MAX6198CESA+

Overview

The MAX6198CESA+ is a precision, micropower, low-dropout voltage reference featuring a fixed output of 4.096V. 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 and supports source and sink currents up to 500µA with guaranteed load regulation. It operates within an input voltage range of VOUT + 0.2V to 12.6V and maintains stability with capacitive loads up to 2.2nF.

Feature Summary

• Proprietary curvature-correction circuit combined with laser-trimmed thin-film resistors for high precision
• Micropower operation with maximum 35µA quiescent supply current virtually immune to input variations
• Low-dropout design capable of sourcing and sinking up to 500µA load currents
• Internally compensated for fast settling and 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 'C' corresponds to the required initial accuracy grade (+/- 25mV) and temperature coefficient (< 25ppm/°C) before procurement. Confirm the package type matches the 8-pin SO footprint. Ensure the input voltage source can provide sufficient current during turn-on transients to guarantee reliable startup under all operating conditions.

Selection Notes

Select this component when a fixed 4.096V reference is required with strict power consumption limits. The series-mode architecture offers superior efficiency compared to shunt references as it draws load current only when needed. Verify that the application does not require shutdown functionality or higher output voltages than 4.096V. Consider the 8-pin SO package constraints for board space availability.

Part Context

This part belongs to the MAX6190–MAX6195/MAX6198 family of precision voltage references manufactured by Analog Devices / Maxim Integrated. The family shares common architectural features including micropower consumption and low dropout characteristics, differentiated primarily by output voltage levels and accuracy grades. The MAX6198 specifically provides the 4.096V output option within this lineup.

Replacement Considerations

Direct functional replacements within the same family include MAX6198AESA+ (higher accuracy) and MAX6198BESA+. Cross-family alternatives like MAX6162 or MAX6008 differ in topology or pinout and require schematic review.