LT6658AHDE-3#PBF

Overview

The LT6658AHDE-3#PBF is a precision dual output voltage reference from Analog Devices, featuring an integrated Refulator architecture. It provides two independent outputs with a fixed nominal voltage of 3V and an initial accuracy of ±0.05%. The device operates within a junction temperature range of -40°C to +125°C and utilizes a 16-lead DFN package. Key electrical specifications include a maximum temperature coefficient of 10ppm/°C, a maximum input voltage of 36V, and a typical low-noise performance of 1.6ppm peak-to-peak in the 0.1Hz to 10Hz bandwidth.

Feature Summary

• Combines precision voltage reference and linear regulator functions for high-current driving capability
• Features Kelvin sense connections on both outputs to minimize load regulation error
• Includes separate supply pins for each output to allow power consumption reduction and buffer isolation
• Integrates thermal shutdown protection and short-circuit current limiting

Applications

• Dual output tracking reference systems
• Microcontroller or FPGA applications with ADC/DAC interfaces
• Data acquisition systems requiring stable biasing
• Precision low noise regulators

Procurement Notes

Verify the specific suffix 'AHDE' corresponds to the H-grade (-40°C to 125°C) and DFN-16 package configuration. Confirm RoHS compliance via the '#PBF' designation. Ensure the ordering part number matches the required 3V output option within the LT6658 family before procurement.

Selection Notes

Select this component when extended high-temperature operation up to 125°C is required alongside high precision. The DFN package offers thermal management benefits compared to MSOP variants. Verify that the 3V fixed output meets system requirements, as external resistors can adjust voltages up to 6V if needed.

Part Context

This part belongs to the LT6658 family of precision dual output references. It shares architectural similarities with other grades like the I-grade (-40°C to 85°C) but differs in temperature rating and package type. The 'A' grade denotes the highest accuracy tier within the series.

Replacement Considerations

LT6658BIDE-3#PBF (Lower accuracy/tempco)

FAQ

What is the maximum input voltage for the LT6658AHDE-3#PBF?

The maximum specified input voltage for VIN, VIN1, and VIN2 is 36V.

How does the LT6658 handle output loading?

It uses a Refulator design with Kelvin sense connections to maintain precision under heavy loading, supporting up to 150mA sourcing on Output 1.