LTC6652AHMS8-3#TRPBF

Overview

The LTC6652AHMS8-3#TRPBF is a precision buffered voltage reference delivering a fixed 3V output. It features an initial accuracy of ±0.05% and a maximum temperature coefficient of 5ppm/°C across the –40°C to 125°C range. The device operates with a supply voltage up to 13.2V, requiring a minimum dropout of 300mV. Key electrical specifications include a low noise density of 2.1ppm P-P (0.1Hz to 10Hz), ±5mA source/sink current capability, and a shutdown mode consuming less than 2µA. It is housed in an 8-lead MSOP package.

Feature Summary

• High-order curvature compensation ensures predictable temperature characteristics and minimal drift over wide operating ranges.
• Integrated buffer provides strong load regulation and bidirectional current sourcing and sinking capabilities.
• Shutdown functionality significantly reduces power consumption when the reference is inactive.
• Operational stability is maintained without mandatory external load capacitors, though optional capacitance is supported.

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRPBF confirms tape and reel packaging for automated assembly. Confirm the A-grade designation matches required accuracy and drift specifications. Ensure the manufacturer is Analog Devices Inc. or Linear Technology. Validate RoHS compliance status if environmental regulations apply to the target deployment.

Selection Notes

Select this component when a fixed 3V output is required alongside high precision and low noise performance. The A-grade specification is suitable for applications demanding tight initial accuracy limits. Consider the MSOP package dimensions against available board space. Evaluate thermal dissipation requirements if operating near maximum input voltages or load currents.

Part Context

This part belongs to the LTC6652 family of precision, low drift, low noise buffered references. The family includes various output voltage options and grade variations. The MS8 package variant offers a compact surface-mount solution suitable for space-constrained designs requiring stable reference voltages in industrial environments.

Replacement Considerations

LTC6652AHMS8-3#PBF: Identical electrical specifications and function; differs only in tray packaging instead of tape and reel.

FAQ

Is an external output capacitor required for stability?

No, the LTC6652 is stable with or without an output capacitor. Capacitors between 0.1µF and 10µF are optional and may be beneficial depending on specific load conditions.

How does the shutdown pin affect the output voltage?

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