DS1859B-020+T&R

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Digital potentiometers have been used for decades in the field of data acquisition for a wide range of applications such as controlling the voltage across a bridge or providing adjustable gain elements in filter networks. The latest generation of digital potentiometers, such as the Maxim Integrated DS1859B-020+T&R, provides a highly robust solution that can be used in a variety of applications. This article will discuss the application field and working principle of the DS1859B-020+T&R digital potentiometer.

Applications of the DS1859B-020+T&R Digital Potentiometer

The DS1859B-020+T&R digital potentiometer is specifically designed for use in audio systems and automotive applications. In automotive audio systems, the DS1859B-020+T&R can be used to adjust the gain of amplifiers or equalizers, giving the user full control over the audio. In addition, the DS1859B-020+T&R can also be used to reduce EMI (electromagnetic interference), making it an ideal choice for audio applications.

The DS1859B-020+T&R is also suitable for use in automotive applications where a variable voltage may be required. For example, when adjustable actuators are used, a variable voltage can be used to adjust the gain of the actuator and control its speed. The DS1859B-020+T&R digital potentiometer is suitable for use in these applications as it is highly resistant to temperature and EMI and offers excellent control resolution.

The DS1859B-020+T&R is also suitable for signal conditioning applications such as low-frequency signal conditioning and signal filtering. When at low frequency signal conditioning, the digital potentiometer can be used to adjust the gain of the signal, allowing the user to shape the signal and reduce noise. In signal filtering applications, the digital potentiometer can be used to create variable impedance networks. In addition, the DS1859B-020+T&R can be used in various other applications such as push-pull output stage adjustment, load switch adjustment and transistor current source adjustment.

Working Principle of the DS1859B-020+T&R Digital Potentiometer

The DS1859B-020+T&R digital potentiometer operates by converting an input voltage into a digital code. This digital code is then used to control the output resistance of the device. The output resistance of the device can be increased or decreased by increasing or decreasing the digital code. The output resistance is scaled by the user-selectable resistance scales and can be adjusted in increments of 1%, 2%, 5% or 10%.

The DS1859B-020+T&R is also equipped with an on-chip temperature sensor. This temperature sensor helps to maintain output accuracy by adjusting the conduction characteristics of the device so that the resistance is maintained across the operating temperature range. The temperature sensor is also useful in preventing thermal runaway in audio applications.

The DS1859B-020+T&R is programmed using a two-wire serial interface. This interface allows the user to easily read and write the digital codes which control the output resistance. In addition, the interface also supports writing to multiple devices using a single serial interface.

The DS1859B-020+T&R digital potentiometer is designed to operate over a wide temperature range, making it suitable for use in a variety of applications. In addition, the device is also designed to be highly resistant to EMI, making it an ideal choice for use in audio systems where EMI reduction is important. Finally, the output accuracy of the device is maintained over the operating temperature range, ensuring that the desired gain is maintained over the life of the device.

Conclusion

The DS1859B-020+T&R digital potentiometer is an excellent choice for use in a variety of data acquisition applications. Its wide range of features and robust design make it a great choice for both automotive and audio applications. In addition, its ability to maintain output accuracy over a wide temperature range makes it a great choice for applications that require a high degree of accuracy. Finally, its two-wire serial interface allows for easy integration into existing systems.

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