MAX6034AEXR30+T

Overview

The MAX6034AEXR30+T is a precision series voltage reference from the MAX6034 family, manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed output voltage of 3V with an initial accuracy of ±0.2% and a maximum temperature coefficient of 30ppm/°C. The device operates within an input voltage range of VOUT + 0.2V to 5.5V and draws a typical quiescent supply current of 125µA. It features a low dropout voltage of 200mV at 1mA load current and can source up to 1mA while sinking 200µA. The component is housed in a miniature 3-pin SC-70 surface-mount package and is rated for operation over an extended temperature range of -40°C to +85°C.

Feature Summary

• Proprietary curvature-correction circuit and laser-trimmed thin-film resistors ensure high precision and stability.
• Micropower design with supply current virtually independent of input voltage variations.
• Internally compensated architecture eliminates the need for external compensation capacitors.
• Capacitive-load stability allows operation with loads ranging from 0 to 1µF without oscillation.

Applications

• Hand-Held Equipment
• Data-Acquisition Systems
• Industrial and Process Control Systems
• Battery-Operated Equipment
• Hard-Disk Drives

Procurement Notes

Verify the specific suffix 'EXR30' corresponds to the 3V output variant and the 'A' grade for ±0.2% accuracy. Confirm the '+T' designation indicates tape-and-reel packaging. Ensure the manufacturer is identified as Analog Devices or Maxim Integrated. Check RoHS compliance status if required by your assembly specifications. Validate that the SC-70-3 package matches your PCB footprint requirements.

Selection Notes

Select this component when space-constrained designs require a precise voltage reference in a small SC-70 package. It is suitable for battery-powered applications due to its micropower consumption and low dropout characteristics. Choose this part over shunt references if board space for external resistors is limited. Ensure the application requires a series-mode reference capable of sourcing 1mA and sinking 200µA. Verify that the operating temperature range of -40°C to +85°C meets environmental needs.

Part Context

The MAX6034AEXR30+T belongs to the MAX6034 family of precision, micropower, low-dropout voltage references. This family utilizes a proprietary bandgap technology with curvature correction to achieve low temperature coefficients. The devices are designed to replace conventional shunt references by eliminating the need for external biasing resistors. The family includes various output voltages and accuracy grades, all packaged in compact surface-mount formats for modern electronics.

Replacement Considerations

Direct substitutes include other MAX6034 variants with different output voltages (e.g., MAX6034AEXR25+T for 2.5V) or accuracy grades (MAX6034BEXR30+T for ±0.4%). Cross-family replacements may include similar SC-70 voltage references from other manufacturers, but pin compatibility and electrical parameters must be verified against the MAX6034 datasheet.

FAQ

Does the MAX6034AEXR30+T require an external capacitor for stability?

No, the device is internally compensated and does not require an external compensation capacitor. It remains stable with capacitive loads ranging from 0 to 1µF.

What is the maximum sink current capability of the MAX6034AEXR30+T?

The MAX6034AEXR30+T can sink up to 200µA of load current.

How does the supply current of the MAX6034 vary with input voltage?

The supply current is virtually independent of the supply voltage, with a maximum variation of only 16µA/V across the operating input range.