MAX6163BESA+T

Overview

The MAX6163BESA+T is a precision, micropower, low-dropout 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 reliably 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.
• Offers supply current that is virtually independent of the supply voltage, maximizing efficiency.
• Internally compensated design eliminates the need for external compensation capacitors.
• 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 suffix code to confirm the exact initial accuracy and temperature coefficient grade required for the application. Ensure the input voltage remains above the minimum dropout threshold relative to the 3.000V output. Confirm RoHS compliance status if mandated by project specifications. Check for lead-free packaging requirements during procurement.

Selection Notes

Select this component when a stable 3.000V reference is needed with minimal board space due to the lack of external capacitor requirements. Consider the A-grade version for tighter accuracy and lower drift specifications. Evaluate the 100µA quiescent current against battery life constraints. Verify that the load current does 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 electrical characteristics, differing primarily in their fixed 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

Direct functional substitutes within the same family include MAX6161BESA+T, MAX6162BESA+T, MAX6164BESA+T, MAX6165BESA+T, MAX6166BESA+T, MAX6167BESA+T, and MAX6168BESA+T. These parts share the same package and operating conditions but provide different fixed output voltages.

FAQ

Does the MAX6163BESA+T require an external capacitor for stability?

No, the devices are internally compensated and do not require an external compensation capacitor for frequency stability, although an output capacitor may be used to improve transient response.

What is the difference between the A and B grades of the MAX6163?

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