MAX6045BEUR-T

Overview

The MAX6045BEUR-T is a precision series-mode voltage reference from the MAX6012 family, manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed output voltage of 4.5V with an initial accuracy better than 0.2% and a temperature coefficient under 20ppm/°C across the -40°C to +85°C range. The device operates on a supply voltage ranging from VOUT + 0.2V to 12.6V, drawing a maximum quiescent current of 35μA. It features low dropout characteristics and can source or sink up to 500μA of load current while remaining stable with capacitive loads up to 2.2nF.

Feature Summary

• Proprietary curvature-correction circuit combined with laser-trimmed thin-film resistors for high precision
• Series-mode architecture eliminates the need for external biasing resistors found in shunt references
• Internally compensated design ensures stability without requiring external compensation capacitors
• Supply current remains virtually independent of input voltage variations

Applications

• Hand-Held Equipment
• Data Acquisition Systems
• Industrial and Process-Control Systems
• Battery-Operated Equipment
• Hard-Disk Drives

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when sourcing. Confirm the 'B' grade designation aligns with the required 0.4% maximum initial accuracy specification. Ensure the operating environment stays within the specified -40°C to +85°C temperature range. Check for RoHS compliance status if environmental regulations apply to the assembly process.

Selection Notes

Select this component when a fixed 4.5V reference is required in space-constrained designs utilizing SOT23-3 packages. It is suitable for low-voltage systems where minimizing power dissipation is critical due to its micropower consumption. Consider this part over shunt references to avoid wasting supply current through external resistors. Verify that the load current requirements do not exceed the 500μA sourcing and sinking capabilities.

Part Context

This device belongs to the MAX6012/MAX6021/MAX6025/MAX6030/MAX6041/MAX6045/MAX6050 family of precision, low-dropout, micropower voltage references. All members share identical pinouts, package styles, and core architectural features, differing primarily in their fixed output voltage levels and slight variations in line regulation specifications.

Replacement Considerations

MAX6045AEUR+T serves as a direct functional replacement within the same family, offering tighter initial accuracy specifications.