CHEN, KAILIANG,陈凯亮,陳凱亮,CHEN, CHAO,陈超,陳超,FIFE, KEITH G.,法菲 凯斯 Ｇ,法菲 凱斯 Ｇ
申请号：
TW108140577
公开号：
TW202034624A
申请日:
2019.11.08
申请国别(地区):
TW
年份:
2020
代理人:
摘要：
A variable-current trans-impedance amplifier (TIA) for an ultrasound device is described. The TIA may be coupled to an ultrasonic transducer to amplify an output signal of the ultrasonic transducer representing an ultrasound signal received by the ultrasonic transducer. During acquisition of the ultrasound signal by the ultrasonic transducer, one or more current sources in the TIA may be varied. The variable-current trans-impedance amplifier may include multiple stages, including a first stage having NP transistor pairs configured to receive an input signal and produce a single-ended amplified signal.一種用於超音波裝置的可變電流的跨阻抗放大器(TIA)被描述。所述TIA可以耦接至一超音波換能器以放大所述超音波換能器的一代表藉由所述超音波換能器接收到的一超音波信號的輸出信號。在所述超音波信號藉由所述超音波換能器的獲取期間，在所述TIA中的一或多個電流源可被改變。所述可變電流的跨阻抗放大器可包含多個級，其包含一具有被配置以接收一輸入信號且產生單端放大的信號的NP電晶體對的第一級。
