AD5171BRJZ100-R7

Data acquisition has become an increasingly important tool that allows scientists, engineers, and industry professionals to collect, store, and analyze data from a variety of physical systems. One particular type of data acquisition, digital potentiometers, has seen particularly widespread use due to their simplicity, accuracy, and wide range of applications. The AD5171BRJZ100-R7 is a digital potentiometer, and its features, application field, and working principle are discussed in this article.

The AD5171BRJZ100-R7 is a CMOS-based 64-tap, 360 degree digitally controlled potentiometer. It is designed for low current consumption and high accuracy, with an effective resolution of 10 bits. It exhibits linearity over a wide range of temperature and voltage, with a rated temperature operating range of -40 to +85°C and voltage supply range of 1.8 to 5.5V. It also features a low "off-tap" current consumption of 2µA and low power operation modes that enable current consumption of as low as 0.1µA.

The AD5171BRJZ100-R7 is a versatile device, with a broad range of applications in data acquisition and automation systems. It can be used as a stand-alone unit for simple position control, or as part of more complex systems, such as robotic arms, programmable logic controllers (PLCs), and servo motors. It is also suitable for use in low-resolution digital-to-analog conversion applications, such as temperature controllers, audio amplifiers, and waveform generators.

The working principle of the AD5171BRJZ100-R7 is based on the resistance-voltage (R-V) characteristic of a digital potentiometer, which is determined by the position of the wiper output. This position is digitally programmable by setting the voltage at the Non-volatile (NV) register inputs through a serial interface. When connected to a power supply and the wiper output is set, the device will maintain its set point even when power is removed or the voltage fluctuates due to load or line variations.

The device also features a shift register, which is used to set the Non-volatile (NV) register’s memory words. This is done by sequentially writing the 8-bit register setting to the shift register, and then a clock pulse is used to write the setting to the NV register. The clock pulses are generated by an external signal or by programming pulse modulation.

The AD5171BRJZ100-R7 is a useful device for many different data acquisition applications, due to its simple, reliable operation and its wide range of features. It provides accurate digital control over analog signals, allowing for precise control over systems and minimizing the need for calibration. Its low power consumption and wide operating range makes it well suited for use in a variety of systems, from audio amplifiers and waveform generators to robotic arms and servo motors.