Programmable Mixed-Signal Devices * Signal processing: GreenPAK devices offer a variety of digital signal processing resources, such as LUTs, ASMs, and DFFs, which can also be combined with analog resources such as OPAMPs and PWMs so they can be used for mixed signal treatment applications. * Low latency: because medical applications can require real-time control or monitoring, low-latency signal paths are mandatory. In this context, both mixed-signal ICs offer very low signal propagation delays. * Security and reliability: medical applications must be secure and reliable. Because the analyzed devices do not have CPU cores and programmable firmware, they cannot be hacked. * Low power consumption and small form factor: some medical devices can be battery powered or need to operate on low Fig. 1 - Block diagram of an analog front end for heart rate monitor. Fig. 2 - Structure of an analog front end for an electrocardiogram monitor. 18 www.medicaldesignbriefs.com Medical Design Briefs, May 2024http://www.medicaldesignbriefs.com