end-to-end. It features glitchless switching between resistor taps and includes power-on reset functionality that sets the wiper to midscale upon initialization.

Feature Summary

• 32 Tap Positions: Provides precise digital control over resistance levels via serial interface.
• Low Power Consumption: Operates with a supply current of 100nA at +2.7V to +5.5V.
• Glitchless Switching: Ensures stable operation during transitions between resistor taps.
• Power-On Reset: Automatically initializes the wiper position to midscale (position 16) at startup.

Applications

• LCD Screen Adjustment
• Volume Control
• Mechanical Potentiometer Replacement

Procurement Notes

Verify the component marking code matches '—' for the 200kΩ variant. Confirm the package type is 8-pin µMAX and the temperature range is -40°C to +85°C. Ensure the ordering suffix NEUA corresponds to the specified industrial grade and packaging configuration.

Selection Notes

Select the MAX5160NEUA when a 200kΩ digital potentiometer is required in an 8-pin µMAX package. Choose this part over the MAX5161 if independent H and L terminals are needed rather than a variable resistor configuration. Consider the ±25% tolerance and 50ppm/°C tempco for gain-setting or biasing applications requiring moderate precision.

Part Context

The MAX5160NEUA belongs to the MAX5160/MAX5161 family of low-power digital potentiometers. The NEUA suffix indicates the 200kΩ resistance value, while other suffixes like MEUA and LEUA denote 100kΩ and 50kΩ variants respectively. This specific part is designed to replace mechanical potentiometers in space-constrained designs requiring digital adjustment capabilities.

Replacement Considerations

Direct replacements within the same family include MAX5160MEUA (100kΩ) and MAX5160LEUA (50kΩ). For variable resistor applications, the MAX5161 series offers a 6-pin SOT23 alternative with internal shorting of the wiper to the high terminal.

FAQ

What is the function of the power-on reset feature?

The power-on reset circuitry ensures that the wiper position defaults to midscale (position 16) immediately after power is applied, providing a known initial state.

How does the MAX5160NEUA differ from the MAX5161?

The MAX5160NEUA uses an 8-pin µMAX package with separate H and L terminals, functioning as a potentiometer. The MAX5161 uses a 6-pin SOT23 package with the wiper internally shorted to the high terminal, functioning as a variable resistor.

What is the maximum operating supply voltage?

The device supports a single supply voltage range from +2.7V to +5.5V.