AD678KNZ

The AD678KNZ Analog to Digital Converter (ADC) belongs to the data acquisition class and comes with a range of different features. Instead of merely converting a single analog signal into a digital format, the AD678KNZ can simultaneously convert three separate channels of analog signals. This is achieved by means of its multiplexer which can select either a single input or a combination of inputs from a variety of sources, be it differential or single-ended inputs from voltage, current, or thermocouple thermistors. It can also accept a range of external references like voltage divider, temperature transducer and bridge differential inputs. As for the output formats, the AD678KNZ can provide both a serial (9-bits) or parallel (8-bits) output.

The key component of the AD678KNZ is its internal ADC which converts the analog signals into digital signals. The ADC uses a sigma-delta modulator but with output sampling at around 500kHz and a maximum throughput of 200ksps. This ensures a high level of accuracy and resolution when it comes to converting analog signals into digital formats. Additionally, the ADC also features an integrated digital filter which smoothens the digitized signal to reduce noise and distortion. The ADC is also supplied with external references, so the ADC will still operate accurately even in the presence of power supply and system noise.

When it comes to the operation of the AD678KNZ, the process is straightforward. First, the external reference is connected to the device. The outside voltage reference will adjust its value so that the output results are accurate. Second, the multiplexer will select the appropriate input format (voltage, current, thermistor or thermocouple) and the appropriate number of inputs. Third, the ADC will convert the analog signal into its digital counterpart with the help of sigma-delta modulator and the digital filter. Finally, it will output the result in either serial (9-bits) or parallel (8-bits) format.

The AD678KNZ is a versatile device as it can be used in a variety of applications. It can be used in medical testing, electronic metering and instrumentation, audio, automotive and consumer electronics. One of its main uses is in medical testing and instrumentation as it can be used to monitor patient\'s vital signs like blood pressure, temperature and pulse rate. It is also widely used in electronic metering applications for measuring voltage, current, and power inputs. The ADC\'s low noise and high accuracy help to ensure accurate results even when presented with noisy signals and varying temperatures.

The AD678KNZ Analog to Digital Converter is an essential part of data acquisition system and offers a wide range of features for its size and cost. With its high accuracy and low noise performance, it offers a versatile and cost effective solution for many applications.