Amplifier circuit and ultrasonic probe
US10448923B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2014 |
| Grant date | Oct 22, 2019 |
| Priority date | — |
| Expiry date | Jul 11, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/017509
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Amplification of a signal by a small circuit size and reduction of a power are achieved.A current controlling current source unit 53 changes an outputting current based on a transition time setting signal tp. A current controlling current source unit 54 changes a drawing current based on a transition time setting signal tn. An amplitude control unit 55 changes a power source voltage supplied to the current controlling current source unit 53 and changes amplitude of a voltage generated by a current outputted from the current controlling current source unit 53, based on amplitude setting signal ap. An amplitude control unit 56 changes a power source voltage supplied to the current controlling current source unit 54 and changes amplitude of a voltage generated by the current drawn by the current controlling current source unit 54, based on amplitude setting signal an. The buffer unit 57 drives a load in accordance with the current outputted from the current controlling current source unit 53 and the current drawn from the current controlling current source unit 54.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.