AD7851KRZ

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Analog-to-digital converters (ADC) are essential for data acquisition and processing, as they convert analog signals into digital ones. The AD7851KRZ is an 8-bit plus sign, low power, voltage output, successive approximation register (SAR) ADC, designed specifically for low resolution ADC applications. Its advanced features, low footprint area and tiny pin layout make it the choice converter for portable and handheld devices.

The AD7851KRZ has a maximum sampling rate of 500 kHz and both a resolution of 8bits and 1% accuracy. It is powered by a single +2.7 to +5.5V supply with an input voltage range ranging from -10V to +10V, so it can easily work with a variety of analog inputs. The device features a wide input bandwidth and high common-mode noise rejection, so it can handle a wide range of analog data signals efficiently. Its fast conversion time makes it an attractive option for low-speed, low-resolution ADC applications, while its low power consumption, 1.0μA maximum supply current, and small package size, make it ideal for applications where space and power are at a premium.

The AD7851KRZ features an on-chip oscillator and programmable logic and multiplexing capabilities. This allows the customer to configure the device in a variety of ways, enabling customized levels of performance and cost efficiency. The device supports a single-ended input range, a pair of single-ended inputs, or a differential input, enabling the designer to adapt the device to the specific application and accuracy requirements. It also offers a variety of different internal tracking and conversion modes, including single conversion mode, continuous tracking mode, differential mode and bipolar offset range.

The core of the ADC is the successive approximation register (SAR). This is the core component of the device, which is responsible for the conversion process from analog to digital. The SAR works in conjunction with an integrator, a decoder and a comparator, to achieve its task. It begins by applying a series of small voltages to the analog input. The integrator accumulates the voltages until the magnitude of the analog input is matched. When this is done, the decoder stores the collected information in the SAR. The SAR uses the voltage data to determine the digital output value. These values are then compared with the values of the previous conversion process and the new value will become the digital output.

The AD7851KRZ can be used in a variety of different applications, such as medical instruments, test and measurement, automotive, audio and video, industrial control and power management, telecommunications, and other low-speed applications. Its wide range of operating modes and small form factor allow it to be adapted for a variety of different application requirements. This makes the AD7851KRZ a versatile and reliable device that is ideal for a wide range of applications.

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