LT6658BHDE-3#TRPBF

Overview

The LT6658BHDE-3#TRPBF is a precision dual output voltage reference from Analog Devices, featuring a fixed 3.0V output per channel. It operates within the H-grade temperature range of -40°C to +125°C and utilizes a 16-lead (4mm × 3mm) DFN package with an exposed thermal pad. The device combines low drift and low noise performance with high current drive capabilities, offering 150mA sourcing on Output 1 and 50mA sourcing on Output 2. Initial accuracy is specified at ±0.1% maximum, with a temperature coefficient of 20ppm/°C maximum.

Feature Summary

• Dual independent outputs with identical precision specifications that track each other over temperature and load variations
• Kelvin sense connections enable ultra-low load regulation for driving heavy loads such as high-resolution ADCs and DACs
• Separate supply pins allow isolation of buffer amplifiers to reduce power consumption and enhance stability
• Integrated thermal shutdown and short-circuit protection prevent overstress during fault conditions

Applications

• Microcontroller or FPGA systems requiring integrated ADC/DAC reference supplies
• Data acquisition systems demanding high precision and low noise references
• Automotive control and monitoring circuits operating in extended temperature environments
• Precision instrumentation and process control equipment

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 range for your application. Ensure the DFN package footprint aligns with your PCB layout constraints. Check for RoHS compliance status if environmental regulations apply to your manufacturing process.

Selection Notes

Select this component when both high current drive and low noise are required simultaneously. The B-grade offers a balance of cost and performance with ±0.1% accuracy. Consider the separate supply pins if minimizing cross-talk between outputs is critical. Verify input voltage headroom requirements against the dropout characteristics for your specific load currents.

Part Context

This part belongs to the LT6658 family of Refulator devices, which merge voltage reference and linear regulator functions. The BHDE variant specifically denotes the B-grade accuracy, H-grade temperature rating, and DFN package style. Other options include A-grade for tighter tolerances and MSE packages for different form factors.

Replacement Considerations

LT6658BIDE-3#TRPBF provides equivalent electrical performance in a DFN package but is rated for the I-grade (-40°C to 85°C) temperature range instead of the H-grade.