A programmable mixed-signal ASIC for data acquisition systems in medical implants

The ASIC was developed as the central component in an implantable data acquisition system, its first application being as an implant for the acquisition of ECG, heart muscle elasticity and electrolyte composition data of transplanted hearts. It allows daily monitoring of tissue rejection at the patient's home, using an RF link to a small receiver (local host) that forwards the data to a remote hospital computer via a modem.