A new apparatus of pure digital medical
amplifier used for clinical and non-clinical
biomedical signal acquisition purposes is disclosed, which include: multiple single-stage amplification buffers connected to
biomedical signal inputs for receiving and buffering various biomedical and reference signals, one or more
high resolution analog-to-
digital converter whose analog inputs connected to the output of said buffers for digitizing biomedical signals, one or more
digital signal controller whose inputs / outputs are connected to said buffers and analog-to-digital
converters for receiving the digitized
biomedical signal data and controlling the
processing and output of said digitized biomedical
signal data according to preset control program or user's commands. By real-time or non-real-time method said
digital signal controller does the following
signal processing on the digitized biomedical
signal data: filtering, compressing, decompressing, encoding, decoding, transferring, storing and retrieving, analyzing, and displaying the required said digitized biomedical signal data. This invention of
amplifier requires only a few electronic components, and yields extremely low
internal noise, extremely
low distortion of analog output, extremely high
external noise rejection and
immunity, extremely high flexibility in filtering frequency setting for various biomedical signals.