ICL8069CCSA

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A voltage reference is an electronic device used to fix a voltage at a specific level and is an important component in various electronic systems. The ICL8069CCSA is a low-power CMOS voltage reference IC from Dialog Semiconductor that provides a stable and accurate 1.25V output voltage in a very small SOT-23-6 package with a small number of external components. This article will explore the application field of ICL8069CCSA and its working principle.

Application Field of ICL8069CCSA

The ICL8069CCSA is designed to provide an economical and reliable solution for voltage references in applications such as data converters, power supplies, digital voltmeters and audio preamplifiers. The extremely low power consumption of the ICL8069CCSA makes it an attractive choice for designers looking to develop small and low power designs. It is also suitable for a wide range of operating temperatures, which makes it an even more reliable choice.

The ICL8069CCSA is ideal for mobile, cordless and portable applications due to its extremely low quiescent current consumption. It is also able to respond quickly to output voltage changes from one reference level to the other due to its streaming speed of up to 2MHz. This makes it an ideal solution for consumer electronics, automotive electronics and system applications.

Working Principle of ICL8069CCSA

The ICL8069CCSA uses a bandgap-based voltage reference architecture to set the voltage reference level. It uses a junction field effect transistor (JFET) as its output device, which ensures a low output impedance, low power consumption and good accuracy. It also contains an internal temperature sensor which is used to fine-tune the reference voltage over temperature to ensure its accuracy.

The ICL8069CCSA works as follows: a bandgap reference voltage is generated by the internal comparator circuitry, which is then compared to the voltage reference input. If the voltage reference input is higher than the bandgap reference voltage, the output voltage is increased. If the voltage reference input is lower than the bandgap reference voltage, the output voltage is decreased.

A temperature compensation circuit is also included in the ICL8069CCSA, which utilizes the internal temperature sensor to cancel out any offset generated by temperature changes. This ensures accuracy over temperature changes and enables the device to achieve a temperature coefficient (TC) of ±20ppm/°C.

Conclusion

The ICL8069CCSA is a low-power CMOS voltage reference IC designed by Dialog Semiconductor to provide a stable and accurate 1.25V output voltage in a very small SOT-23-6 package. It can be used in various applications such as data converters, power supplies, digital voltmeters and audio preamplifiers and is ideal for mobile, cordless and portable applications due to its extremely low quiescent current consumption. It uses a bandgap-based voltage reference architecture to set the voltage reference level and contains an internal temperature sensor for fine-tuning the accuracy over temperature changes.

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