AD5206BRUZ10

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Data acquisition and control capabilities are essential facets to many applications, and digital potentiometers, in particular, can be effectively used to manage power flows and adjust signal levels, among other tasks. The AD5206BRUZ10, a single channel 8-bit resolution digital potentiometer, offers a potent tool among various digital potentiometers. It can be used to adjust the resistance value across a wide range of resistive strings, and support a 0factory-calibrated resistor string ranging from 5 kΩ to 100 kΩ.

The AD5206BRUZ10 is used in applications such as audio volume control and gain setting. It functions in both a ‘write-only’ mode, wherein the resistor string can be adjusted only until a desired resistance is reached, and a ‘read-write’ mode in which the resistor setting can be read back and then adjusted accordingly. Additionally, the device is also applicable for precision data loggers, wherein it serves as a complete, self-contained 8-bit digital pot. Furthermore, its low minimum resistance ensures that harmonic or signal distortions, or signal drops at low resistance settings, is prevented.

The device comprises a high-precision resistor string, internal control logic, an N-channel MOSFET array. A voltage reference and a 256-tap EEPROM are also included, resulting in a low-power, high-precision digital potentiometer. The resistor string is also calibrated between two resistance values, and is ratio-matched to the voltage reference for greater accuracy and stability. A PotMod pin is driven by the internal logic, allowing full-scale resistor string range settings to be made via a serial interface. The output voltage tap of the resistor string is also monitored depending on the mode; either the pseudo-potentiometer output or the resistor string resistance values can be read.

The AD5206BRUZ10 operates in both dual supply and single supply configurations. Its low voltage operation allows it to be powered with a single supply voltage of 2.7 V to 5.5 V. Additionally, its extremely low quiescent operating current of 500 μA mA also permits the device to be used in mid-range supply rails, further improving its efficiency. Furthermore, the 10-kΩ wiper resistance ensures that the device functions with no additional active components such as resistors, reducing board size and power requirements throughout the application.

The device also features a variety of control signals, ideal for meeting the requirements of many control systems. Its WIPER register controls the wiper setting, and the SPI interface allows for simple control over the digital potentiometer with a minimum of delay. Its Reset pin can also be configured to set the default state to desired resistance settings, ensuring the onset of new voltage and current settings when the device is powered up or reset. The AD5206BRUZ10 also features the adjustable ‘Zero’ resistance setting, allowing for sensitivity adjustment of the device and simplifying compensation of the resistor string. In addition, the device offers internal ESD protection and temperature-compensated resistance, thereby delivering greater accuracy and reliability in a wide range of applications.

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