LT6657AHMS8-3#PBF

Voltage Reference Overview

The LT6657AHMS8-3#PBF is a precision buffered voltage reference with a fixed 3V output. It features an initial accuracy of ±0.1% and a maximum temperature coefficient of 1.5ppm/°C (A Grade). The device operates within a supply range from VOUT + 50mV to 40V, supporting a minimum source/sink current of 10mA. Key electrical parameters include line regulation of 0.2ppm/V, load regulation of 2µV/mA, and low-frequency noise of 0.5ppm P-P (0.1Hz to 10Hz). It is specified for operation between –40°C and 125°C in an 8-lead MSOP package.

Voltage Reference Feature Summary

• Advanced curvature compensation technology ensures predictable temperature behavior and extremely low drift.
• Buffered output stage provides high drive capability with precise load regulation and low output impedance.
• Capable of sourcing and sinking equal currents, allowing configuration as a negative voltage reference.
• Integrated reverse battery protection, short-circuit current limiting, and thermal shutdown for robust operation.

Voltage Reference Applications

• High resolution data acquisition systems
• Instrumentation and process control
• Automotive control and monitoring
• Medical equipment

Voltage Reference Procurement Notes

Verify the specific grade suffix 'A' corresponds to the required 1.5ppm/°C drift specification. Confirm the '#PBF' suffix indicates RoHS compliance. Ensure the MSOP-8 package footprint matches the design layout. Check availability status as distribution may vary by region.

Voltage Reference Selection Notes

Select this component when low drift and low noise are critical for signal integrity. The A-grade version is suitable for applications requiring tighter temperature stability than the B-grade. Consider the 10mA drive capability for direct interfacing with ADCs or DACs without additional buffering.

Voltage Reference Part Context

This part belongs to the LT6657 family of precision voltage references. It shares the same core architecture and performance characteristics as other variants in the series, differing primarily in output voltage options and temperature coefficient grades. The family utilizes advanced bandgap curvature compensation techniques.

Voltage Reference Replacement Considerations

LT6657BHMS8-3#PBF

Voltage Reference FAQ

Can the LT6657AHMS8-3#PBF operate as a negative voltage reference?

Yes, the device can be configured as a negative voltage reference due to its high sink current capability, maintaining the same precision as positive reference operation.

What is the minimum input-to-output voltage differential required?

The device requires a minimum dropout voltage of 50mV above the output voltage for standard operation.