AD7878SQ/883B

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Analog to digital converters (ADCs) are electronic devices that are used to convert analog signals into digital signals. The AD7878SQ/883B is a high accuracy, low power, single channel analog to digital conversion integrated circuit that is specifically designed for data acquisition applications. This page will discuss the application field of the AD7878SQ/883B, as well as its working principle.

Application Field

The AD7878SQ/883B is a low power, 12-bit A/D converter with a single channel, and it is specifically used for data acquisition. It can be used for applications such as temperature sensors, medical imaging, industrial control and many other applications that require precise signal conversion. The device operates from a single 2.5V to 5.5V supply and consumes up to 300µA at 3V and 500µA at 5V. It has an accuracy of 12 bits, with an INL of ±2 LSB and DNL of ±1 LSB.

The AD7878SQ/883B has an integrated low-noise amplifier and voltage reference, which makes it ideal for low power and low noise applications. The device also has an integrated programmable gain amplifier (PGA), which makes it suitable for applications such as medical imaging and temperature sensors that require a variable gain. The device comes in a small 0.6mm x 0.6mm QFN package, making it suitable for small form-factor applications.

Working Principle

The AD7878SQ/883B works by converting the input analog voltage into a digital signal. The device has an integrated reference voltage of 1.25V, which is used to convert the analog input to a digital output. The device also has internal circuitry that stabilizes the reference voltage, and allows the device to work with different input voltages. The device also has an onboard PGA, allowing the amplifier gain to be adjusted. This makes the device suitable for applications that require variable gain.

The device has a single-ended input, which allows the analog input voltage to be applied directly to the device without the need for external components. It also has a digital output, which can be connected directly to a microcontroller or other digital logic circuitry. The device is capable of converting the analog input voltage into a digital signal with a resolution of 12 bits and an accuracy of ±2 LSB. The device has a conversion speed of 3.2MS/s, making it suitable for applications that require a fast conversion rate.

In summary, the AD7878SQ/883B is a low power, single-channel A/D converter specifically designed for data acquisition applications. It has integrated onboard components such as a reference voltage, low-noise amplifier, and PGA, making it suitable for applications such as medical imaging and temperature sensors that require precise and fast conversions. The device is available in a small 0.6mm x 0.6mm QFN package, which makes it suitable for small form-factor applications.

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