MAX6105EUR-T

Overview

The MAX6105EUR-T is a low-cost, micropower, low-dropout voltage reference from the MAX6100–MAX6107 family. It provides a fixed output voltage of 5V with an initial accuracy of ±0.4% and a maximum temperature coefficient of 75ppm/°C. The device operates over an extended temperature range of -40°C to +85°C and accepts input voltages from VOUT+200mV up to 12.6V. It draws a quiescent supply current of 90µA (max 125µA) and can source 5mA or sink 2mA of load current without requiring external compensation capacitors.

Feature Summary

• Proprietary curvature-correction circuit and laser-trimmed thin-film resistors ensure high precision and stability.
• Series-mode architecture eliminates the need for external biasing resistors and reduces supply current waste compared to shunt references.
• Internally compensated design allows stable operation with any capacitive load, saving board space by removing the need for output capacitors.
• Ultra-low dropout voltage and supply-independent quiescent current maximize efficiency in battery-operated systems.

Applications

• Portable battery-powered systems
• Notebook computers
• PDAs and GPS devices
• Digital multimeters (DMMs)
• Cellular phones

Procurement Notes

Verify the specific part number suffix against official manufacturer documentation to confirm package type and temperature rating. Ensure the input voltage source can provide sufficient current during turn-on transients if operating near minimum dropout conditions. Confirm RoHS compliance status through the latest datasheet revision before procurement.

Selection Notes

Select this component when a fixed 5V reference is required in space-constrained designs. It is suitable for applications needing moderate load currents up to 5mA sourcing. Consider the line regulation and noise specifications relative to ADC requirements. Verify that the input voltage remains within the specified range to maintain regulation.

Part Context

This device belongs to the MAX6100–MAX6107 series of micropower voltage references. The family offers various fixed output voltages including 1.25V, 1.8V, 2.048V, 2.5V, 3V, 4.096V, 4.5V, and 5V. All members share similar electrical characteristics, packaging options, and application notes, differing primarily in their nominal output voltage settings.

Replacement Considerations

Other members of the MAX6100–MAX6107 family may serve as alternatives if different output voltages are acceptable. Verify pin compatibility and thermal performance when substituting. Check for updated revisions or equivalent parts from Analog Devices/Maxim Integrated if discontinuation occurs.

FAQ

Does the MAX6105EUR-T require an external output capacitor for stability?

No, the device does not require an external output capacitor for frequency stability. It is stable with any capacitive load when sourcing less than 200µA.

What is the maximum load current the MAX6105EUR-T can handle?

The device can source up to 5mA and sink up to 2mA of load current.

How does the supply current of the MAX6105EUR-T compare to shunt references?

Unlike shunt references that waste current through a series resistor, the MAX6105EUR-T draws supply current only when required by the load, maximizing efficiency across all input voltages.