DS1806-100

Data Acquisition – Digital Potentiometers are devices that enable flexible control of resistance. The DS1806-100 is a popular digital potentiometer that offers precise, reliable digital control of resistor values. The device features 100 separate resistors and is programmed to adjust resistance remotely. This article will discuss the applications, working principles, and other features of the DS1806-100.

Applications of DS1806-100

The DS1806-100 is an ideal device for applications that require variations in resistance and voltage level control. It is suitable for use in most capacitors, switches, and voltage levels where precise motion control is desired. The device can also be used in the adjustment of electronic circuit parameters, such as gain and offset, that require precise control. Other uses include the development of temperature, pressure, or force sensors, or any other application that requires the precise control of resistance.

Working Principle

The DS1806-100 is a potentiometer with 100 identical resistors connected in series, all driven by the same control voltage (Vset). When the digital potentiometer is powered up, the internal resistors are all at the full resistance of the device, i.e., 100K Ohms. An on-chip controller then routes current along different paths according to the data sent from an external control device. The control device can change the resistance of the total circuit between 0 and 100K Ohms, by selectively turning on and off different resistors. As the number of resistors is the same as the maximum resistance, each resistor can be given a different value, no matter how small. Each programmed resistance can be set directly or by process of addition.

Features of DS1806-100

The DS1806-100 includes a variety of features that make it an attractive device for use in a wide range of applications. In addition to the basic features mentioned above, the device features a built-in logic amplifier with two output channels, allowing for dual power source switching, as well as an adjustable soft start circuit to prevent transient voltage spikes. The device also features an output waveform generator to generate waveforms for testing and tuning integrated circuits, as well as built-in temperature compensation and feedback loops to ensure accurate and stable operation throughout a wide temperature range.

The device is also designed for low power consumption, with a standby current of less than 1 microampere. This low power consumption, combined with its compact size, makes it ideal for battery-operated applications. The device also features a convenient interface for programming in either single-byte or multiple-byte writes, with programming speed up to 10 Mbits per second.

Conclusion

The DS1806-100 is a versatile and reliable digital potentiometer that offers precise control over resistance. It is suitable for use in a wide range of applications that require precise control of resistance and voltage levels. The device features a variety of features, including a logic amplifier, adjustable soft start circuit, waveform generator, and low power consumption, making it an attractive choice for a range of applications.