MAX6193BESA+T

Overview

The MAX6193BESA+T is a precision, micropower, low-dropout series-mode voltage reference delivering a nominal output of 3.0V. It utilizes a proprietary curvature-correction circuit and laser-trimmed thin-film resistors to achieve high initial accuracy and very low temperature coefficient. The device draws a maximum quiescent supply current of 35µA, making it suitable for battery-powered instruments. It guarantees load regulation for source and sink currents up to 500µA and is internally compensated for stability with capacitive loads up to 2.2nF.

Feature Summary

• Proprietary curvature-correction circuit ensures high initial accuracy and low temperature drift
• Micropower operation with maximum 35µA quiescent supply current
• Low dropout voltage capability supporting source and sink currents up to 500µA
• Internally compensated design stable with capacitive loads up 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 'B' corresponds to the required initial accuracy and temperature coefficient grade before procurement. Confirm that the SOIC-8 package and -40°C to +85°C operating range align with the target application environment. Ensure input voltage sources can provide transient turn-on currents exceeding nominal levels if operating near minimum dropout conditions.

Selection Notes

Select this component when a fixed 3.0V reference is required with strict power budget constraints. The series-mode architecture offers efficiency advantages over shunt references by drawing load current only when needed. Verify that the system's capacitive load remains within the 2.2nF stability limit without additional external compensation components.

Part Context

This part belongs to the MAX6190–MAX6195/MAX6198 family of precision voltage references from Analog Devices / Maxim Integrated. The family shares common architectural features including BiCMOS processing and similar pin configurations, differentiated primarily by output voltage and accuracy grades. The MAX6193 specifically targets applications requiring a 3.0V rail.

Replacement Considerations

Other members of the MAX619x family (e.g., MAX6190, MAX6191, MAX6192) offer identical pinouts and functionality but with different nominal output voltages. Direct substitution requires matching the specific output voltage requirement of the circuit design.