DS1856B-M50+

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Data Acquisition - Digital Potentiometers

Digital potentiometers are electronic components designed to offer a variable voltage controller in a circuit. A potentiometer, also known as a pot, is a three-terminal resistive circuit component that has no on/off switch and is used to control the current flow. They are typically used in applications that require an adjustable voltage or current, allowing easy adjustment of settings for any given application. Digital potentiometers offer many advantages over traditional potentiometers, making them ideal for a wide range of electronic circuit designs.

DS1856B-M50+ Application Field and Working Principle

The DS1856B-M50+ is a digital pot from Maxim Integrated. It is a dual, 7-bit, non-volatile potentiometer, meaning the settings are retained when the device is turned off. It offers a maximum resistance of 50KΩ between two terminals and an additional 125KΩ resistance between the two wiper terminals. The device contains two separate digital potentiometers, each with its own memory and power supply.

The DS1856B-M50+ is suitable for applications where a smooth transition between settings is desired, such as volume control, LCD contrast control and pump speed control. It is also ideal for operation in harsh environments, as the device is immune to vibration and shock due to the non-volatile memory. The wide resistance range also allows it to be used in applications that require a higher resistance value, such as in battery-powered circuits.

The DS1856B-M50+ features a non-volatile memory which is used to store the settings of the device, meaning that the settings will not be lost when the power is turned off. This makes the device ideal for use in an automated system that requires the settings to remain consistent when the power is cut. Additionally, the device features a low power consumption, allowing it to be used in battery-powered applications with a long life.

The working principle of the DS1856B-M50+ is based on a regulated operational amplifier circuit. A reference voltage is applied across the two ends of the potentiometer, whichers which is determined by the settings of the two wiper terminals. The output voltage is then automatically adjusted by adjusting the resistance of the potentiometer. This allows the device to offer smooth transition between settings.

The DS1856B-M50+ is available in a variety of packages, including dual and quad flat no-lead packages, making it suitable for a wide range of applications. It offers a wide input voltage range (1.65V – 5.5V) and extremely low power consumption of just 0.1μA. It is also equipped with high-temperature ESD protection and exceeds the JEDEC standards for moisture sensitivity and sesistive thermal shock.

Overall, the DS1856B-M50+ is a great choice for a wide range of digital potentiometer applications. It offers a wide resistance range, high ESD protection and low power consumption, along with its low-cost and small packaging options. With its robust performance and ease of use, the DS1856B-M50+ makes an ideal choice for digital circuit design.

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