LT6658AHDE-3.3#PBF

Overview

The LT6658AHDE-3.3#PBF is a precision dual output voltage reference from Analog Devices, operating at a fixed 3.3V output with an initial accuracy of ±0.05% and a maximum temperature coefficient of 10ppm/°C. It features Output 1 sourcing up to 150mA and Output 2 sourcing up to 50mA, housed in a 16-lead DFN package. The device supports a wide input voltage range up to 36V and operates within a junction temperature range of -40°C to 125°C.

Feature Summary

• Combines the performance of a precision voltage reference and a linear regulator for driving high-resolution ADCs and DACs under heavy loading.
• Features Kelvin sense connections on outputs to achieve low load regulation and maintain precision across varying current demands.
• Includes separate supply pins for each output to allow power consumption reduction and buffer amplifier isolation.

Applications

• Microcontroller or FPGA systems with integrated ADC/DAC
• Data acquisition systems requiring stable reference voltages
• Automotive control and monitoring circuits

Procurement Notes

Verify the specific suffix 'AHDE' corresponds to the H-grade (-40°C to 125°C) and DFN package before ordering. Confirm that the '#PBF' designation indicates RoHS compliance. Check manufacturer documentation for any recent lifecycle changes or alternative package options if availability is restricted.

Selection Notes

Select this component when both high current capability and ultra-low drift are required simultaneously. The H-grade ensures operation in extended temperature environments compared to I-grade alternatives. Ensure the input voltage meets the minimum dropout requirements for the desired load currents.

Part Context

This part belongs to the LT6658 family of Refulators, which merge reference and regulator functions. The AHDE variant specifically denotes the Automotive/H-grade temperature rating and the DFN package style, distinguishing it from MSOP packages or lower temperature grades within the same series.

Replacement Considerations

LT6658BHDE-3.3#PBF (B-grade, 20ppm/°C)

FAQ

What is the maximum source current for Output 1?

Output 1 can source up to 150mA while maintaining specified regulation characteristics.

How does the device handle thermal stress?

The device includes thermal shutdown protection to prevent damage during thermal overstress conditions.