REF5025IDR Integrated Circuits (ICs)

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A voltage-reference device is an electronic component that ensures the voltage in the supply of an electrical circuit is constant and remains unaffected by changes in the conditions or load in the circuit. The REF5025IDR is a low-power precision voltage reference from Texas Instruments that features an initial accuracy of up to 10 mV and can maintain a very stable output voltage under both thermal and line voltage variations.

The REF5025IDR family can be used in a variety of digital-to-analog converter (DAC) involving controller area networks (CAN) or memory card readers and other applications. They are also useful for maintaining an output in respond to fluctuations in load and in control applications where temperature or supply line fluctuations are critical.

Application Field

The REF5025IDR is suitable for various types of low-power systems. This type of voltage reference is quite popular in power management applications because of its low power consumption, low cost and high accuracy. It can also be used in microcontrollers, circuit calibration, data logging systems, and precision current sinks.

The device also ensures that voltage regulation is maintained, even when the temperature and/or the load in the circuit changes. This makes it well-suited for portable devices and applications operating at low power so that the power management can remain consistent even under changing conditions. One example is a laptop computer, which is designed to remain functional even if the environment changes, such as high temperatures.

The REF5025IDR is also capable of providing a stable voltage output, even when the line voltage changes. This feature makes it suitable for use in consumer products such as DVD players and digital cameras, as well as in automotive electronics. By being able to adjust the voltage output in response to changing line voltage and temperature, it ensures that the power delivered to components in the system remains consistent. The REF5025IDR is also useful for keeping a consistent output on switching power supplies with varied loads.

Working Principle

The REF5025IDR is based on a low-power band-gap voltage reference architecture, which uses a base bias generator to generate a forward reference voltage. This voltage reference is then passed through an op-amp circuit and an external resistor to create a stable, adjustable precision reference voltage.

The device also contains an output buffer, an internal band-gap reference, and an external compensation capacitor, as well as active protection circuits. The device also features a low quiescent current of less than 1 μA, making it suitable for low-power systems.

The REF5025IDR is able to maintain a very stable output voltage across a wide range of temperatures and line voltages. This makes it especially useful in low-power applications where power is limited, as well as in precision systems where accuracy and repeatability are critical.

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