LTC6655LNBHMS8-4.096#PBF

Overview

The Analog Devices LTC6655LNBHMS8-4.096#PBF is a precision bandgap voltage reference providing a fixed 4.096V output with ±0.025% initial accuracy and a maximum temperature coefficient of 2ppm/°C. It features low noise performance, specified at 0.12ppm peak-to-peak (0.1Hz to 10Hz) and 0.21ppm RMS (10Hz to 1kHz) when utilizing the dedicated noise reduction pin with a 100µF capacitor. The device operates from an input voltage range of VOUT + 0.5V up to 13.2V, supports sourcing and sinking currents of ±5mA, and includes a shutdown mode consuming less than 20µA. It is housed in an 8-lead MSOP package.

Feature Summary

• Features a dedicated noise reduction pin that enables significant wideband noise suppression through the addition of a single external capacitor.
• Provides high accuracy with advanced curvature compensation, eliminating or reducing the need for system calibration.
• Capable of both sourcing and sinking load current while maintaining superior line rejection and load regulation.
• Includes a low-power shutdown mode for applications requiring minimal standby current consumption.

Applications

• Instrumentation and test equipment
• 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 'LN' designation matches the required low-noise specification. Ensure the 4.096V output voltage aligns with the target application requirements before procurement.

Selection Notes

Select this component for designs requiring exceptional low-frequency noise performance and long-term stability. The LN variant is specifically optimized for noise-sensitive environments compared to standard versions. Verify that the MSOP package footprint fits the PCB layout constraints.

Part Context

This part belongs to the LTC6655 family of precision references designed for demanding automotive and industrial applications. It offers predictable temperature characteristics and is fully specified over the –40°C to 125°C operating range. The family ensures consistent performance across various output voltage options.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.

FAQ

How is the low noise performance achieved?

The LTC6655LN version includes a Noise Reduction (NR) pin. Connecting a capacitor between this pin and ground reduces wideband noise, achieving specifications of 0.12ppm P-P and 0.21ppm RMS with a 100µF capacitor.

What is the minimum dropout voltage?

The device requires a minimum input voltage of VOUT + 0.5V to maintain regulation while sourcing current.