The graph shown on this slide breaks down the different types of ultrasound systems in the market. High-end systems typically used in cardiology have the highest channel count. As can be seen, they usually begin at around 128 channels per system. In contrast, portable systems are typically less than 64 channels. Designers of ultrasound systems are often faced with the challenge of balancing the tradeoffs between the noise and power, and this comes into effect in the analog front end design. The high-end system will prioritize low noise performance in the AFE over power, because designers want minimal noise of their system for better image quality. The low noise performance of the AFE would need to be around 0.7 nV/rtHz. The portable system is more dependent on the battery life and is very lean in power, pushing for lower than 120 mW per channel. Even lower power than that are handheld systems, which are willing to sacrifice some of the noise performance from the AFE to increase the battery life.