AD7091R-8BRUZ-RL7

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Data Acquisition - Analog to Digital Converters (ADCs) play a critical role in many application fields, especially when it comes to converting analog signals into digital form. AD7091R-8BRUZ-RL7 is one such ADC that has become popular in the market for its accuracy and performance. In this article, we\'ll discuss its application fields and working principle.

Application Fields

The AD7091R-8BRUZ-RL7 is a high-performance, low-power, 8-bit ADC specifically designed to provide excellent performance in a wide range of automation, test and measurement, and specific data acquisition applications. It is capable of converting analog signals in a range of 0V to 5V at sampling rates up to 200kHz. This ADC is particularly suitable for low-end signal processing applications such as temperature sensing, humidity sensing, and voltage and current measurements.

The ADC supports single-ended or differential inputs, and its onboard high-voltage input buffer allows high voltage measurements up to 15V, eliminating the need for external amplifiers. This feature, combined with the low power consumption and low form factor, make the AD7091R-8BRUZ-RL7 an ideal choice for applications that require precision signal conversion and minimal board space.

The device is available in small packages like SOIC and BGA, as well as a wide operating temperature range from -40°C to +85°C, making it an excellent choice for low-temperature and industrial applications. The AD7091R-8BRUZ-RL7 is also suitable for automotive applications such as in-vehicle monitoring, engine control, and fuel cell control.

Working Principle

The AD7091R-8BRUZ-RL7 contains a high-resolution, 8-bit SAR ADC core capable of converting analog signals in the range 0V to 5V. It consists of a capacitive array, comparator, digital-to-analog converter (DAC), and a decoder. The capacitive array is composed of several capacitors, each with a corresponding switch. The comparator compares the input voltage with a reference voltage generated by the DAC.

When the input voltage is greater than the reference voltage, the corresponding switch is opened, and the corresponding capacitor is then discharged, resulting in a decrease in the capacitance. This process is repeated till the capacitor reaches a point where the comparator finally detects the change and generates a logic output. This logic output is then decoded and the corresponding 8-bit code is obtained.

The ADC features total offset error of ±1 LSB, extremely low differential non-linearity error, gain error (span) of 0.5%FS, gain error (zero) of 1.5LSB and low power consumption. It also has an integrated low-pass filter and low-drift reference voltage source, which allows for optimized performance in harsh environments.

The AD7091R-8BRUZ-RL7 is a high-performance, low-power, 8-bit ADC designed for a wide range of automation, test and measurement, and specific data acquisition applications. It contains a high-resolution, 8-bit SAR ADC core capable of converting analog signals in the range 0V to 5V at sampling rates up to 200kHz. This device is particularly suitable for temperature sensing, humidity sensing, and voltage and current measurements, as it supports single-ended or differential inputs and has an onboard high-voltage input buffer allowing high voltage measurements up to 15V. It is available in small packages like SOIC and BGA, has a wide operating temperature range from -40°C to +85°C, and features total offset error of ±1 LSB, extremely low differential non-linearity error, gain error (span) of 0.5%FS, and gain error (zero) of 1.5LSB.

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