AD7776ARZ-REEL Integrated Circuits (ICs)

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Data Acquisition - Analog to Digital Converters (ADC) technology has progressed greatly over the past few decades. Precision analog-to-digital conversion is a basic requirement of many scientific, industrial, and commercial applications. AD7776ARZ-REEL is one such device that is used in these applications.

AD7776ARZ-REEL is a quad-channel, low-power, 24-bit sigma-delta analog-to-digital converter (ADC) with a 50 KSPS (kilo-samples per second) throughput rate. It is an advanced low-power solution for high resolution data acquisition. It is an ideal device for embedded sensing applications, such as industrial process control, test and measurement, medical instrumentation and medical imaging.

AD7776ARZ-REEL operates on single 3V supply and provides 24-bit 31.25Hz (±2 LSB max) accuracy. It features an adjustable input range of 0 V to 2.5 V and features 4 integrate-and-dump channels. The outputs are available in single-ended (2.5 Vref) or differential (AVDD to AVSS) mode. It also provides an internal temperature sensor and an integrated reference. The device is available in a 5x5 mm 32 pin Land Grid Array (LGA) package with 0.35 mm lithographic pitch.

AD7776ARZ-REEL has several features which make it suitable for a wide range of applications. It has low power consumption (<81 mW/channel active/196 mW typical at 50 KSPS). The device also features wide dynamic range (up to 110 dB) and high SFDR (Spurious Free Dynamic Range) with greater than 102dB SNR (Signal to Noise Ratio). Additionally, it is RoHS compliant, which makes it easier to incorporate into systems that need to meet environmental regulations.

The working principle of the AD7776ARZ-REEL is based on successive approximation (SAR). An input analog signal is converted into a corresponding digital value by a successive approximation technique. This technique converts the analog input voltage into a digital code by a series of binary comparisons. An oscillator triggers a set of switches, each controlled by a digital counter. The counter is compared to the analog input voltage and the voltage is stored in a register when the two match. The output is a binary code which corresponds to the digital value of the input voltage.

The AD7776ARZ-REEL also features several integrated features that allow for high accuracy and low noise integration. First, it features an over-sampling technique, where the data is oversampled and digitally filtered. This allows for improved accuracy and noise rejection. Additionally, the device also features a programmable amplifier, which can be used to adjust the gain and offset levels for the analog input. Finally, the device incorporates internal temperature compensation, which ensures that the device does not drift with changes in temperature.

In summary, the AD7776ARZ-REEL is an advanced analog-to-digital converter with a wide range of applications. Its low power operation, high-resolution, wide dynamic range, and integrated features make it an ideal solution for high-precision data acquisition applications, such as industrial process control, test and measurement, medical instrumentation, and medical imaging.

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