AD7863BR-10

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Data acquisition analog to digital converters (ADC) are electronic devices that convert analog signals into digital signals. The AD7863BR-10 is a 12-bit resolution, high-speed, low-power data acquisition system-on-chip (SoC) designed for system-level use. The product is packaged in a small 28-lead WQFN to save space and provide superior thermal dissipation. The device also supports a true single-supply operation, which makes it one of the lowest power single-supply ADCs available.

The AD7863BR-10 is suitable for mobile, portable and embedded applications. It is typically used in automotive, portable biomedical and consumer electronic devices. It is suitable for use in applications such as audio, battery management systems, digital displays, digital cameras, communications, automotive data acquisition, industrial process instrumentation and power management.

Working Principle

The AD7863BR-10 operates in hybrid differential bipolar mode, which is a mixture of single-ended and differential input ranges. The input signal can be provided in a single-ended format, or in a differential format where the signal is applied between two analog input pins, and the output represents the difference between the two signals.

The AD7863BR-10 operates in the frequency domain, sampling the signal at a given sampling rate. At the start of each sampling period, the signal is sampled and then held for a fixed period before the sample is converted into a digital signal. The sampling rate is determined by the sample rate clock signal (SCLK), with a nominal value of 25 MHz. The sample clock signal SCLK acts as an internal trigger for sample acquisition and conversion.

The AD7863BR-10 has an onboard, programmable digital filter to help reduce noise in the digital output signal. The filter uses a finite impulse response (FIR) and is programmed through registers via the serial digital interface (SDI). The filter can be programmed to operate in low-pass mode, high-pass mode or band-pass mode, depending on the application requirements.

The output of the AD7863BR-10 is a 12-bit resolution, serial digital signal. The digital output can be configured as a signed two’s complement output with a range of -2048 to +2047, or as an unsigned output with a range of 0 to 4095. The 12-bit output resolution provides enough resolution to accurately represent a wide variety of signals, even in noisy environments.

Applications

The AD7863BR-10 is a high-accuracy data acquisition SoC, making it ideal for use in a wide variety of applications. It is designed for use in audio, battery management systems, digital displays and digital cameras. In addition, it can be used for communications, automotive data acquisition, industrial process instrumentation and power management.

In audio applications, the AD7863BR-10 provides an excellent noise-to-signal ratio, making it ideal for use in high-fidelity applications such as professional audio recording and playback. In digital displays, the device can be used to digitize the signal from a display and provide a digital output of the image in a format which can then be displayed on a digital display. In automotive data acquisition, the device provides an excellent resolution and accuracy to monitor and control various parameters, such as engine temperature, fuel levels, speed and acceleration.

The AD7863BR-10 is also suitable for use in industrial process instrumentation and power management applications. The device can be used to digitize signals from process controllers, sensors, and other instruments. In power management applications, the device can be used to measure the voltage, current and temperature of various components of the power system.

Conclusion

The AD7863BR-10 is a 12-bit resolution, high speed, low-power data acquisition SoC which is suitable for a wide range of applications. It has an onboard digital filter which can be programmed to operate in low-pass, high-pass or band-pass mode. The output of the device is a 12-bit resolution serial digital signal, with a range of -2048 to +2047 or 0 to 4095. The device is suitable for use in audio, battery management systems, digital displays, digital cameras, communications, automotive data acquisition, industrial process instrumentation and power management.

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