DS1847B-010+

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Data acquisition is a field of industrial and laboratory electronic systems that enable the measuring and recording of different physical parameters for various purposes. Digital potentiometers are a type of data-acquisition devices that enable the adjustment of voltages, electrical resistance or electrical capacitance, within a given range. The DS1847B-010+, a device in the range of digital potentiometers, facilitates this purpose and is used within industrial, commercial and military applications.

The main purpose of the DS1847B-010+ is to provide a control connection between host processors and the potentiometer elements used in industrial and commercial settings. To accomplish this, the device is built with a host interface, which consists of four signals: CS, SCK, SDI, and SDO. The signals are responsible for the bidirectional communication between the host processor and the DS1847B-010+.

The DS1847B-010+ is designed as an 8-bit nonvolatile digital potentiometer featuring a digital trim. It utilizes an SPI-compatible interface for bidirectional communication with host processors. A single-voltage supply of 1.8 to 5.5 volts is required for the device to operate. It also has a power-down control pin that is controlled by a host processor. Moreover, the device is rated to operate over a temperature range from -40 to +85 °C. The digital potentiometer is packaged in a space-saving 3×3 mm SOT23-8 package and it has a 20-position wiper, a 64-position word, and an adjustable termination resistor.

Regarding its application field, the DS1847B-010+ is mainly used in a variety of industrial, commercial and military systems that needs to adjust electrical parameters such as voltage, capacitance or electrical resistance. The device finds application within volume, balance and tone control of audio and video applications. It is also used in high value resistor and resistor trim applications, as well as application within power amplifiers, motor controls and military systems. The device’s standard voltage range allows for application within most industrial, commercial and military settings.

In terms of operating principles, the DS1847B-010+ utilizes successive approximation register (SAR) architecture that enables it to measure voltage and resistances accurately and rapidly. A comparison reference voltage is generated and the SAR compares the reference voltage created with the wiper voltage and the digital value can be determined from the comparison. The SAR is used to constantly evaluate and adjust the output voltage according to the digital value generated. This SAR architecture offers the device high accuracy and minimal stepping errors. The device also features a threaded ring that provides absolute positional accuracy and low resistance matching.

In conclusion, the DS1847B-010+ is an 8-bit nonvolatile digital potentiometer that facilitates the adjustment of voltages, electrical resistances and electrical capacitances within a given range. It offers a host interface featuring four signals and requires a single voltage supply from 1.8 to 5.5 volts for proper operation. It is designed for application within various industrial, commercial and even military settings and utilizes a SAR architecture for measurement of voltage and resistances.

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