MAX6250BESA+T

Overview

The MAX6250BESA+T is a low-noise, precision voltage reference with a fixed 5.000V output and buried-zener technology. It operates within an extended temperature range of -40°C to +85°C and features a maximum temperature coefficient of 7.0ppm/°C. The device supports input voltages from 8V to 36V and provides ±15mA source/sink current capability. Key electrical specifications include ±0.02% initial accuracy, 3.0µVp-p noise (0.1Hz to 10Hz), and 20ppm/1000h long-term stability. It is housed in an 8-pin SO package.

Feature Summary

• Utilizes buried-zener technology for superior noise performance
• Offers optional external trimming and noise reduction capabilities
• Maintains stability across all capacitive loads up to 100µF
• Features industry-standard pinout for easy integration

Applications

• High-resolution analog-to-digital converters
• Digital-to-analog converters
• High-accuracy industrial process control systems
• Precision digital voltmeters
• Automated test equipment

Procurement Notes

Verify the specific suffix 'E' confirms the -40°C to +85°C operating range and 'SA' indicates the 8-pin SOIC package. Confirm the '+T' suffix denotes tape-and-reel packaging. Ensure the component matches the lead-free/RoHS-compliant designation indicated by the '+' symbol. Cross-reference the manufacturer part number against official Analog Devices documentation to validate authenticity and revision status before procurement.

Selection Notes

Select this component when high precision and low noise are critical for 5V applications. The extended temperature range suits harsh environments where standard commercial grades fail. Consider the trim pin if fine-tuning is required beyond factory accuracy. Evaluate power consumption and line regulation requirements against the 8V to 36V input range constraints.

Part Context

This device belongs to the MAX6225/MAX6241/MAX6250 family of low-noise precision references. While sharing identical architecture and pinouts, it differs from the MAX6225 (2.5V) and MAX6241 (4.096V) solely by its fixed 5.000V output setting. All variants utilize the same CMOS process and offer similar stability and noise characteristics tailored for different system voltage needs.

Replacement Considerations

Direct functional substitutes within the same family include MAX6250AESA+T for tighter temperature coefficients or MAX6250BEPA+ for through-hole mounting. Verify that any replacement maintains the 8-pin SO package dimensions and pin configuration to ensure board compatibility without redesign.

FAQ

How does the NR pin affect noise performance?

Connecting a 1µF capacitor to the NR pin augments wideband noise reduction. Larger capacitance values do not significantly improve noise performance further.

Is the device stable with capacitive loads?

Yes, the MAX6250 is stable with capacitive load values ranging from 0µF to 100µF across all load current conditions.

Can the output voltage be adjusted externally?

Yes, the TRIM pin allows for external adjustment of approximately ±1% using a potentiometer connected between OUT and GND.