LT6650IS5#TRPBF

Voltage Reference Overview

The LT6650IS5#TRPBF is a micropower, low voltage 400mV reference with an integrated rail-to-rail buffer amplifier in a 5-lead SOT-23 package. It operates from supply voltages between 1.4V and 18V, drawing only 5.6µA typical supply current. The device provides ±1% maximum accuracy over the -40°C to 85°C temperature range. It features externally adjustable output voltage scaling up to the supply potential using two resistors. The output can source or sink 200µA and remains stable with any load capacitor of 1µF or higher.

Voltage Reference Feature Summary

• Micropower operation with 5.6µA typical supply current
• Integrated rail-to-rail buffer amplifier for external voltage scaling
• Postpackage-trimmed for high initial accuracy
• Capable of sourcing and sinking 200µA output current

Voltage Reference Applications

• Battery-operated systems
• Handheld instruments
• Industrial control systems
• Data acquisition systems
• Negative voltage references

Voltage Reference Procurement Notes

Verify the specific IS5 suffix indicates the industrial temperature grade (-40°C to 85°C) rather than commercial or extended grades. Confirm the #TRPBF designation ensures lead-free compliance and tape-and-reel packaging format. Cross-reference the manufacturer part number against official Analog Devices documentation to ensure authenticity and correct revision level before procurement.

Voltage Reference Selection Notes

Select this component when a sub-volt reference is required in a compact surface-mount footprint. It is suitable for applications needing a wide input voltage range down to 1.4V. Ensure the design accommodates the minimum 1µF output capacitance requirement for stability. Consider the 30ppm/°C temperature coefficient if precision drift limits are critical for the target application environment.

Voltage Reference Part Context

This part belongs to the LT6650 series of micropower voltage references. It is distinguished by its unique 400mV internal reference node which allows for flexible output scaling via the feedback pin. The IS5 variant specifically denotes the industrial temperature range specification within the broader family that includes commercial and extended temperature options.

Voltage Reference Replacement Considerations

LT6650CS5#TRPBF

Voltage Reference FAQ

How is the output voltage adjusted above 400mV?

The output voltage is scaled using two external resistors connected to the FB pin. The resistor values determine the gain of the internal buffer amplifier, allowing the output to be set anywhere from 400mV up to nearly the supply voltage.

What is the minimum required output capacitance?

The device requires a total load capacitance of 1µF or higher to ensure stability. Higher capacitance improves load transient response.