MC1403DR2

Overview

The MC1403DR2 is a series voltage reference integrated circuit manufactured by onsemi. It provides a fixed output voltage of 2.5V with an initial accuracy tolerance of ±1%. The device operates within an input voltage range of 4.5V to 40V and supports a maximum load current of 10mA. It features a temperature coefficient of 40ppm/°C and draws a supply current of 1.5mA. The component is housed in an 8-SOIC surface-mount package and is rated for operation at temperatures between 0°C and 70°C.

Feature Summary

• Provides a stable 2.5V series reference voltage with high precision
• Operates over a wide input voltage range up to 40V
• Delivers up to 10mA load current capability
• Maintains stability with a low temperature coefficient

Applications

• Precision analog-to-digital converter (ADC) reference sources
• Digital-to-analog converter (DAC) voltage references
• Calibration circuits requiring stable DC voltage
• Power supply monitoring systems

Procurement Notes

Verify the specific suffix against official documentation, as the DR2 designation may indicate tape-and-reel packaging or specific manufacturing lot codes. Confirm RoHS compliance status and lead times directly with the manufacturer or authorized distributors, as availability varies. Ensure the operating environment remains within the specified commercial temperature range to maintain accuracy specifications.

Selection Notes

Select this component when a fixed 2.5V reference is required for low-power applications. Consider the 1% initial accuracy and 40ppm/°C drift for precision requirements. Evaluate the 10mA output current limit against load demands. Compare against other series references if higher current or different voltage levels are needed.

Part Context

The MC1403 belongs to the MC1403 family of three-terminal series voltage references. This family offers fixed output voltages with high stability and low noise characteristics. The DR2 variant specifically denotes the surface-mount SOIC-8 package configuration, distinguishing it from through-hole DIP alternatives within the same functional family.

Replacement Considerations

Compatible substitutes include the LM4040 series for adjustable references or other 2.5V precision references like the REF20xx series. Verify pinout compatibility and thermal performance before substitution.