MAX5453EUD+

Overview

The MAX5453EUD+ is a dual digital potentiometer IC from the MAX5450–MAX5455 family, manufactured by Analog Devices (Maxim Integrated). It features two independent 3-terminal potentiometers with 256 tap positions and a nominal resistance of 50kΩ. The device operates on a single supply voltage ranging from +2.7V to +5.5V and consumes an ultra-low supply current of 0.1µA. Control is managed via an up/down interface using Chip Select (CS), Up/Down (U/D), and Increment (INC) inputs. Key electrical characteristics include a 35ppm/°C end-to-end temperature coefficient and a ratiometric temperature coefficient of 5ppm/°C. The unit is housed in a 14-pin TSSOP package and is guaranteed to operate within the extended industrial temperature range of -40°C to +85°C.

Feature Summary

• Dual 3-terminal potentiometers with 256 digitally controlled wiper positions
• Ultra-low supply current consumption of 0.1µA at VDD = 2.7V
• Glitchless switching between resistor taps via make-before-break transition
• Power-on reset circuitry sets wipers to midscale (position 127) upon startup

Applications

• Low-drift programmable-gain amplifiers (PGA)
• Mechanical potentiometer replacement
• Adjustable linear regulators
• Volume control circuits
• Impedance matching networks

Procurement Notes

Verify the component designation against official manufacturer documentation to confirm the specific 50kΩ resistance value and 14-pin TSSOP package configuration. Ensure that the ordering suffix corresponds to the lead-free (+) variant if environmental compliance is required for the target assembly process.

Selection Notes

Select this model when a dual-channel digital potentiometer with a 50kΩ resistance value is required. The MAX5453EUD+ is distinct from the MAX5451EUD+ (10kΩ) and MAX5455EUD+ (100kΩ). It is suitable for applications requiring low-temperature drift and independent up/down control interfaces rather than serial communication protocols.

Part Context

This component belongs to the MAX5450–MAX5455 family of dual digital potentiometers. While the MAX5451 and MAX5455 variants share the same 14-pin TSSOP footprint and pinout, they differ in resistance values (10kΩ and 100kΩ respectively). The MAX5453 specifically provides the 50kΩ option within this standardized package and interface architecture.

Replacement Considerations

Direct functional substitutes within the same package and interface include the MAX5451EUD+ (10kΩ) and MAX5455EUD+ (100kΩ), provided the resistance tolerance allows for adjustment. Other Maxim digital potentiometers may require schematic modifications due to differing control interfaces or pinouts.