Our company is currently reviewing medical device solutions for cerebral blood flow velocity measurement and embolism detection. We are at the proof-of-concept (POC) stage and have not yet planned a mass production roadmap.
We have selected a TCD probe and plan to transmit pulse waves through the probe and analyze the received Doppler signals. While researching, we found detailed information in the attached datasheet for the STHV748S device and have some questions:
Does the "Digital Input" port refer to the pulse wave input port?
The HVP (High Voltage Positive) and HVM (High Voltage Negative) ports are specified as 0 to +90V and 0 to -90V, respectively. Does the chip generate these voltages internally, or must they be supplied externally?
Is the LVOUT port the output port for the Doppler RX signal after switching?
When interfacing with the TCD probe, there is only one connection port. How should HVP and HVM be connected in this case?
Is this device designed only for single transducer use (1 pin for TX/RX), or does it also support double transducer configurations (separate TX and RX pins)?
We would appreciate any clarification or guidance you can provide.
Thank you for your support.
