MAX6163BESA

Overview

The MAX6163BESA+ is a precision, low-dropout, micropower voltage reference from the MAX6161–MAX6168 family. 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 VOUT + 0.2V 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 precision.
• 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 (e.g., A or B) to confirm the required initial accuracy and temperature coefficient grades. Ensure the input voltage source can provide sufficient current during turn-on if operating near minimum dropout conditions. Confirm RoHS compliance status based on the ordering suffix. Check for availability constraints as distribution may vary by region.

Selection Notes

Select the MAX6163BESA+ when a stable 3.000V reference is needed with minimal board space due to internal compensation. Choose the A-grade version for tighter accuracy and lower temperature drift requirements. Consider the low quiescent current for battery-operated applications where power efficiency is critical compared to traditional shunt references.

Part Context

This component belongs to the MAX6161–MAX6168 series of precision voltage references manufactured by Analog Devices / Maxim Integrated. The series shares common architectural features including low-dropout operation and micropower consumption. The MAX6163 variant specifically targets the 3.000V output segment, complementing other standard voltages like 1.25V, 2.5V, and 5.0V within the same package footprint.

Replacement Considerations

Other members of the MAX6161–MAX6168 family share the same pinout and package but offer different fixed output voltages. Verify that the alternative part number matches the required 3.000V output specification before substitution.

FAQ

Does the MAX6163 require an external capacitor for stability?

No, the devices are internally compensated and do not require an external compensation capacitor for frequency stability.

What is the difference between the A and B grades?

The A grade offers higher initial accuracy (±2mV) and a lower maximum temperature coefficient (5ppm/°C), while the B grade has slightly relaxed specifications (±4mV accuracy and 10ppm/°C).