MAX6250BESA+

Overview

The MAX6250BESA+ is a buried-zener voltage reference providing a fixed 5.000V output in an 8-pin SO package. It operates within an extended temperature range of -40°C to +85°C and accepts input voltages from 8V to 36V. The device features ±0.02% initial accuracy, a maximum temperature coefficient of 7ppm/°C, and low noise performance with 3µVp-p (0.1Hz to 10Hz) and 2.5µVRMS (10Hz to 1kHz). Supply current is typically 3.0mA, while the output can source or sink up to 15mA.

Feature Summary

• Utilizes buried-zener technology for superior noise reduction and stability
• Offers external trimming capability via the TRIM pin for precise voltage adjustment
• Supports optional wideband noise reduction through the NR pin connection
• Maintains stability across all capacitive loads without oscillation

Applications

• High-resolution analog-to-digital and digital-to-analog converters
• High-accuracy industrial and process control systems
• Digital voltmeters and high-accuracy reference standards
• Automated test equipment (ATE)
• Precision current sources

Procurement Notes

Verify that the component matches the specific B-grade specification for the -40°C to +85°C operating range. Confirm the 8-pin SO package format aligns with board layout requirements. Ensure the ordering suffix corresponds to lead-free and RoHS compliance standards as indicated by the plus sign. Cross-reference the manufacturer part number against official distributor catalogs to validate authenticity and revision status before procurement.

Selection Notes

Select this component when a fixed 5V precision reference is required for high-resolution data conversion systems. The B-grade variant provides a higher maximum temperature coefficient compared to the A-grade version but supports a wider operating temperature range. Consider the available external trim and noise reduction pins if circuit optimization is necessary. Verify that the 15mA load regulation capabilities meet the system's sourcing and sinking current demands.

Part Context

This device belongs to the MAX6225/MAX6241/MAX6250 family of low-noise, precision voltage references. While sharing identical architecture and pinouts, the MAX6250 is specifically configured for a 5.000V output, distinguishing it from the 2.500V MAX6225 and the 4.096V MAX6241. All members utilize CMOS processes and offer industry-standard pin configurations for easy interchangeability within designs requiring different reference voltages.

Replacement Considerations

Direct replacements include other variants within the MAX6225/MAX6241/MAX6250 family, such as the MAX6250AESA+, which shares the same package and function but differs in temperature coefficient specifications. Ensure any substitute maintains the required -40°C to +85°C operating range and 8-pin SO footprint.