DS1859B-050

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Digital Potentiometers

Digital potentiometers provide a wide range of applications, ranging from analog device calibration to data acquisition and signal chain conditioning. The DS1859B-050 digital potentiometer is especially designed for high density applications such as embedded systems, industrial monitoring, and medical instrumentation.

Chip Features

The DS1859B-050 is a dual, nonvolatile digital potentiometer that is designed to provide low power and high accuracy. The chip has 64 taps per channel which provide a wide range of digital resolutions from 10K ohms to 200K ohms, with each tap representing a resolution of approximately 31 ohms. It also has high signal-to-noise ratios and low distortion.

On-Chip Features

The DS1859B-050 features on-chip features such as the system integrator, which enables users to adjust the resistor values remotely while limiting the total power consumption. The chip also includes a nonvolatile EEPROM which enables values to be stored and retrieved upon power up. This chip is coupled with a voltage regulator, enabling the device to operate in a wide range of supply voltages.

Application Fields and Working Principle

The DS1859B-050 digital potentiometer’s application fields include controlling analog devices, actuators, and remote control of analog functions. The device can be used to adjust the operating level of audio amplifiers, set the brightness of LEDs and the speed of motors and other applications requiring variable level control. The chip also has various working principles. One is linear interpolation, which divides the potentiometer range into a series of digital steps. The chip has a central processing unit that reads and writes various parameters to the chip, controlling the actual resistor values based on a linear interpolation of the initial setting. With the help of EEPROM and the system integrator, the device can be programmed remotely, controlled, and adjusted with minimal power consumption.

Conclusion

The DS1859B-050 digital potentiometer is an efficient and cost-effective option for applications that require wide range, high resolution, and low-power operation. With EEPROM memory, system integrator, and wide range of resolutions, this chip is a perfect solution for various applications such as controlling analog devices, actuators, and remote control of analog functions. The working principle of this chip is linear interpolation which allows users to adjust the resistor values remotely and more accurately with minimal power consumption.

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