LM4040D25QDBZR Integrated Circuits (ICs)

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The LM4040D25QDBZR is a high-precision voltage reference in the Power Management Integrated Circuit (PMIC) voltage reference family. This voltage reference is designed to provide a stable, accurate output voltage performance over a wide range of operating conditions. The device is housed in the SOT-23 package and is specified in the extended temperature range of -40 degrees Celsius to +125 degrees Celsius.

The LM4040D25QDBZR has a quiescent current rating of 5.5 mA, a low operating temperature range of 0 - 70 degrees Celsius, and is rated for operation at 3.3 V. It has a wide temperature range of -40 - 125 degrees Celsius and a high temperature coefficient of 0.029%/degree Celsius. Its ultra-high accuracy voltage reference also has a low maximum drift at -100ppm/C°, ensuring excellent stability over time.

The LM4040D25QDBZR provides a reliable output voltage reference with superior accuracy and long-term stability over wide temperature ranges. It is especially suitable for battery-operated systems or applications requiring high accuracy and durability. The output voltage of this device is 2.5V and its accuracy is 0.05%, meeting the tight tolerance requirements in precision signal conditioning applications where accurate reference is needed.

The LM4040D25QDBZR works with an external reference voltage ranging from 1V to 5.5V. It operates at 3.3V and can be used with 3.3V logic systems. It has an output voltage tolerance of 0.05%, as well as low noise and ripple. The device has an enable/disable control using logic levels, providing the flexibility needed in changing system configurations.

The working principle of the LM4040D25QDBZR is based on the use of a band-gap voltage reference, which is an on-chip temperature-compensated voltage reference circuit designed to produce a constant voltage despite changes in ambient temperature. It utilizes two resistors in a voltage divider circuit, with the output voltage determined by the voltage drop across the lower resistor. This voltage is then compared to a reference voltage, and the resulting error signal is used to adjust the output voltage of the LM4040D25QDBZR until the two voltages match.

In summary, the LM4040D25QDBZR is a precision voltage reference designed for a wide variety of applications. Its low quiescent current rating, low drift and low operating temperature range makes it suitable for battery-operated systems or applications requiring high accuracy and durability. It has an output voltage tolerance of 0.05%, making it an excellent choice for signal conditioning applications. Its unique band-gap reference principle and on-chip temperature compensation provides accuracy, low noise and excellent stability over time.

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