AD7575KPZ

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Analog-to-Digital Converters (ADC) are electronic systems used to convert of analog signals into digital information. The AD7575KPZ is a highly integrated ADC from Analog Devices specifically designed for data acquisition applications. This article will discuss its application fields and working principle.

The AD7575KPZ is a 12-bit(voltage)/14-bit(current) ADC with 8 lines of buffered multiplexes at 2 MSPS (Megasamples per second) throughput. It can perform simultaneous sampling or multiplexing of close analog signals with no need for a shift register. It has a differential nonlinearity of 0.25LSB (least significant bit) at 12-bits. The device also features a low-power Sleep mode that make system design more power-efficient. This ADC is ideal for process control and measurement, ultrasound imaging, factory automation, and medical imaging.

The AD7575KPZ features an internal oscillator, which is capable of operating with no external components. It employs S&H (sample and hold) blocks with rail-to-rail input ranges. It also contains an analog output stage which helps prevent overloads and improves silicon accuracy. The device can be configured to accept a wide range of input signal amplitudes. It includes an internal voltage reference for improved accuracy and allows for temperature calibration.

The AD7575KPZ works on the principle of successive approximation. It begins with a digital input signal from an ADC control logic block and then it is fed to a latch circuit. The latch stores the input signal. The signal from the latch is sent to the analog comparator, which compares the digital signal to the analog input signal. If the digital signal is greater than the analog signal, a “1” is outputted, otherwise a “0” is outputted.

The output signal from the comparator is then sent to the successive approximation register (SAR) which is then used to control the internal clock. This clock generates a sequence of pulses that are used to adjust the output of the latch and thus creates the digital value of the analog input. The SAR continuously updates the internal clock signal until the correct digital value of the analog input is determined. Finally, the digital signal is sent to the output pins of the ADC and is ready for further processing.

The AD7575KPZ is a highly integrated ADC and is capable of digitizing analog signals with a fast throughput and low power consumption. It is a very flexible device and can be used in a variety of applications. It is a great choice for data acquisition applications such as process control and measurement, ultrasound imaging, factory automation, and medical imaging.

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