LT6658AHMSE-3#TRPBF

Overview

The LT6658AHMSE-3#TRPBF is a precision dual output voltage reference from Analog Devices, operating at a nominal 3V output. It features an A-grade initial accuracy of ±0.05% and a maximum temperature coefficient of 10ppm/°C. The device provides Output 1 with up to 150mA sourcing capability and Output 2 with up to 50mA sourcing. It operates within a specified junction temperature range of -40°C to 125°C and utilizes a 16-lead MSOP package.

Feature Summary

• Combines the performance of a precision voltage reference and a linear regulator for driving high-resolution ADCs and DACs under heavy loading.
• Features separate supply pins for each output to reduce power consumption and isolate buffer amplifiers.
• Includes Kelvin sense connections on outputs to achieve low load regulation and minimize error caused by trace resistance.

Applications

• Microcontroller or FPGA systems with integrated ADC/DAC
• Data acquisition systems requiring stable reference voltages
• Automotive control and monitoring circuits
• Precision instrumentation and process control equipment

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when ordering. Confirm that the AH designation corresponds to the H-grade extended temperature range (-40°C to 125°C) required for your application environment. Ensure compatibility with the 16-lead MSOP footprint during PCB layout.

Selection Notes

Select this component when dual isolated outputs are needed for simultaneous powering of microcontrollers and reference inputs of converters. The H-grade variant is suitable for environments exceeding standard industrial temperatures. Consider the separate VIN1/VIN2 pins if independent power domain isolation is necessary to minimize noise coupling between outputs.

Part Context

This part belongs to the LT6658 family of Refulators, which merge reference and regulator functions. The 'A' grade denotes tighter initial accuracy specifications compared to B-grade parts. The 'H' suffix specifies the extended high-temperature operational range, distinguishing it from the standard I-grade variants limited to 85°C.

Replacement Considerations

LT6658AIMSE-3#TRPBF (I-grade, -40°C to 85°C)

FAQ

Can the output voltage be adjusted?

Yes, each output can be configured with external resistors to provide an adjustable 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 when the reference is not in use.