ADS6445IRGCR Analog to digital converter

 

Analogue-to-Digital Converters (ADCs) allow microprocessor-controlled circuits, Arduinos, Raspberry Pi, and other digital logic circuits to communicate with the real world. In the real world, analog signals have continuously changing values from various sources and sensors to measure sound, light, temperature, or movement. Many digital systems interact with their environment by measuring the analog signals from such transducers. There are different types of ADC when it comes to structuring. The ADS6445IRGCR is a pipeline structured ADC. Pipeline converters determine the digital world through under-sampling with sample/gain algorithm topology or larger cycle-latency.


 

The ADS6445IRGCR is a high-performance 14-bit pipeline dual-channel A-D converters. The ADS6445IRGCR offers a variety of sampling rates, such as 125/105/80/65 Mega samples per second. The ADS6445IRGCR comes in a compact 48-pin QFN package (7mm × 7mm) with high system integration density. This compact packaging of ADS6445IRGCR is only possible because of Serial Low Voltage Differential Signaling (LVDS) data outputs that reduce interface lines. The ADS6445IRGCR includes a 3.5 dB coarse gain option that can be used to improve spurious-free dynamic range (SFDR) performance with little degradation in signal-to-noise ratio (SNR). In addition to the coarse gain, good gain options exist in the ADS6445IRGCR, programmable in 1dB steps up to 6dB. For convenience, The ADS6445IRGCR also includes the traditional 1-wire interface used at lower sampling frequencies.

Compared with different alternatives available in the market, the ADS6445IRGCR has a few distinct advantages and some drawbacks. The ADS6445IRGCR structure falls into the pipeline category of ADC. The ADS6445IRGCR has one of the fastest sampling rates, up to 1 GHz second only to Flash type ADC. There is usually a trade-off between sampling rate and bit resolution. The ADS6445IRGCR offers a bit resolution of up to 16 Bits which is when compared to other ADCs. However, if a specific application requires a fast sampling rate with minimal bit resolution, then pipeline structured ADC the ADS6445IRGCR is the most suitable candidate.

A few distinct features/Advantages that gives The ADS6445IRGCR an edge over its competitors include

·         14-Bit Resolution with No Missing Codes

·         Simultaneous Sample and Hold

·         Serialized LVDS Outputs with Programmable Internal Termination option

·         Internal Reference with External Reference support

·         No external decoupling is required for references

 

Due to these characteristics of the ADS6445IRGCR, they are used in various applications that require fast sampling rates. These applications include Medical Imaging (Oscilloscopes), Diversity Receivers,  Base station If receivers, and test pieces of equipment

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