LTC6655LNCHMS8-2.5#PBF

Overview

The LTC6655LNCHMS8-2.5#PBF is a precision bandgap voltage reference featuring low noise and drift, housed in an 8-lead plastic MSOP package. It provides a fixed output voltage of 2.5V with an initial accuracy of ±0.025% and a maximum temperature coefficient of 2ppm/°C. The device operates within a supply voltage range of 3V to 13.2V, drawing a typical supply current of 7.5mA. It includes a dedicated noise reduction pin for bandwidth limiting and supports a shutdown mode consuming less than 20µA.

Feature Summary

• Features a dedicated noise reduction pin that enables wideband noise reduction through the addition of a single external capacitor.
• Provides high accuracy with an initial tolerance of ±0.025% and advanced curvature compensation for predictable temperature characteristics.
• Supports both sourcing and sinking currents up to ±5mA with superior load regulation and line rejection capabilities.

Applications

• Instrumentation and test equipment requiring high resolution measurements
• High resolution data acquisition systems
• Precision battery monitors

Procurement Notes

Verify the specific ordering suffix #PBF indicates tube packaging rather than tape and reel. Confirm the 'C' grade designation corresponds to the required ±0.025% accuracy specification. Ensure the MSOP package type matches the target PCB footprint requirements before finalizing procurement orders.

Selection Notes

Select this component when low noise performance is critical, utilizing the NR pin for further filtering. Compare against standard LTC6655 variants if noise reduction features are unnecessary. Verify that the 2.5V output aligns with system requirements and that the MSOP package fits the available board space constraints.

Part Context

This part belongs to the LTC6655 family of precision references, specifically the LN variant designed for low noise applications. It shares the core architecture with other grades but adds the noise reduction capability. The 'C' suffix denotes the higher accuracy tier compared to the 'B' grade options within the same package style.

Replacement Considerations

LTC6655BHMS8-2.5#PBF

FAQ

How does the noise reduction pin function?

Connecting a capacitor between the NR pin and ground band-limits the noise, reducing wideband noise performance.

What is the minimum operating voltage for this device?

The device requires a minimum supply voltage of 3V when sourcing current or 2.7V under specific conditions, with a maximum of 13.2V.