MAX6133A41+

Overview

The MAX6133A41+ is a high-precision, low-power series voltage reference featuring a fixed output of 4.096V and an initial accuracy of ±0.04%. It utilizes bandgap technology with laser-trimmed thin-film resistors to achieve a maximum temperature coefficient of 3ppm/°C in the SO package. The device operates within a supply voltage range of 2.7V to 12.6V, drawing a typical quiescent current of 40µA. It provides a source-current capability of up to 15mA with a maximum dropout voltage of 200mV. The component is housed in an 8-pin SO package and supports an operating temperature range from -40°C to +125°C.

Feature Summary

• Low power consumption with virtually supply-voltage-independent quiescent current
• High precision achieved through laser-trimmed thin-film resistors and post-package trimming
• Low dropout voltage design for efficient operation across wide input ranges
• Bandgap technology ensures excellent noise performance and long-term stability

Applications

• Precision regulators
• A/D and D/A converters
• Power supplies
• High-accuracy industrial and process control systems
• Hand-held instruments

Procurement Notes

Verify the specific suffix 'AASA' indicates the 8-pin SO package variant with 3ppm/°C tempco, distinct from the µMAX version. Confirm the '_41' suffix corresponds to the 4.096V output option. Ensure compliance with RoHS3 standards as indicated by the '+' designation. Cross-reference the manufacturer part number with official Analog Devices or Maxim Integrated documentation to validate revision levels and pinout configurations before integration.

Selection Notes

Select this component when system requirements demand high accuracy (±0.04%) combined with ultra-low power consumption (40µA). The 3ppm/°C temperature coefficient makes it suitable for applications requiring minimal drift over wide temperature ranges. Consider the 200mV dropout voltage for battery-powered designs where headroom is limited. Verify that the 15mA source current meets load requirements, as shunt references may be needed for higher currents.

Part Context

The MAX6133 family comprises high-precision, low-power voltage references available in multiple output voltages and packages. The A-grade SO package variants offer superior temperature coefficients compared to µMAX versions. This specific model belongs to the series-mode reference category, which typically offers better efficiency and lower external component counts than shunt references. The family is designed for portable and communication applications requiring tiny packaging and excellent precision.

Replacement Considerations

Direct substitutes include other MAX6133 variants with different output voltages or packages, such as MAX6133AASA25+ or MAX6133AASA30+. For package changes, verify thermal and mechanical compatibility between SO and µMAX formats. Alternative families like MAX6126 or MAX6143 offer similar precision but may differ in noise characteristics, current consumption, or dropout voltage specifications.