LT6658BHMSE-1.8#PBF

Voltage Reference Overview

The LT6658BHMSE-1.8#PBF is a precision dual output voltage reference from Analog Devices, operating at a fixed 1.8V output with B-grade accuracy of ±0.1% and a temperature coefficient of 20ppm/°C. It features separate supply pins for each output, supporting up to 36V input voltage. The device provides high current capability with Output 1 sourcing up to 150mA and Output 2 sourcing up to 50mA. It operates within a junction temperature range of -40°C to 125°C and includes thermal shutdown protection.

Voltage Reference Feature Summary

• Dual independent outputs with identical precision specifications that track each other over temperature and load variations
• Integrated Refulator architecture combining precision reference performance with linear regulator capabilities for heavy loading
• Kelvin sense connections on outputs to achieve extremely low load regulation across wide current ranges
• Separate supply pins allow isolation of buffer amplifiers to reduce power consumption

Voltage Reference Applications

• Driving reference inputs of high resolution ADCs and DACs under heavy loading conditions
• Simultaneous powering of microcontrollers and other circuitry alongside precision analog components
• Precision low noise regulators requiring stable voltage rails
• Data acquisition systems demanding high accuracy and low drift

Voltage Reference Procurement Notes

Verify the specific suffix HMSE indicates the MSOP-16 package and H-grade temperature rating. Confirm the B-grade designation matches the required initial accuracy and temperature coefficient specifications. Ensure the #PBF suffix aligns with RoHS compliance requirements for your manufacturing process. Cross-reference the part number against the latest manufacturer datasheet to confirm availability status and any potential obsolescence notices.

Voltage Reference Selection Notes

Select this component when dual tracked outputs are required for synchronized analog and digital domains. The B-grade specification offers a balance between cost and performance for general precision applications. Consider the H-grade variant if operation above 85°C is necessary. Evaluate the separate supply pin configuration if independent power management for each output channel is desired to optimize system efficiency.

Voltage Reference Part Context

This part belongs to the LT6658 family of precision dual output references. The family includes A-grade and B-grade options with various fixed voltage outputs such as 1.2V, 2.5V, 3.3V, and 5V. Variants are available in both MSOP-16 and DFN packages. The family is designed to replace standard LDOs where higher precision and lower noise are critical for system performance.

Voltage Reference Replacement Considerations

LT6658AHMSE-1.8#PBF (A-grade version)

Voltage Reference FAQ

Can the output voltage be adjusted?

Yes, each output can be configured with external resistors to provide an output voltage up to 6V.

What is the purpose of the OD pin?

The OD pin allows for shutdown control of the device to reduce power consumption when not in use.

How does the device handle short circuits?

The LT6658 includes short circuit and thermal protection to prevent thermal overstress during fault conditions.