DS1859E-050

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The DS1859E-050 device is an advanced digital potentiometer that has been designed by Maxim Integrated Products, Inc. It is a versatile and cost effective solution for setting the feedback and gain resistor values of audio amplifiers, power-supply regulators, active filters and many other applications. It integrates a dual-channel digital potentiometer into a small 8-pin package.

The DS1859E-050 operates in three distinct modes - “digital linear”, “logarithmic” and “resistor ladder”. In digital linear mode, the device provides an output level that is linear with the wiper setting. In logarithmic mode the output level follows an exponential law, increasing logarithmically with increasing resistance. Finally, resistor ladder mode, the device provides a resistive output which is stepped according to the binary inputs.

The DS1859E-050 is designed to accept two logic level inputs, UP/DOWN, and STEP which are used to control its operation. When the UP/DOWN pin is in the logic high state, the wiper setting increases. The rate of increase is determined by the logic level of the STEP input. If the STEP pin is in the logic high state, the rate of increase is much faster. If the UP/DOWN pin is in the logic low state, the wiper setting decreases. The rate of decrease is also determined by the logic level of the STEP input.

The DS1859E-050 device is suitable for a wide variety of data acquisition applications as well as adjustable gain /compensation circuitry. It can be used to control adjustable gain amplifiers, level sensors, active filtering, sigma-delta converters and digital-to-analog converters. It offers a very low memory requirement, making it well-suited to applications with limited memory availability. As well, it can be programmatically and digitally calibrated, eliminating errors caused by manual calibration.

The DS1859E-050 is an ideal device for data acquisition applications, such as providing a variable voltage reference for A/D converters, setting potentiometer values in audio and power control circuits, and temperature sensing. The device is also suited for applications such as hot swap controllers, PC audio, and automotive audio systems.

The main advantage of the DS1859E-050 is its high precision and low wiper resistance. It also provides superior noise immunity and can operate over a wide temperature range. The device has an integrated power down mode and a wide input/output voltage range. It is also RoHS compliant and offers many other features, including digital write protection and adjustable slew

In conclusion, the DS1859E-050 digital potentiometer is a versatile and cost effective solution for a range of data acquisition and temperature sensing applications, such as audio and power control circuits, sensing circuitry, and digital-to-analog converters. It offers superior noise immunity and a wide temperature range. Additionally, it integrates an integrated power down mode, digital write protection and adjustable slew rate, making it an ideal choice for many applications.

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