MCP1501T-18E/RW

Overview

The MCP1501T-18E/RW is a buffered voltage reference from Microchip Technology offering an output of 1.8V with 0.1% initial accuracy and a maximum temperature coefficient of 50 ppm/°C across the -40°C to +125°C range. It operates on a supply voltage between 2.0V and 5.5V, drawing a typical current of 140 μA. The device features a shutdown pin, sinks or sources up to 20 mA, and utilizes a chopper-based amplifier architecture for low noise and drift. It is housed in a 6-lead SOT-23 package.

Feature Summary

• Chopper-based amplifier architecture reduces drift and offset for high precision
• Capable of sinking and sourcing 20 mA load current
• Integrated shutdown control for power management
• Low operating current suitable for battery-powered applications

Applications

• Precision data acquisition systems
• High-resolution data converters
• Medical equipment applications
• Industrial controls
• Electric vehicle battery management systems

Procurement Notes

Verify the specific suffix 'RW' against official documentation to confirm packaging details, as standard datasheets may not explicitly define this distributor-specific code. Ensure the component meets AEC-Q100 automotive qualification requirements if intended for such environments, noting that the 6-lead SOT-23 package is the qualified variant. Cross-reference the manufacturer part number with authorized distributors to confirm authenticity and traceability.

Selection Notes

Select this component when a stable 1.8V reference is required with high accuracy and low power consumption. The SOT-23-6 package is ideal for space-constrained designs. Consider the 20 mA drive capability for direct interfacing with ADCs or sensors without additional buffering. Verify input voltage ranges meet the minimum 2.0V requirement for proper operation at all temperatures.

Part Context

This part belongs to the MCP1501 family of high-precision buffered voltage references. The family includes variants with different fixed output voltages ranging from 1.024V to 5.000V. While most variants share similar electrical characteristics, the 1.8V option provides a specific reference level commonly used in digital logic and mixed-signal circuits. The T suffix indicates tape and reel packaging.

Replacement Considerations

Direct replacements within the same family include other MCP1501 variants with different output voltages if the system allows voltage adjustment. For alternative packages, check the SOIC-8 or WDFN-8 versions of the MCP1501 series, ensuring pin compatibility and thermal performance match the design requirements.