AD5282BRU50

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Data Acquisition - Digital Potentiometers

AD5282BRU50 is a dual digital potentiometer which combines two independent 10K-tap, wiper-configurable digital potentiometers in a single 8-pin package. It features a V-DD and V-SS power supply with the range from 2.7V-5.5V, and a digital interface is an I/O port. This digital potentiometer provides two independent channels of 10K-tap and can be used as digital trimpots or dynamic controls/adjustments to current or voltage settings in analogue systems.

Application Field:AD5282BRU50 provides adjustable resistance across two independent 10K resistors. This device helps to represent a wide range of control settings and trim tasks in a small package. It is suitable for a variety of analog control applications, including automatic gain control, LCD bias control and LED brightness control.

Working Principle:The AD5282BRU50 utilizes a I/O-port serial interface for programming. This interface is driven by a low power algorithm for setting the values. Positive logic inputs and outputs, for I/O bytes is required. By writing data to the AD5282BRU50 via the I/O-port, the appropriate voltage develops to the selected tap resistor, setting the resistance.

The AD5282BRU50 has two independent channels (A and B). Each channel has a 10K tap resistor and 2 10-bit DACs which program the tap resistor values, allowing 1024 discrete steps. The device can be programmed to set different resistance values for each channel, or to maintain different wiper positions (percentage-of-travel setting).

In single channel mode, the wiper can be moved to any of the 1024 steps between 0% and 100%. In dual-channel mode, the two wipers can be moved to positions which change the resistances between 0V and either VDD or VSS, which depend on the device orientation.

The AD5282BRU50 also has an increment/decrement pin which enables the non-volatile resistance values to be modified without accessing the I/O-Port interface. This enables the user to make fine adjustments using very little power.

By using the I/O-Port interface, the resistance value of the AD5282BRU50 can be programmed non-volatile (EEPROM) or volatile (RAM). The EEPROM allows the resistance value to be held when power is cycled to the device, while the RAM allows resistance states to be modified on a ‘real-time’ basis.

The AD5282BRU50 also has an internal 5ppm/°C temperature coefficient which enables the resistance values to be matched across temperature changes. This feature makes the device ideal for use in temperature-stabilization systems.

The AD5282BRU50 is a very useful device for making adjustments to analog systems. With its low power and cost-effectiveness, it is well suited for use in a variety of analogue control applications.

The specific data is subject to PDF, and the above content is for reference