73M1903-IM/F

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The 73M1903-IM/F from Texas Instruments is a data acquisition system that offers 24-bit resolution and up to 102.3 dB SNR. It is specifically designed for medical, industrial, and general data acquisition applications. The 73M1903-IM/F includes an analog front end (AFE) to provide reliable and accurate data acquisition capabilities. This article will discuss the applications field and working principle of the 73M1903-IM/F.

Application Field

The 73M1903-IM/F is designed to capture and store analog data with very high accuracy. This data acquisition system is specially designed to meet the strict requirements of industrial, medical, and general data acquisition applications. In industrial applications, it can be used to measure stereo signals from sensors with up to 24 bits of resolution. It can also be used in medical applications such as recording patient vital signs. In general data acquisition cases, it can be used for recording various analog signals.

In addition to its primary data acquisition applications, the 73M1903-IM/F can also be used in non-data acquisition applications such as controlling motors, servos, and other mechanical systems. It also has many features that make it suitable for controlling robotic systems.

Analog front end (AFE)

The 73M1903-IM/F contains an analog front end (AFE) that is used to provide reliable and accurate data acquisition capabilities. The AFE’s main task is to provide high-precision analog-to-digital conversion of input signals. It can do this by using its Sigma-Delta modulation technology. This technology enables the device to achieve a wide dynamic range and a high level of accuracy when converting analog signals to digital.

The AFE also includes an automatic gain control (AGC) that can adjust the gain dynamically. This allows it to maintain the same SNR for various input signals. The AGC also increas the device\'s dynamic range so it can handle a wide range of input signals. Additionally, the AFE contains a low power noise canceling that reduces the total noise caused by the analog processing stages.

Working Principle

The 73M1903-IM/F uses sigma-delta modulation to convert analog input signals into digital signals. In this type of conversion, the analog signal is sampled, converted to 1-bit binary data, encoded, and then decimated, resulting in a digital representation of the original signal. The sigma-delta converter used in the 73M1903-IM/F has a 1MSPS sample rate and a 24-bit resolution.

The 73M1903-IM/F’s AFE also includes an AGC, which automatically adjusts the input signal gain in order to maintain a constant output level. This helps ensure that the device remains functional and reliable. The AFE also includes a low power noise canceling feature, which reduces the total noise caused by the analog processing stages.

Finally, the device has an on-chip temperature sensor, which measures the temperature of the device and then adjusts the offset and full-scale limits accordingly. This prevents errors from occurring due to temperature variations. All of these features combine to make the 73M1903-IM/F one of the most accurate and reliable data acquisition systems available.

Conclusion

The 73M1903-IM/F from Texas Instruments is a data acquisition system designed for high precision, accurate data acquisition. It includes an analog front end (AFE) with high-performance Sigma-Delta modulation technology and an automatic gain control. The AFE also includes a low power noise canceling feature, which reduces total noise caused by the analog processing stages. The device has an on-chip temperature sensor, which adjusts the offset and full-scale range as needed. All of these features combine to make the 73M1903-IM/F an excellent system for industrial, medical, and general data acquisition applications.

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