MAX6191CESA

Overview

The MAX6191CESA+T is a precision, micropower, low-dropout voltage reference with a nominal output of 2.048V. It features a maximum initial accuracy of ±10mV and a temperature coefficient under 25ppm/°C. The device draws a maximum quiescent supply current of 35µA and supports source/sink currents up to 500µA. It operates within a supply voltage range of 2.5V to 12.6V and is housed in an 8-pin SO package.

Feature Summary

• Proprietary curvature-correction circuit and laser-trimmed thin-film resistors ensure high initial accuracy and very low temperature coefficient.
• Series-mode architecture provides supply current virtually immune to input voltage variations for optimized efficiency.
• Internally compensated design guarantees stability with capacitive loads up to 2.2nF without requiring external components.

Applications

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

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when sourcing. Confirm RoHS compliance via the '+' designation. Ensure the input voltage source can provide transient turn-on currents exceeding nominal levels to guarantee reliable startup conditions.

Selection Notes

Select this component for applications requiring a stable 2.048V reference with minimal power consumption. Verify that the required accuracy falls within the C-grade tolerance limits. Consider the internal compensation benefits if board space constraints prevent adding external stabilization capacitors.

Part Context

This part belongs to the MAX6190–MAX6195/MAX6198 family of precision bandgap references manufactured by Analog Devices Inc./Maxim Integrated. The series utilizes BiCMOS process technology to deliver low noise and fast settling times suitable for sensitive analog signal chains.

Replacement Considerations

Other members of the MAX619x family offer different fixed output voltages (e.g., MAX6190 at 1.25V or MAX6195 at 5.0V) while maintaining identical pinouts and performance characteristics. Cross-reference electrical specifications to ensure the alternative voltage meets system requirements.