LT6658BIDE-1.8#TRPBF

Voltage Reference Overview

The LT6658BIDE-1.8#TRPBF is a precision dual output voltage reference from Analog Devices, featuring a fixed 1.8V output in a 16-lead DFN package. It operates within an industrial temperature range of -40°C to 85°C with B-grade specifications: ±0.1% initial accuracy and 20ppm/°C maximum temperature coefficient. Output 1 supports up to 150mA sourcing current, while Output 2 provides up to 50mA. The device accepts input voltages up to 36V and includes thermal shutdown protection.

Voltage Reference Feature Summary

• Combines precision voltage reference performance with linear regulator capabilities for high-current driving
• Features Kelvin sense connections on outputs to achieve extremely low load regulation
• Includes separate supply pins for each output to allow power consumption reduction and buffer isolation
• Offers a noise reduction pin to band-limit and lower total integrated output noise

Voltage Reference Applications

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

Voltage Reference Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when ordering. Confirm that the B-grade designation corresponds to the required ±0.1% accuracy and 20ppm/°C drift limits for your application. Ensure the DFN package footprint matches your PCB design, specifically accounting for the exposed ground pad requirements.

Voltage Reference Selection Notes

Select this component when dual isolated outputs are needed from a single reference source. The B-grade offers cost-effective precision compared to A-grade options. Consider the 150mA capability of Output 1 for powering primary circuitry while using Output 2 for sensitive analog inputs. Verify input voltage headroom requirements against the dropout characteristics.

Voltage Reference Part Context

This part belongs to the LT6658 family of Refulators, which merge reference and regulator functions. Other variants include MSOP packages and different voltage options like 1.2V, 2.5V, and 5V. Higher grade A-temperature versions (AH/BH) extend operation to 125°C. The DFN package provides thermal management via an exposed pad.

Voltage Reference Replacement Considerations

LT6658BIDE-1.8#PBF (Tube version)

Voltage Reference FAQ

What is the difference between Output 1 and Output 2 current capabilities?

Output 1 can source up to 150mA and sink 20mA, whereas Output 2 is limited to sourcing 50mA and sinking 20mA.

How does the OD pin function?

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