LTC6652BHLS8-5#PBF

Overview

The Analog Devices LTC6652BHLS8-5#PBF is a precision buffered voltage reference delivering a fixed 5V output. It utilizes high-order curvature compensation to achieve low drift and exceptional stability over the –40°C to 125°C operating range. The device features an initial accuracy of ±0.1% and a maximum temperature coefficient of 8ppm/°C. It operates from supply voltages up to 13.2V with a minimum dropout of 300mV. Key electrical parameters include a typical noise of 3ppm P-P (0.1Hz to 10Hz), shutdown current below 2µA, and source/sink capability of ±5mA.

Feature Summary

• High-order curvature compensation ensures predictable temperature characteristics and minimal drift across wide thermal ranges.
• Hermetic 5mm × 5mm LS8 package provides outstanding long-term stability and immunity to humidity-induced stress shifts.
• Integrated buffer amplifier enables robust load regulation with both sourcing and sinking current capabilities.
• Active-low shutdown mode significantly reduces power consumption when the reference is not in use.

Applications

• Automotive control and monitoring systems
• High-resolution data acquisition systems
• Precision regulators and instrumentation
• Medical equipment requiring stable references

Procurement Notes

Verify the specific ordering suffix to confirm the LS8 hermetic ceramic package variant. Ensure the B-grade specification aligns with the required ±0.1% accuracy and 8ppm/°C drift limits for your design. Confirm that the 5V output option matches the system requirements. Check for any recent product change notifications regarding manufacturing updates.

Selection Notes

Select this component when superior long-term stability and humidity resistance are critical compared to standard plastic packages. The LS8 package is ideal for harsh environments where mechanical stress or moisture could affect performance. Consider the higher cost relative to MSOP variants against the benefits of hermetic sealing and reduced hysteresis for high-reliability applications.

Part Context

This part belongs to the LTC6652 family of precision low-drift references. While other members utilize plastic MSOP packaging, the LS8 designation indicates a leadless chip carrier format. This hermetic construction distinguishes it within the series by offering enhanced environmental protection and lower thermal hysteresis for demanding industrial and automotive uses.

Replacement Considerations

LTC6652AHLS8-5#PBF offers A-grade specifications with tighter accuracy and drift limits. LTC6652BHMS8-5#PBF provides the same electrical performance but in a plastic MSOP package, which may have different thermal and humidity characteristics.

FAQ

Does the LS8 package require an external output capacitor?

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 LS8 package compare to MS8 regarding humidity sensitivity?

The LS8 package is hermetic and immune to humidity-induced pressure changes on the die, whereas plastic MSOP packages may experience slight output shifts due to moisture absorption.