Patent ID: 11863133
Assignee: BFLY OPERATIONS, INC
Field: Medical technology (Instruments)
Classification: CPC H  A  G | IPC A  G  H

Claim 19:
20. An ultrasound apparatus, comprising:
an ultrasound sensor; and
a variable current trans-impedance amplifier (TIA) coupled to the ultrasound sensor and configured to receive and amplify an output signal from the ultrasound sensor, the variable current TIA being a multi-stage operational amplifier having:
a first stage;
a last stage;
a first variable current source coupled to the first stage; and
a second variable current source coupled to the last stage; and
a control circuit coupled to the first variable current source and the second variable current source and configured to simultaneously increase a first amount of current through the first variable current source and decrease a second amount of current through the second variable current source after a time interval.