LM4040A20IDBZT Integrated Circuits (ICs)

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PMIC (Power Management Integrated Circuit) is a complex and technologically advanced system that regulates the voltage and current used in a multitude of devices. Voltage references are a critical component of any PMIC, providing an accurate and stable reference voltage for incremental adjustment of the voltage and current output. The LM4040A20IDBZT is an ultra-precise voltage reference designed for use in a wide range of applications demanding an accurate and stable reference voltage.

Applications

LM4040A20IDBZT voltage references are primarily used in precision applications, such as data acquisition systems, factory automation systems, mobile phones, gaming consoles, automotive systems and medical electronics. The LM4040A20IDBZT voltage reference operates in an extended temperature range (-40°C to +125°C), making it suitable for a range of applications including automotive, industrial and medical, and is also suitable for use in high-temperature and harsh-environment applications. The device comes in a small package and offers high current capability and low output noise.

Working Principle

The LM4040A20IDBZT voltage reference provides an extremely precise, low-noise reference voltage at an output of +2.00000V with a temperature stability of ±0.4ppm/°C and a long-term stability of ±0.2ppm/°C over time. The device uses the burning voltage principle (zener diode or avalanche diode) combined with a precise linear operation in order to guarantee precise and stable voltages in varying conditions. The precise linear operation allows extremely precise voltage regulation in the presence of load and temperature changes, while the precise reference voltage is free of errors due to temperature, time and load.

The LM4040A20IDBZT uses a constant current source to regulate the output voltage. A feed forward error amplifier is used to control the output voltage and to keep it in-line with the temperature and time constraints. This constant current source and error amplifier are combined with an auto-zeroing function to create a low-noise voltage reference with low drift over time, temperature and load changes.

Conclusion

The LM4040A20IDBZT is an ultra-precise voltage reference designed for precision applications such as data acquisition systems, factory automation systems, automotive systems, mobile phones, gaming consoles and medical electronics. The device offers excellent accuracy and stability over temperature and time, and a low-noise voltage regulation which is ideal for harsh and high-temperature environments. The LM4040A20IDBZT is an ideal solution for applications demanding an accurate and stable reference voltage.

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