LT6658AIMSE-1.2#TRPBF

Overview

The LT6658AIMSE-1.2#TRPBF is a precision dual output voltage reference from Analog Devices, packaged in a 16-lead MSOP with an exposed pad. It provides a fixed nominal output voltage of 1.2V with an initial accuracy of ±0.05% and a maximum temperature coefficient of 10ppm/°C. The device operates within a junction temperature range of -40°C to +85°C and accepts input voltages up to 36V. Output 1 supports sourcing currents up to 150mA and sinking up to 20mA, while Output 2 supports sourcing up to 50mA and sinking up to 20mA. Supply current is typically 2.0mA at no load.

Feature Summary

• Combines the performance of a precision voltage reference and a linear regulator for high-current driving capability.
• Features two independent outputs that track each other over temperature and load variations.
• Includes Kelvin sense connections on outputs to minimize load regulation error.
• Offers separate supply pins for each output to allow power consumption reduction and buffer isolation.

Applications

• Driving precision reference inputs of high-resolution ADCs and DACs under heavy loading
• Powering microcontrollers and supporting circuitry simultaneously with analog references
• Dual output tracking reference systems requiring matched voltage rails

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 for your application. Ensure the MSOP-16 package footprint aligns with your PCB layout constraints. Check for RoHS compliance status if required by your manufacturing standards.

Selection Notes

Select this part when dual, tightly tracked voltage rails are needed for mixed-signal systems. The A-grade offers tighter accuracy than B-grade options. Consider the exposed pad thermal requirements for the MSOP package. Verify input voltage headroom meets dropout requirements for both outputs under maximum load conditions.

Part Context

This component belongs to the LT6658 family of Refulator devices, which merge reference and regulator functions. Other variants include different output voltages (1.8V, 2.5V, etc.) and grades (B-grade, H-grade). Package options include DFN-16. The TRPBF suffix denotes tape and reel packaging for automated assembly.

Replacement Considerations

LT6658AIMSE-1.2#PBF (Tube version)

FAQ

Can the output voltage be adjusted?

Yes, each output can be configured with external resistors to provide an output voltage up to 6V.

What is the purpose of the OD pin?

The OD pin allows for shutdown control. Driving it low disables the outputs to reduce power consumption.