Overview
The MC1403M/TR is a precision voltage reference integrated circuit manufactured by ON Semiconductor. It provides a fixed 2.5V output with exceptional stability and accuracy. This device is part of the MC1400 series and is widely used in industrial, automotive, and consumer electronic applications where precise voltage references are required. The TR suffix indicates it comes in tape and reel packaging for automated assembly.
Structure and Working Principle
The MC1403M/TR utilizes bandgap reference technology to generate a stable 2.5V output regardless of input voltage variations within its specified range (typically 4.5V to 40V). Internally, it consists of a temperature-compensated reference element, amplifier, and output buffer. The device maintains its accuracy over a wide temperature range (-40°C to +85°C) with a typical temperature coefficient of 10ppm/°C.
Key Features
The MC1403M/TR offers several notable characteristics: initial accuracy of ±0.5%, low dynamic impedance, and excellent long-term stability. Additional features include low output noise, wide operating temperature range, and the ability to source or sink current. The device is available in various package options including SOIC-8 and DIP-8 for different mounting requirements.
Application Areas
This voltage reference IC finds use in numerous electronic systems including precision analog-to-digital converters, digital-to-analog converters, and power supply monitoring circuits. Other common applications include battery-powered equipment, industrial control systems, and test/measurement instruments where stable reference voltages are critical for accurate operation.
Maintenance and Precautions
When using the MC1403M/TR, ensure the input voltage does not exceed the absolute maximum rating (typically 45V) to prevent device damage. Proper PCB layout is important - place decoupling capacitors close to the device and minimize trace lengths to the reference output. For high-precision applications, consider the thermal environment as temperature gradients can affect performance.
B2B Procurement Guide
When sourcing MC1403M/TR components, verify the manufacturer's authenticity as counterfeit parts can be an issue in the semiconductor market. Consider purchasing from authorized distributors or directly from the manufacturer. Minimum order quantities typically apply, with price breaks available at quantity tiers (e.g., 100, 500, or 1000 pieces). Lead times can vary from stock availability to several weeks for non-standard packages.