MAX6163BESA+

Overview

The MAX6163BESA+ is a precision, low-dropout, micropower voltage reference from the MAX6161–MAX6168 series. It provides a fixed output voltage of 3.000V with an initial accuracy of ±2mV (A grade) or ±4mV (B grade). The device features a maximum temperature coefficient of 5ppm/°C (A grade) or 10ppm/°C (B grade). It operates within an input voltage range of 3.2V to 12.6V and draws a typical quiescent supply current of 100µA. The component can source up to 5mA and sink up to 2mA of load current. It is housed in an 8-pin SO package and functions across an extended temperature range of -40°C to +85°C.

Feature Summary

• Utilizes proprietary curvature-correction circuitry and laser-trimmed thin-film resistors for high stability.
• Eliminates the need for external compensation capacitors due to internal frequency compensation.
• Offers supply current that remains virtually independent of the supply voltage.
• Capable of sourcing 5mA and sinking 2mA without requiring an external biasing resistor.

Applications

• Analog-to-Digital Converters (ADCs)
• Portable Battery-Powered Systems
• Precision +3V/+5V Systems

Procurement Notes

Verify the specific grade suffix (A or B) required for your application's accuracy and temperature coefficient specifications. Confirm the package type matches the design footprint. Ensure the input voltage supply meets the minimum dropout requirements relative to the 3.000V output. Check for RoHS compliance status if mandated by project regulations.

Selection Notes

Select this component when a stable 3.000V reference is needed with minimal board space constraints. The A-grade version offers tighter accuracy and lower drift compared to the B-grade. Consider the 100µA quiescent current for battery life calculations. Verify that the load current requirements do not exceed the 5mA sourcing or 2mA sinking limits defined in the datasheet.

Part Context

This part belongs to the MAX6161–MAX6168 family of precision voltage references manufactured by Analog Devices / Maxim Integrated. The family shares identical pinouts and general characteristics, differing primarily in output voltage options ranging from 1.25V to 5.0V. All members utilize the same 8-pin SO package and BiCMOS process technology.

Replacement Considerations

Other members of the MAX6161–MAX6168 series share the same package and pinout but provide different fixed output voltages. Direct substitution requires matching the specific 3.000V output requirement. Verify that any alternative device maintains compatible quiescent current and load regulation specifications.

FAQ

Does the MAX6163BESA+ require an external capacitor for stability?

No, the device is internally compensated and does not require an external compensation capacitor for frequency stability.

What is the difference between the MAX6163A and MAX6163B grades?

The MAX6163A has an initial accuracy of ±2mV and a maximum temperature coefficient of 5ppm/°C, while the MAX6163B has an initial accuracy of ±4mV and a maximum temperature coefficient of 10ppm/°C.