LT6658BIMSE-1.2#TRPBF

Overview

The LT6658BIMSE-1.2#TRPBF is a precision dual output voltage reference from Analog Devices, featuring a fixed 1.2V output with ±0.1% initial accuracy and a maximum temperature coefficient of 20ppm/°C. It operates within an industrial temperature range of -40°C to +85°C and utilizes a 16-lead MSOP package in tape and reel format. The device integrates high current capability, supporting up to 150mA sourcing on Output 1 and 50mA on Output 2, while maintaining low noise performance of 1.0ppm peak-to-peak between 0.1Hz and 10Hz.

Feature Summary

• Combines precision voltage reference and linear regulator performance for simultaneous high-resolution ADC/DAC driving and microcontroller powering
• Features separate supply pins for each output to reduce power consumption and isolate buffer amplifiers
• Includes Kelvin sense connections on outputs for exceptional load regulation and thermal shutdown protection

Applications

• Dual output tracking reference systems
• Microcontroller or FPGA applications with integrated ADC/DAC
• Data acquisition systems requiring stable reference inputs
• Precision low noise regulators

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when ordering. Confirm the B-grade designation matches the required 20ppm/°C temperature coefficient and ±0.1% accuracy specifications. Ensure the 16-lead MSOP package form factor aligns with the target PCB layout constraints before finalizing procurement.

Selection Notes

Select this component when dual independent outputs are required for sensitive analog circuits. The B-grade offers a balance of cost and performance suitable for general industrial applications. Consider the A-grade if tighter 10ppm/°C drift is necessary, or the H-grade for extended temperature ranges up to 125°C.

Part Context

This part belongs to the LT6658 family of Refulator devices, which merge reference and regulator functions. The IMSE suffix denotes the industrial grade (-40°C to 85°C) in a plastic MSOP package. The 1.2V option provides a lower voltage headroom compared to standard 2.5V references, suitable for low-voltage logic interfaces.

Replacement Considerations

LT6658AIMSE-1.2#TRPBF (A-grade, tighter specs)

FAQ

Can the output voltage be adjusted?

Yes, although the base device is fixed at 1.2V, the datasheet notes that both outputs can be configured with external resistors to give an output voltage up to 6V.

What is the purpose of the OD pin?

The OD (Output Disable) pin allows the user to shut down the device to reduce power consumption. Logic high enables operation, while logic low disables it.