LT6658AHMSE-2.5#PBF

Overview

The LT6658AHMSE-2.5#PBF is a precision dual output voltage reference from Analog Devices, operating at a nominal 2.5V. It combines low drift and low noise performance with linear regulator capabilities. The device features an A-grade initial accuracy of ±0.05% maximum and a temperature coefficient of 10ppm/°C maximum. Output 1 supports up to 150mA sourcing current, while Output 2 supports up to 50mA. Both outputs track each other over temperature and load variations. The component operates within a junction temperature range of -40°C to 125°C and utilizes a 16-lead MSOP package.

Feature Summary

• Dual output architecture with independent supply pins for isolation
• Kelvin sense connections for precise load regulation
• Integrated thermal shutdown protection
• Configurable output voltage via external resistors

Applications

• Microcontroller or FPGA with ADC/DAC applications
• Data acquisition systems
• Automotive control and monitoring
• Precision low noise regulators
• Instrumentation and process control

Procurement Notes

Verify the specific suffix #PBF indicates RoHS compliance when ordering. Confirm the AH designation corresponds to the H-grade temperature range (-40°C to 125°C) required for your application environment. Ensure the MSOP-16 package footprint matches your PCB design constraints. Cross-reference the datasheet revision C specifications against your system requirements before finalizing procurement.

Selection Notes

Select this part for applications requiring high precision dual references with significant load currents. The A-grade specification ensures tighter accuracy bounds compared to B-grade alternatives. Consider the separate supply pins if power isolation between reference and buffer stages is necessary. Evaluate the thermal management requirements given the exposed pad design in the MSOP package for optimal heat dissipation.

Part Context

This component belongs to the LT6658 family of Refulator devices, which merge voltage reference and linear regulator functions. The AHMSE-2.5 variant specifically denotes the 2.5V output option housed in a 16-lead MSOP package with extended temperature capabilities. It serves as a critical power management element in high-resolution signal chains where stability and low noise are paramount.

Replacement Considerations

LT6658BHMSSE-2.5#PBF offers similar functionality with B-grade specifications (±0.1% accuracy, 20ppm/°C drift). LT6658AIMSE-2.5#PBF provides A-grade performance but is limited to the I-grade temperature range (-40°C to 85°C). Verify pin compatibility and thermal characteristics when substituting.