MAX6198AESA+T

Overview

The MAX6198AESA+T is a precision, micropower, low-dropout series-mode bandgap voltage reference providing a fixed 4.096V output. It utilizes proprietary curvature-correction circuitry and laser-trimmed thin-film resistors to achieve high initial accuracy and a maximum temperature coefficient of 5ppm/°C. The device draws a maximum quiescent supply current of 35µA, which remains virtually independent of input voltage variations. It supports sourcing and sinking currents up to 500µA with a dropout voltage of approximately 100mV at full load. The component operates within an input voltage range of 4.296V to 12.6V and is stable with capacitive loads up to 2.2nF.

Feature Summary

• Proprietary curvature-correction circuit combined with laser-trimmed thin-film resistors ensures high initial accuracy and minimal temperature drift.
• Micropower architecture delivers a maximum quiescent supply current of 35µA that is virtually immune to input voltage fluctuations.
• Low-dropout design allows the device to source and sink up to 500µA while maintaining regulation with minimal headroom.
• Internally compensated for fast settling times and guaranteed stability 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 'V' if automotive qualification under AEC-Q100 standards is required, as standard versions lack this certification. Confirm package type matches the 8-pin SOIC footprint. Ensure input voltage sources can handle transient turn-on currents exceeding nominal levels to guarantee reliable startup behavior.

Selection Notes

Select this component when a fixed 4.096V reference is needed with strict power consumption limits. The internal compensation eliminates the need for external stabilization capacitors in many designs. Consider the 5ppm/°C temperature coefficient for applications requiring high thermal stability without complex trimming.

Part Context

This part belongs to the MAX6190–MAX6195/MAX6198 family of precision voltage references manufactured by Analog Devices / Maxim Integrated. The family shares identical pinouts and core architectures, differing primarily in fixed output voltages ranging from 1.25V to 5.0V. All members utilize BiCMOS processes and offer similar micropower characteristics and low-dropout performance profiles.

Replacement Considerations

Other members of the MAX619x family (e.g., MAX6190–MAX6195) are pin-compatible but provide different fixed output voltages. Verify that the required reference voltage matches the 4.096V specification before substituting with other variants in this series.