DS1881E-050+

The DS1881E-050+ is a member of Texas Instruments digital potentiometer family, designed for digital remote control applications. It is widely used in the data acquisition industry. In this paper, the application field and working principle of DS1881E-050+ will be presented.

1. Application Field

The DS1881E-050+ is a digital potentiometer and can be used as a multiple-stage resistor when integrated in a data acquisition system. It offers a wide variety of applications including audio, video and communications systems, and in industrial, instrumentation, and other complex control applications.

The DS1881E-050+ is especially suitable for applications that require the adjustment of volume, frequency, and gain. It also has the capability to store a variety of settings, and it features an 8-bit wiper resistance variable from 0 to 255.

The digital potentiometer is a simple and cost-effective solution for various applications requiring remote control and adjustment. With its low power consumption, it is a great choice for battery-powered applications.

2. Working Principle

The DS1881E-050+ digital potentiometer works on the principle of variable resistor. It consists of two internal variable resistors connected in parallel with an 8-bit wiper resistance variable from 0 to 255. It is controlled by an electrically erasable programmable read-only memory (EEPROM), which can store multiple settings and control the wiper position.

To adjust the resistor setting, the EEPROM sends signals to the wiper resistor which causes it to adjust the voltage applied to the two internal variable resistors. This way, the user can control the gain, frequency, or volume of the device by controlling the amount of current that flows through the digital potentiometer.

The DS1881E-050+ also has built-in non-volatile memory, so the settings remain even when power is removed. This makes it suitable for applications that require the setting to be stored over time or across different power cycles.

The DS1881E-050+ digital potentiometer is a reliable and cost-effective solution for data acquisition systems and other control applications. It offers a simple and accurate way of adjusting the settings of any electronic device.