MAX6194CESA

Overview

The MAX6194CESA+ is a precision, micropower, low-dropout voltage reference featuring a fixed 4.5V output. It utilizes a proprietary curvature-correction circuit and laser-trimmed thin-film resistors to achieve high initial accuracy of ±25mV and a maximum temperature coefficient of 25ppm/°C. The device draws a maximum quiescent supply current of 35µA and supports source and sink currents up to 500µA with a dropout voltage of approximately 200mV at full load. It operates within an input voltage range of 4.7V to 12.6V and is housed in an 8-pin SO package.

Feature Summary

• Proprietary curvature-correction circuitry ensures high initial accuracy and very low temperature drift.
• Micropower series-mode architecture provides supply current virtually immune to input voltage variations.
• Internally compensated design guarantees stability with capacitive loads up to 2.2nF without external components.

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 against official documentation to confirm lead-free status and compliance specifications. Confirm that the ordering code matches the required output voltage tolerance and temperature coefficient grade. Ensure the package type aligns with the target PCB footprint requirements before finalizing procurement orders.

Selection Notes

Select this component for applications requiring a stable 4.5V reference with minimal power consumption. The internal compensation allows for reduced board space by eliminating the need for external stabilization capacitors. Verify that the input voltage remains above the minimum dropout threshold to maintain regulation under maximum load conditions.

Part Context

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

Replacement Considerations

Other members of the MAX619x family (e.g., MAX6194BESA+, MAX6194AESAV+) offer identical pinouts and functionality but differ in initial accuracy and temperature coefficient specifications. Substitutes must match the 4.5V output requirement and 8-SO package form factor.