ADS7948SRTER

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Data acquisition is an essential task in many applications, particularly those requiring accurate conversion of an analog signal to a digital form. The ADS7948SRTER is an analog-to-digital converter that provides a low cost, high throughput solution to this problem. This article will discuss the application field and working principle of the device.

Application Field

The ADS7948SRTER is most often used in applications requiring high accuracy data conversion for medical, aerospace, and automotive applications. With its 12-bit resolution, the device can accurately convert up to five analog inputs with its simultaneous sampling architecture. It is also ideal for industrial control and instrumentation applications, where its low power consumption and low noise performance are important factors.

The device is available in several packages, including a 4-channel QFN, which provides an optimized solution for high density PCBs. It can also be mounted directly on a daughter board for easy integration. The ADS7948SRTER is ideal for deployment in a wide range of environments, including high temperature and wet environment, due to its high temperature operation range of -55°C to +125°C.

Working Principle

The ADS7948SRTER relies on a successive approximation register (SAR) architecture for its analog-to-digital conversion. The SAR uses a reference voltage, known as a Full-Scale Reference (FSR), to generate a range of voltages for comparison with the input. The SAR includes a cognitive circuit for error correction, which allows it to choose the closest value to the input.

The ADS7948SRTER provides a high speed provided 50 MSPS (Mega Samples Per Second) conversion rate. Its advanced architecture also allows it to provide high accuracy with its 12-bit resolution. The device is designed to operate with both single-ended (unipolar) and differential (bipolar) analog inputs.

The device also features a built-in voltage regulator to provide a stable power supply. This eliminates the need for an external voltage regulator, saving space in the design. The regulator also provides a significant reduction in power consumption, making it ideal for battery-powered applications.

The ADS7948SRTER includes a built-in clock that can be programmed with the desired rate up to 50 MSPS. Additionally, the clock can be synchronized with an external clock source, allowing the conversion rate to be adjusted to match the sample rate of the application. The integrated clock also eliminates the need for an external clock oscillator, which further reduces the power consumption of the device.

The ADS7948SRTER is also equipped with a number of built-in programmable features, including reference selection, range scaling, and timing configuration. These features allow the device to be easily tailored to the requirements of the application.

Conclusion

The ADS7948SRTER is a powerful, low cost analog-to-digital converter designed for applications requiring high accuracy data conversion. Its SAR architecture provides a 12-bit resolution with a fast 50 MSPS conversion rate. The device is available in several packages and also features a built-in voltage regulator, clock generator, and programmable features. This makes it an ideal solution for a wide range of applications.

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