ADC1175CIMTC/NOPB

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Analog-to-digital converters (ADCs) are electronic devices used to convert analog signals into digital form. They play an important role in many industries, from electronic engineering to industrial control systems. Among the various types of converters available on the market today, the Texas Instruments ADC1175CIMTC/NOPB converter stands out for its advanced features and reliable performance. In this article, we will discuss the application field and working principle of this ADC.

Application Field

The ADC1175CIMTC/NOPB from Texas Instruments is a single-channel high-speed analog-to-digital converter (ADC) with an I2C interface. It is well suited for low-power applications such as portable medical equipment, audio/video electronics, and communications products. In addition, the ADC is ideal for applications requiring high sampling rates, such as sonar systems and scientific instrumentation. The device also works well in automotive systems that require low power consumption and high resolution.

The ADC1175CIMTC/NOPB features a single 12-bit ADC channel with a 1.2V full-scale range and a 0.15V to 1.2V common mode range. It is capable of sampling at a rate of up to 40 MSPS (million samples per second). The device achieves a dynamic range of -84 dBc @ 10 MHz and has a digital noise suppression (DNS) of -75 dBc @ 10 MHz.

The ADC has a low power 27 mW power consumption in normal mode and 1.6 mW in power saving mode. It has a small form factor of 3mm x 3mm and is available in both TSSOP and QFN packages. The ADC also features high input impedance for analog signals, as well as programmable gain and offset. Other features include an I2C interface with programmable clock frequencies, internal temperature sensor, and configurable power supply.

Working Principle

Analog-to-digital converters convert analog signals into digital form. An ADC operates by sampling the analog signal and quantizing it into a digital form. The ADC1175CIMTC/NOPB works by using successive approximation register (SAR) architecture to convert the analog signal into a digital form. The device’s SAR architecture uses a voltage ladder to compare the analog input signal with a set of reference voltages. The digital representation of the analog signal is obtained by comparing each reference voltage in the voltage ladder with the input signal, in turn, until all of the reference voltages have been compared.

The reference voltages in the ADC start at ground and increase in steps until they reach the full-scale input range. Once the differential voltage between the input signal and the reference voltage is determined, the ADC outputs a digital code representing the analog signal. The higher the reference voltage, the higher the resolution and the higher the accuracy of the conversion.

The ADC is clocked using an oscillator and a voltage reference. This enables the ADC to precisely measure the analog input signal at each sampling period. The output from the ADC is a series of digital codes representing the analog input signal. This digital code is then sent to the processor for further processing.

Conclusion

The ADC1175CIMTC/NOPB from Texas Instruments is a versatile high-performance analog-to-digital converter (ADC) designed for low-power applications. The ADC adopts a successive approximation register (SAR) architecture and uses a voltage ladder to compare the analog input signal with reference voltages. The output from the ADC is a series of digital codes which can then be sent to the processor for further processing. Overall, the ADC1175CIMTC/NOPB is an ideal choice for applications requiring high sampling rates and low power consumption.

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