AD2S44-UM18B

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The AD2S44-UM18B is an Ethernet-controlled absolute angle-to-digital converter (ADC) developed by Analog Devices. This converter is an ideal solution for servo motor control, absolute angle monitoring applications, and measuring the absolute position of linear and rotary encoders. This device is capable of converting an analog sine wave input into a digital absolute angle value with a resolution of 12-bits and a measurement accuracy of ±0.05°. Because of its high resolutions and accuracy, it is a perfect choice for any high-precision angle position sensing applications.

The AD2S44-UM18B application field falls under the Data Acquisition - ADCs/DACs - Special Purpose category. The device is capable of measuring absolute angle and digital values precisely, thus making it suitable for applications such as engine speed control, anti-lock braking systems, shooting systems, automotive power steering, and engine control systems. The device is also widely used in unmanned aerial vehicles and desktop robotics.

The AD2S44-UM18B consists of two separate blocks. The first would be the angle converter and the second would be the absolute angular converter. The angle converter uses a high-precision sine wave input and a linear interpolation technique to provide analog-to-digital conversion with high accuracy and resolution. The absolute angular converter uses this data to return an absolute angle value with a resolution of 12-bits and a measurement accuracy of ±0.05°.

The AD2S44-UM18B also comes with a 16-bit digital core which provides high-speed and low-jitter operation. The digital core can be used to provide digital control signals with low latency, making it ideal for applications where fast and precise response is required. Additionally, an integrated SPI interface is included for networking digital devices, including Ethernet and PoE switches.

The working principle of the AD2S44-UM18B is based on a four-phase sine wave input. By using a linear interpolation technique, the four-phase sine wave input is converted into a digital value with a high accuracy of 0.05°. The device then applies a digital filter to reduce the noise and jitter on the input signal and returns an absolute angle value with a resolution of 12-bits and a measurement accuracy of ±0.05°.

The AD2S44-UM18B is an ideal solution for servo motor control, absolute angle monitoring applications, and measuring the absolute positions of linear and rotary encoders. The device is capable of converting analog sine wave input into digital absolute angle values with a resolution of 12-bits and a measurement accuracy of ±0.05°. With its high resolutions and accuracy, it is a perfect choice for any high-precision angle position sensing applications.

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