LTC6652AHMS8-5#TRPBF

Overview

The LTC6652AHMS8-5#TRPBF is a precision buffered voltage reference with a fixed 5V output, housed in an 8-lead MSOP package. It features A-grade initial accuracy of ±0.05% and a maximum temperature coefficient of 5ppm/°C. The device operates over a –40°C to 125°C range with a supply voltage up to 13.2V. Key electrical parameters include a low noise of 2.1ppm P-P (0.1Hz to 10Hz), ±5mA source/sink current capability, and a shutdown current under 2µA.

Feature Summary

• High-order curvature compensation ensures predictable temperature characteristics and minimal drift.
• Integrated buffer provides excellent load regulation and high drive capability for sourcing and sinking current.
• Low power shutdown mode significantly reduces consumption when the reference is inactive.
• Stable operation without requiring an external output capacitor.

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRPBF confirms tape and reel packaging rather than tube. Confirm the 'A' grade designation matches the required ±0.05% accuracy and 5ppm/°C drift specifications. Ensure the manufacturer is Analog Devices or Linear Technology as specified in official documentation.

Selection Notes

Select this component for applications demanding high stability and low noise in a compact surface-mount form factor. The 5V output suits standard logic levels and ADC references. Consider the thermal resistance of the MSOP package if operating near maximum input voltages with significant load currents.

Part Context

This part belongs to the LTC6652 family of precision, low drift, low noise buffered references. The family includes variants with different output voltages and grades (A and B). The MS8 package offers a compact solution compared to hermetic LS8 options while maintaining robust performance across wide temperature ranges.

Replacement Considerations

LTC6652BHMS8-5#TRPBF: Offers lower accuracy (±0.1%) and higher drift (10ppm/°C) but shares the same package and pinout.

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.

How does the shutdown mode affect the output?

Tying the SHDN pin low powers down the device to less than 2µA. In this state, the output impedance becomes approximately 20kΩ multiplied by the rated output voltage.