LT6658BIDE-1.2#PBF

Overview

The LT6658BIDE-1.2#PBF is a precision dual output voltage reference from Analog Devices, housed in a 16-lead (4mm × 3mm) plastic DFN package with an exposed thermal pad. It provides a fixed 1.2V output with an initial accuracy of ±0.1% and a maximum temperature coefficient of 20ppm/°C. The device operates within a junction temperature range of –40°C to 85°C and supports input voltages up to 36V. Output 1 delivers up to 150mA sourcing current, while Output 2 provides up to 50mA. Both outputs feature Kelvin sense connections for high load regulation.

Feature Summary

• Dual independent outputs with identical precision specifications that track each other over temperature and load variations.
• Kelvin sense connection on outputs ensures high load regulation performance under heavy loading conditions.
• Separate supply pins allow isolation of buffer amplifiers to reduce power consumption.
• Integrated thermal shutdown and short circuit protection prevent thermal overstress.

Applications

• Driving precision reference inputs of high resolution ADCs and DACs
• Powering microcontrollers and supporting circuitry simultaneously
• Data acquisition systems requiring stable reference supplies
• Automotive control and monitoring applications

Procurement Notes

Verify the specific suffix #PBF indicates RoHS compliance when ordering. Confirm the B-grade designation matches the required 0.1% accuracy and 20ppm/°C drift specifications for your application. Ensure the DFN package footprint aligns with your PCB layout requirements before procurement.

Selection Notes

Select this component when dual isolated references are needed with high current capability. The B-grade offers standard precision suitable for general instrumentation. Consider the A-grade if tighter accuracy is required, or H-grade for extended temperature ranges. Verify input voltage headroom meets dropout requirements at maximum load currents.

Part Context

This part belongs to the LT6658 family of Refulator devices combining voltage reference and linear regulator performance. It is available in MSOP and DFN packages with various voltage options including 1.2V, 1.8V, 2.5V, 3V, 3.3V, and 5V. The family supports both industrial and automotive temperature grades.

Replacement Considerations

LT6658AIMSE-1.2#PBF offers improved accuracy and drift specifications in the same package. LT6658AHDE-1.2#PBF provides extended temperature range capability. Cross-package replacements require PCB layout modifications due to different pinouts and thermal characteristics.