LTC6652AHMS8-4.096#PBF

Overview

The LTC6652AHMS8-4.096#PBF is a precision buffered voltage reference delivering a fixed 4.096V output with ±0.05% initial accuracy and a maximum temperature coefficient of 5ppm/°C. It operates within a supply range of 2.7V to 13.2V, consuming 350µA typical current. The device features low noise (2.1ppm P-P from 0.1Hz to 10Hz), ±5mA source/sink capability, and a shutdown mode drawing less than 2µA. Packaged in an 8-lead MSOP, it functions reliably across a –40°C to 125°C temperature range.

Feature Summary

• High-order curvature compensation ensures predictable temperature characteristics and ultra-low drift.
• Capable of sourcing and sinking up to 5mA without requiring an external load capacitor.
• Includes a low-power shutdown mode that reduces consumption below 2µA when inactive.

Applications

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

Procurement Notes

Verify the specific A-grade performance parameters against the official datasheet specifications before integration. Confirm the 8-lead MSOP package dimensions match your PCB footprint requirements. Ensure the input voltage remains within the 13.2V absolute maximum rating during operation.

Selection Notes

Select this component for applications demanding high stability over wide temperature ranges. The A-grade specification provides tighter accuracy limits compared to B-grade alternatives. Consider the low dropout requirement of 300mV when designing the power supply architecture.

Part Context

This part belongs to the LTC6652 family of precision references, which includes various output voltages and grade options. The AHMS8 suffix indicates the A-grade accuracy level and the 8-lead plastic MSOP surface-mount package configuration suitable for space-constrained designs.

Replacement Considerations

LTC6652BHMS8-4.096#PBF offers identical functionality with relaxed B-grade accuracy and drift specifications.

FAQ

Is an output capacitor required for stable operation?

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

How does the shutdown pin function?

Tying the SHDN pin low powers down the device to less than 2µA. For normal operation, the pin should be tied to VIN or driven high.