MAX6191BESA

Overview

The MAX6191BESA+T is a precision, micropower, low-dropout voltage reference from the MAX6190–MAX6195/MAX6198 family. It provides a fixed output voltage of 2.048V with an initial accuracy of ±2mV 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 2.5V to 12.6V and features internal compensation for stability with capacitive loads up to 2.2nF.

Feature Summary

• Utilizes proprietary curvature-correction circuitry and laser-trimmed thin-film resistors to achieve high initial accuracy and low temperature drift.
• Series-mode architecture ensures supply current remains virtually independent of input voltage variations, maximizing efficiency in battery-powered applications.
• Internally compensated design guarantees fast settling times and stable operation with capacitive loads ranging from 0 to 2.2nF.

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 (e.g., +T) against the manufacturer's official ordering guide to confirm package type, lead finish, and reel specifications. Ensure the selected variant matches the required initial accuracy grade and temperature coefficient limits defined in the datasheet selector guide before finalizing procurement.

Selection Notes

Select this component when a fixed 2.048V reference with high precision is required. Consider the MAX6191BESA+T for designs needing low quiescent current and minimal dropout voltage. Evaluate the trade-off between settling time and load capacitance requirements, as the device settles to within 0.1% of its final value rapidly without external components.

Part Context

This part belongs to the MAX6190–MAX6195/MAX6198 series of precision bandgap references manufactured by Analog Devices / Maxim Integrated. The family shares common architectural features including micropower consumption and low-dropout capabilities, differentiated primarily by their fixed output voltages and accuracy grades.

Replacement Considerations

Other members of the MAX6190–MAX6195/MAX6198 family share identical pinouts and packaging but offer different output voltages or accuracy grades. Verify that alternative parts match the required 2.048V output and ±2mV accuracy specification.