ADC78H90CIMTX

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Analog-to-digital converters (ADCs) transduce analog signals, such as waveforms or audio clips, into digital, which can then be manipulated or stored digitally. The ADC78H90CIMTX data acquisition component from Texas Instruments is designed to satisfy demanding general-purpose mixed-signal data acquisition applications. The ADC78H90CIMTX is a flash type high-speed, 8-bit analog-to-digital converter that offers the industry-leading combination of speed, accuracy and low power consumption. This device operates from a single power supply ranging 2.7 – 5.5V and uses a differential input signal range up to ±200mV. It has ±50mV of absolute accuracy and voltage reference accuracy of ±0.3%, while consuming only 15/20mA of quiescent current. Additionally, the ADC78H90CIMTX has a robust on-chip sample-and-hold circuit and is ideal for high-speed data acquisition systems. It has a sampling rate of 300ksps and supports a conversion clock of up to 10MHz. The ADC78H90CIMTX includes a reference bypass switch for reducing the settling time of the S/H, which is critical for high-precision applications. This device also uses an on-chip voltage reference which ensures low drift and low noise.

The main application field for the ADC78H90CIMTX includes industrial automation, medical instrumentation, audio and video systems, military and aerospace and in any datalogging or data acquisition system. It is especially desirable in applications that require a low-power, high-resolution alternative to higher speed analog-digital-converters. In medical instrumentation applications, it can be used in medical imaging systems, medical analyzers, medical monitors, medical robotics and other medical equipment which need a unified data interface. This device is also suitable for audio and video systems as it requires fast, high-resolution data acquisition. It can be used in any system that requires tracking of very fine details such as in military and aerospace applications.

The main principle underlying the ADC78H90CIMTX\'s operation involves taking analog signals in via its differential input, converting the input signal into digital representation using its 8-bit conversion, and then outputting the digital representation onto its serial output port. To ensure a high-precision conversion, the device incorporates a sample-and-hold circuit to stabilize its input signals. In the ADC78H90CIMTX, the sample-and-hold circuit is integrated, thus allowing for higher resolution and lower noise. When an analog signal is input into the ADC78H90CIMTX, the sampling and hold control logic first sets the reference bypass switch to optimization, which allows for optimum settling time. Once the reference bypass sets, the sampling and hold control logic sets the ADC data input to the value of the analog signal. This data is then converted into a digital representation through the 8-bit A/D conversion process, which is then output on the serial port.

The ADC78H90CIMTX from Texas Instruments is a low-power, extremely fast and high-resolution data acquisition component, which can be used to satisfy the demanding requirements of many applications in industrial automation, military and aerospace, medical instrumentation and audio and video systems. The device is easy to use and can be configured to very specific tasks that require precise level of accuracy. Furthermore, its integrated sample-and-hold circuit ensures low-noise and high-resolution data acquisition while its reference bypass switch allows for quick settling of the sampling and hold. This makes the ADC78H90CIMTX an ideal choice for any datalogging or data acquisition system that requires a robust and precise analog-to-digital conversion.

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