LT6658BHDE-1.2#TRPBF

Overview

The LT6658BHDE-1.2#TRPBF is a precision dual output voltage reference in a 16-lead DFN package, featuring a fixed 1.2V output with ±0.1% initial accuracy and a maximum temperature coefficient of 20ppm/°C. It operates within a specified junction temperature range of –40°C to 125°C. The device provides Output 1 sourcing up to 150mA and Output 2 sourcing up to 50mA. It supports input voltages up to 36V and includes thermal shutdown protection.

Feature Summary

• Dual outputs track each other over temperature and load while maintaining identical precision specifications
• Kelvin sense connections enable high current drive capability with minimal load regulation error
• Separate supply pins allow independent power management and buffer amplifier isolation

Applications

• Microcontroller or FPGA systems with integrated ADC/DAC components
• High-resolution data acquisition systems requiring stable reference inputs
• Automotive control and monitoring circuits demanding wide temperature stability

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when ordering. Confirm the DE package designation matches the required 16-lead DFN footprint for PCB layout compatibility. Ensure the B-grade performance parameters align with system accuracy requirements before finalizing procurement.

Selection Notes

Select this component when dual isolated references are needed for simultaneous ADC and microcontroller powering. The B-grade offers cost-effective precision compared to A-grade options. Verify that the 1.2V fixed output meets design needs, as external resistors can adjust voltage up to 6V if necessary.

Part Context

This part belongs to the LT6658 family of Refulator devices combining voltage reference and linear regulator performance. The BHDE variant specifically denotes the H-grade temperature rating and DFN package type. It serves as a high-current alternative to standard low-power references in complex mixed-signal designs.

Replacement Considerations

LT6658BIDE-1.2#TRPBF (MSOP Package)

FAQ

How does the Kelvin sense connection improve performance?

It minimizes load regulation errors by sensing voltage directly at the output pin, compensating for trace resistance during high current sourcing.

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

They allow independent supply connections for each output buffer, enabling reduced power consumption and improved noise isolation between channels.