LTC6652AHMS8-5#PBF

Overview

The Analog Devices LTC6652AHMS8-5#PBF is a precision buffered voltage reference providing a fixed 5V output. It features an initial accuracy of ±0.05% and a maximum temperature coefficient of 5ppm/°C. The device operates within a supply range of 2.7V to 13.2V, with a minimum dropout of 300mV. It supports sourcing and sinking currents up to ±5mA and includes a low-power shutdown mode consuming less than 2µA. Packaged in an 8-lead MSOP, it is fully specified over the –40°C to 125°C temperature range.

Feature Summary

• High-order curvature compensation ensures predictable temperature characteristics and low drift.
• Integrated buffer amplifier provides excellent load regulation and source/sink capability.
• Low noise performance minimizes signal interference in sensitive circuits.
• Active low shutdown pin enables significant power reduction when the reference is inactive.

Applications

• Automotive control and monitoring systems
• High-resolution data acquisition systems
• Precision regulators
• Medical equipment

Procurement Notes

Verify the specific suffix #PBF indicates lead-free finish and standard tube packaging. Confirm the 'A' grade designation matches the required ±0.05% accuracy and 5ppm/°C drift specifications for your application. Ensure the MSOP package dimensions align with your PCB layout constraints.

Selection Notes

Select this component when high stability and low noise are critical. The A-grade specification offers tighter tolerance compared to B-grade options. Consider the 300mV dropout requirement relative to your input supply voltage. Evaluate the need for external capacitors based on load conditions and stability requirements.

Part Context

This part belongs to the LTC6652 family of precision references, which also includes variants with different output voltages and packages such as the hermetic LS8. The MSOP package provides a compact surface-mount solution suitable for space-constrained designs requiring automotive or industrial reliability.

Replacement Considerations

LTC6652BHMS8-5#PBF (B-Grade, 10ppm/°C, ±0.1% accuracy).

FAQ

Is an external output capacitor required for stability?

No, the LTC6652 is stable without an output capacitor. However, adding a capacitor between 0.1µF and 10µF can be beneficial for specific load conditions or to reduce transient noise.

How does the shutdown mode affect the output voltage?

When the SHDN pin is tied low, the device enters a low-power state. The output impedance becomes approximately 20kΩ multiplied by the rated output voltage.