MAX6226ALA33+

Overview

The MAX6226ALA33+ is an ultra-low-noise, high-precision series voltage reference featuring a fixed 3.3V output. It utilizes curvature-correction circuitry and laser-trimmed thin-film resistors to achieve a maximum temperature coefficient of 3ppm/°C and an initial accuracy of ±0.02%. The device operates within a supply voltage range of 3.5V to 12.6V with a maximum dropout voltage of 400mV at 10mA load current. It draws a typical quiescent supply current of 380µA and supports up to 10mA sink/source capability. The component is housed in an 8-pin hermetically sealed ceramic LCC package.

Feature Summary

• Hermetically sealed 8-pin ceramic LCC package eliminates humidity-induced stress for superior long-term stability
• Ultra-low flicker noise architecture provides 1.95µVP-P noise (0.1Hz to 10Hz) without increasing supply current
• Independent force and sense outputs enable remote sensing to cancel trace voltage drops
• Noise reduction pin allows wideband noise improvement via external capacitor connection

Applications

• High-resolution A/D and D/A converters
• ATE equipment
• Precision current sources
• Digital voltmeters
• High-accuracy industrial and process control systems

Procurement Notes

Verify the specific ordering suffix matches the required packaging format. Confirm that the supplier documentation explicitly states compliance with RoHS standards. Ensure the part number corresponds to the ceramic LCC package variant rather than plastic alternatives. Cross-reference the manufacturer's latest datasheet revision to validate electrical characteristics against design requirements.

Selection Notes

Select this component when system performance requires minimal low-frequency noise and exceptional long-term drift stability. The ceramic package is necessary for environments where humidity affects plastic packages. Verify that the input supply voltage remains above the minimum dropout threshold across all operating temperatures. Consider the increased turn-on settling time if utilizing the noise reduction capacitor feature.

Part Context

This device belongs to the MAX6226 family of ultra-high-precision series voltage references manufactured by Analog Devices / Maxim Integrated. The family includes variants with 2.5V, 3.3V, and 5.0V fixed outputs. All members share the same low-noise architecture, laser-trimmed resistor technology, and hermetic ceramic packaging designed for demanding precision applications.

Replacement Considerations

Direct replacements include MAX6226ALA25+ and MAX6226ALA50+. These parts share identical pinouts, package types, and electrical features, differing only in their fixed output voltages.