LTC6655CHMS8-1.25#TRPBF

Overview

The LTC6655CHMS8-1.25#TRPBF is a precision bandgap voltage reference from Analog Devices, offering an output of 1.25V with ±0.05% initial accuracy and a maximum temperature coefficient of 5ppm/°C. It operates within a supply range of 3V to 13.2V, drawing 7.5mA typical supply current. The device features low dropout capability of 500mV, shutdown mode consuming less than 20µA, and bidirectional load regulation supporting ±5mA source/sink currents. Packaged in an 8-lead MSOP, it is fully specified over the -40°C to 125°C industrial temperature range.

Feature Summary

• Advanced curvature compensation ensures predictable temperature characteristics and high accuracy, reducing or eliminating calibration requirements.
• Superior load regulation with both sourcing and sinking capabilities maintains consistent performance across wide operating conditions.
• Integrated shutdown mode enables significant power reduction for low-power applications while maintaining fast turn-on response.

Applications

• Instrumentation and test equipment requiring high-resolution measurements
• High resolution data acquisition systems
• Precision battery monitors
• Medical equipment

Procurement Notes

Verify the specific 'C' grade suffix corresponds to the required ±0.05% accuracy and 5ppm/°C drift specifications against your design needs. Confirm the MSOP package and tape-and-reel packaging align with your assembly process. Ensure input voltage remains within the 3V to 13.2V range to maintain specified line regulation and stability parameters.

Selection Notes

Select this part when moderate accuracy (±0.05%) and drift (5ppm/°C) are sufficient, offering a cost-effective alternative to the higher-grade 'B' series. Consider the 1.25V output option if compatible with downstream ADC or DAC reference inputs. Evaluate the need for shutdown functionality to manage system power consumption during idle periods.

Part Context

This component belongs to the LTC6655 family of precision voltage references, designed for demanding automotive and industrial environments. The family includes various output voltages and packages, such as the hermetic LS8. The CHMS8 variant specifically denotes the plastic MSOP package with C-grade performance metrics, balancing precision with standard surface-mount manufacturing compatibility.

Replacement Considerations

LTC6655BHMS8-1.25#TRPBF offers tighter accuracy (±0.025%) and lower drift (2ppm/°C). LTC6655LNCHMS8-1.25#TRPBF provides enhanced low-noise performance via a dedicated noise reduction pin.