ZXRE4041DRSTZ

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Voltage reference circuit is an important part of Power Management Integrated Circuit (PMIC). It provides constant voltage reference for the circuit within to compare voltage. ZXRE4041DRSTZ is a voltage reference which shows excellent performance with low power consumption and small area. It is widely used in various applications, such as LCD backlight driver and digital power supply. This Voltage reference is an on-chip bandgap circuit with a precision temperature coefficient and it is used to generate accurate and temperature stable reference voltage for power and voltage regularts. The internal architecture of the ZXRE4041DRSTZ combines three blocks: a bandgap circuit, a low low noise CMOS amplifier, and a programmable current source. The bandgap circuit is based on a simple transistor based structure which is biased to the nominal operating temperature of the device. When heated, the device becomes less resistive and the voltage output from the bandgap increases, compensating for the temperature variation of the power supply. This type of bandgap reference provides excellent temperature stability, but with a relatively large area and power consumption. The latch-free CMOS amplifier has a very low input offset voltage and a wide supply range, making it suitable for high precision applications. The amplifier has two inputs; the first is for the bandgap voltage reference, and the second is for the voltage output of the programmable current source. This input allows the user to adjust the voltage output of the reference by simply setting the current output of the source. The adjustable current source generates the output current which is directly proportional to the voltage reference output. The current source is usually paired with the bandgap circuit and CMOS amplifier to adjust the output voltage of the reference circuit. The current source is also used to fine tune the accuracy of the voltage reference by adjusting the output voltage. In conclusion, ZXRE4041DRSTZ is an excellent voltage reference with low power consumption and small area. Its bandgap circuit provides excellent temperature performance and the adjustable current source allows user to fine tune the output voltage accuracy. This device is widely used in various applications, such as LCD backlight driver and digital power supply.

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