LT6658AIMSE-3.3#TRPBF

Overview

The LT6658AIMSE-3.3#TRPBF is a precision dual output voltage reference from Analog Devices, operating within the -40°C to +85°C temperature range. It provides a fixed 3.3V output with an initial accuracy of ±0.05% and a maximum temperature coefficient of 10ppm/°C. The device supports up to 36V input voltage and features separate supply pins for each output. Output 1 delivers up to 150mA sourcing current, while Output 2 provides up to 50mA sourcing current. Both outputs track each other over temperature and load variations.

Feature Summary

• Combines precision voltage reference performance with linear regulator capabilities
• Features Kelvin sense connections for high load regulation accuracy
• Includes dedicated noise reduction pin for band-limiting integrated noise
• Provides thermal shutdown protection against thermal overstress

Applications

• Microcontroller or FPGA systems with ADC/DAC interfaces
• Dual output tracking reference circuits
• Precision low noise regulators
• Data acquisition systems
• Automotive control and monitoring applications

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when ordering. Confirm the A-grade designation matches the required 0.05% accuracy and 10ppm/°C drift specifications. Ensure the MSOP-16 package variant aligns with PCB footprint requirements. Cross-reference the manufacturer part number directly with official Analog Devices documentation to confirm availability status.

Selection Notes

Select this component when simultaneous high-current drive and ultra-low drift are required for sensitive analog front ends. The dual independent supply inputs allow isolation between buffer amplifiers to minimize cross-talk. Consider the exposed pad requirement for thermal management during high-load operations. Verify that the 3.3V fixed output meets system requirements without external resistor adjustment.

Part Context

This part belongs to the LT6658 family of Refulator devices, which merge reference and regulator functions. The 'A' grade denotes tighter electrical tolerances compared to B-grade alternatives. The MSE16 package offers a compact surface-mount solution suitable for space-constrained designs requiring high precision power management.

Replacement Considerations

LT6658BIMSE-3.3#TRPBF (B-grade, lower accuracy)

FAQ

How does the LT6658 handle heavy loading on its reference inputs?

Both outputs are designed to drive high-resolution ADC and DAC reference inputs even under heavy loading conditions, maintaining precision due to the integrated linear regulator architecture.

What is the function of the separate VIN1 and VIN2 pins?

Separate supply pins provide an option to reduce overall power consumption and isolate the buffer amplifiers associated with each output channel.