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Data Acquisition - Analog to Digital Converters (ADC)

The ADS7850IRTET is a high-resolution, 16-bit analog-to-digital converter (ADC). It is designed for applications that require higher resolution and accuracy than either the 8-bit or 12-bit ADC\'s can provide. The ADS7850IRTET can be used to sample analog input signals in both single-ended and differential configuration. The output is a binary number that corresponds to the input signal strength.

Application Field

The ADS7850IRTET is suitable for a wide variety of applications that require high-resolution data acquisition, including medical imaging, laboratory automation, industrial control, and instrumentation. Its ability to accommodate both single-ended and differential inputs, coupled with its low power draw makes it an ideal choice for battery powered applications such as portable ultrasound scanners, personal medical monitoring devices and actimetry wearables.

Working Principle

The conversion process begins with the input analog signal applied to the converter’s input. The signal is then compared to a fixed reference voltage and the result is used to determine the output binary code.

The ADS7850IRTET produces a 16-bit binary coded output. The upper 8 bits of this output represent the fractional part of the result, with each bit representing a fraction of 1/256th. The lower 8 bits represent the integer part of the result, with each bit representing a factor of 2.

The ADS7850IRTET is a self-calibrated, low-power, low-offset converter that achieves excellent noise performance. The device also features a full differential input with offset cancellation, allowing for a wide dynamic range. This makes it ideal for precision measurements from a wide range of input signal amplitudes.

Additionally, the ADS7850IRTET supports a wide range of operating frequencies, accommodating input signals with both slow and rapid changes. The user can also choose to enable ON/OFF logic settings and selectable data acquisition modes.

Conclusion

The ADS7850IRTET is an ideal choice for applications that require precision data acquisition with a high bit-depth. It offers excellent noise performance, wide dynamic range, and low offset, in addition to the flexibility of being configurable to support multiple input signal types and frequency ranges. All of these features make the ADS7850IRTET an excellent choice for medical imaging, laboratory automation, industrial control, and instrumentation applications.

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