LT6658AHDE-2.5#PBF

Voltage Reference Overview

The LT6658AHDE-2.5#PBF is a precision dual output voltage reference from Analog Devices, operating within an industrial temperature range of -40°C to +125°C. It provides a fixed 2.5V output with an initial accuracy of ±0.05% and a maximum temperature coefficient of 10ppm/°C. The device features separate supply pins for each output, supporting up to 36V input voltage. Output 1 delivers up to 150mA sourcing current, while Output 2 supports up to 50mA. It utilizes Kelvin sense connections for high load regulation 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
• High current capability combining reference stability with linear regulator performance for heavy loading applications
• Kelvin sense connection on outputs ensures minimal load regulation error under varying current conditions
• Separate supply pins allow isolation of buffer amplifiers to reduce power consumption and improve noise performance

Voltage Reference Applications

• Microcontroller or FPGA systems requiring integrated ADC/DAC references
• Data acquisition systems demanding low drift and high accuracy
• Automotive control and monitoring circuits
• Precision low noise regulators in instrumentation and process control

Voltage Reference Procurement Notes

Verify the specific suffix DE indicates the DFN package and AH denotes the extended temperature grade when ordering. Confirm RoHS compliance status as parts ending with PBF are compliant. Check for availability of tape and reel options if different packaging is required for automated assembly processes.

Voltage Reference Selection Notes

Select this part when both high current drive and ultra-low drift are required simultaneously. The AH grade offers tighter temperature coefficients compared to B-grade alternatives. Ensure input voltage exceeds the dropout requirements for the desired load current. Consider the exposed pad for thermal management in high-power dissipation scenarios.

Voltage Reference Part Context

This component belongs to the LT6658 family of Refulator™ devices, which merge precision voltage reference technology with linear regulator capabilities. The family offers various output voltages and grades (A/B) across MSOP and DFN packages. The AHDE variant specifically targets high-reliability applications requiring extended temperature operation and precise tracking between two independent output channels.

Voltage Reference Replacement Considerations

LT6658BHDE-2.5#PBF offers similar functionality with relaxed accuracy and temperature coefficient specifications.