LT6658AHMSE-3.3#TRPBF

Overview

The LT6658AHMSE-3.3#TRPBF is a precision dual output voltage reference from Analog Devices, operating at a fixed 3.3V nominal output with an initial accuracy of ±0.05% and a maximum temperature coefficient of 10ppm/°C. It features Output 1 capable of sourcing up to 150mA and sinking 20mA, while Output 2 sources 50mA and sinks 20mA. The device operates within a specified junction temperature range of -40°C to 125°C and accepts input voltages up to 36V. Packaged in a 16-lead MSOP with an exposed thermal pad, it includes separate supply pins for each output.

Feature Summary

• Combines low drift, low noise reference performance with linear regulator capabilities
• Dual outputs track each other over temperature and load variations
• Kelvin sense connections provide precise load regulation under heavy loading
• Separate supply pins allow isolation and power consumption reduction

Applications

• Microcontroller or FPGA systems with integrated ADC/DAC
• Data acquisition systems requiring high precision
• Automotive control and monitoring circuits
• Precision low noise regulators

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when ordering. Confirm the H-grade designation matches the required -40°C to 125°C operating temperature range for your application. Ensure the 16-lead MSOP package footprint aligns with your PCB layout constraints. Check for RoHS compliance status if required by your manufacturing standards.

Selection Notes

Select this component when dual independent outputs are needed with identical precision specifications. The A-grade offers tighter accuracy and drift limits compared to B-grade options. Consider the exposed pad requirement for thermal management during high-current operation. Verify that the input voltage headroom meets the dropout requirements for both outputs simultaneously.

Part Context

This part belongs to the LT6658 family of Refulator devices, which merge voltage reference and linear regulator functions. The AHMSE variant specifically denotes the A-grade accuracy, H-grade extended temperature range, and MSOP package. Other family members include different voltage options like 1.2V, 2.5V, and 5V, as well as DFN package variants.

Replacement Considerations

LT6658AHMSE-3.3#PBF (Tube Packaging)

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 provides a shutdown function to reduce power consumption when the device is 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.