LTC6652BHMS8-1.25#TRPBF

Overview

The Analog Devices LTC6652BHMS8-1.25#TRPBF is a precision buffered voltage reference delivering a fixed 1.25V output in an 8-lead MSOP package. It features B-grade accuracy with ±0.1% initial tolerance and a maximum temperature coefficient of 10ppm/°C. The device operates from a supply voltage range of 2.7V to 13.2V, consuming 350µA to 560µA. It provides ±5mA source/sink current capability and includes a low-power shutdown mode drawing less than 2µA.

Feature Summary

• High-order curvature compensation ensures predictable temperature characteristics across the full operating range.
• Capable of sourcing and sinking significant load currents without requiring external buffering components.
• Operates stably with or without an optional output capacitor, simplifying board layout constraints.

Applications

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

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging rather than tube. Confirm the B-grade designation matches the required ±0.1% accuracy and 10ppm/°C drift specifications for your design. Ensure the manufacturer is identified as Analog Devices Inc., formerly Linear Technology.

Selection Notes

Select this component when a fixed 1.25V reference is required with moderate precision (B-grade). It is suitable for applications where space is limited due to the compact MSOP package. Consider the A-grade variant if tighter ±0.05% accuracy and lower 5ppm/°C drift are necessary.

Part Context

This part belongs to the LTC6652 family of precision, low-drift, low-noise references. The family is fully specified over a –40°C to 125°C temperature range. Other options include different output voltages and hermetic LS8 packages for enhanced stability.

Replacement Considerations

LTC6652AHMS8-1.25#TRPBF offers higher A-grade accuracy and lower drift. LT6657 series devices provide superior noise performance but differ in input voltage ranges and pin configurations.

FAQ

Is an output capacitor required for stability?

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

How does the shutdown mode function?

Tying the SHDN pin low powers down the device to less than 2µA. In this state, the output impedance increases significantly.