IRU431LCL5TR

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Voltage references are important components of electronic circuits and power management ICs (PMICs), providing stable and consistent output levels that are sourced from a given reference voltage. The IRU431LCL5TR Voltage Reference is a positive 3.2V Voltage Reference which offers a low temperature drift, low offsets and excellent noise characteristics. This device can be used in a variety of applications, from driving linear and voltage control power supplies, to providing precision reference voltages for microcontroller systems and improved line regulation in switching power supplies.

Application Field for IRU431LCL5TR Voltage Reference

The IRU431LCL5TR Voltage Reference is designed to provide very accurate and stable output voltage over a wide range of temperature, input voltage and load conditions. It can be used to accurately regulate output voltages in a wide variety of applications such as:

• Linear and Switching Power Supplies – For precision voltage settings and improved line regulation of output voltages.
• Voltage Controlled Oscillators (VCOs) – To provide consistent reference voltages for VCO oscillators in communications and other circuits.
• Microcontroller Systems – To provide precision control of logic operating voltages.
• Analog to Digital Converters (ADCs) – To provide very accurate reference voltages for the operation of analog to digital conversion circuits.

Working Principle for IRU431LCL5TR Voltage Reference

The IRU431LCL5TR Voltage Reference is a CMOS-based voltage reference device that utilizes a resistive current reference circuit and buffered output to provide very accurate, stable and low temperature drifts output voltage across a wide variety of conditions. The device has a very low offset voltage of 0.2mV, a low offset drift of 0.25µV/°C and a low temperature coefficient of 25µV/°C - providing excellent temperature stability for the output voltage.

The IRU431LCL5TR Voltage Reference has an operating temperature range of -40°C to +125°C, and a maximum input voltage rating of 8.0V. The typical output current is 65µA and the typical output noise voltage is 20µV RMS. The device also features an internal Band Gap reference circuit with an excellent line regulation and low power consumption.

The excellent noise characteristics of the IRU431LCL5TR Voltage Reference reduces noise pickup by analog circuits and improves overall system performance. It has high impedance and very low output impedance, eliminating the need for extra components. In addition, the device has very low EMI and RFI noise due to its low output impedance which reduces interference with other components in the system.

Conclusion

The IRU431LCL5TR Voltage Reference is a highly accurate and stable positive 3.2V Voltage Reference that can be used in a variety of applications such as driving linear and voltage control power supplies, providing precision reference voltages for microcontroller systems, and improving line regulation in switching power supplies. Its low offset voltages and temperature coefficient, excellent noise characteristics, and high impedance output make it an ideal choice for regulators and other power management ICs.

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