ADS1118IDGSR

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Data Acquisition - Analog to Digital Converters (ADCs) convert an analog signal such as temperature, pressure, or voltage into a numerical format. This digital signal can then be processed by a computer for data analysis or for control applications such as driving motors or controlling heaters. One of the most popular ADCs is the ADS1118IDGSR from Texas Instruments. This article will discuss the application fields of the ADS1118IDGSR and the working principle behind it.

The ADS1118IDGSR is a single-channel, 18-bit delta-sigma analog-to-digital converter (ADC) with an integrated temperature sensor, differential inputs, and an onboard reference. The device is ideal for a variety of applications including battery-powered data acquisition and control, measuring small signals in noisy environments, and temperature-compensated bridge measurements. The device has a selectable data rate of up to 1.2 megasamples per second (MSPS) and offers a 70 dB signal-to-noise ratio (SNR). It also supports a wide input voltage range from 0.55 V to 3.6 V.

The working principle of the ADS1118IDGSR is based on the delta-sigma modulator design. The device's amplifier and modulator take the input signal, convert it to a voltage value, and feed it into the internal track-and-hold structure. The delta-sigma modulator then encodes the input voltage into a 1-bit stream and passes the stream through a digital filter. The filter cleans up the noise and creates a high-resolution digital output. The temperature sensor also measures the device temperature and outputs an average value that is digitized and stored on the internal data registers.

The ADS1118IDGSR is capable of measuring very small changes in analog signals with accuracy and precision. This makes it well suited for medical and industrial applications, such as measuring temperature and pressure in medical instruments, testing and measuring circuits or components in industrial or automotive settings, or as part of an environmental monitoring system. It can also be used for data logger applications where high resolution and low noise are desired, such as in battery-powered systems for measuring sound or vibration levels.

The ADS1118IDGSR is a powerful and versatile ADC for a variety of applications. It is easy to program and can be configured to suit specific needs. With its high performance, accuracy, and ability to measure small signals in noisy environments, the ADS1118IDGSR is well equipped for a wide variety of data acquisition and control applications.

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