MAX6198BESA+

Overview

The MAX6198BESA+ is a precision, micropower, low-dropout series-mode bandgap voltage reference. It provides a fixed output voltage of 4.096V with an initial accuracy of ±5mV and a maximum temperature coefficient of 5ppm/°C. The device draws a maximum quiescent supply current of 35µA and supports source and sink currents up to 500µA. It operates within a supply voltage range of 4.296V to 12.6V and features internal compensation for stability with capacitive loads up to 2.2nF.

Feature Summary

• Proprietary curvature-correction circuit and laser-trimmed thin-film resistors ensure high initial accuracy and very low temperature coefficient.
• Micropower design with virtually input-voltage-immune supply current maximizes efficiency in battery-powered applications.
• Internally compensated architecture allows stable operation with capacitive loads up to 2.2nF without external components.

Applications

• Hand-Held Instruments
• Analog-to-Digital and Digital-to-Analog Converters
• Industrial Process Control
• Precision 3V/5V Systems
• Hard-Disk Drives

Procurement Notes

Verify the specific suffix 'B' indicates the required ±5mV initial accuracy tier against the datasheet selector guide. Confirm the '+T' designation matches the reel packaging requirement if applicable, as standard ordering lists the tube variant. Ensure the SOIC-8 package footprint aligns with the target PCB land pattern specifications.

Selection Notes

Select this component when a fixed 4.096V reference is required with strict limits on temperature drift and initial tolerance. The low dropout characteristic makes it suitable for systems where the input voltage margin is minimal. Verify that the load requirements do not exceed the guaranteed 500µA sourcing or sinking capability.

Part Context

This part belongs to the MAX6190–MAX6195/MAX6198 family of precision voltage references manufactured by Analog Devices / Maxim Integrated. The family utilizes BiCMOS process technology and offers various fixed output voltages ranging from 1.25V to 5.0V across different accuracy grades (A, B, C).

Replacement Considerations

Other members of the MAX619x family such as MAX6198A or MAX6198C offer the same 4.096V output but with different initial accuracy tolerances (±2mV and ±10mV respectively). Cross-referencing the specific accuracy grade required by the application is necessary before substitution.