In order to make it possible to obtain high quality images by reducing the noise by reducing the interference between different sub arrays by using the ultrasonic probe of the ultrasonic diagnostic apparatus without increasing the wiring area, an ultrasonic probe is provided An ultrasonic diagnostic apparatus includes an ultrasonic probe that transmits an ultrasonic wave toward a subject and receives a reflected wave from the subject, and a control unit that controls transmission and reception of ultrasonic waves from the ultrasonic probe, And a main body unit which receives a reception signal received by an ultrasonic probe of a reflected wave from a specimen to generate an ultrasonic image of a subject and displays the ultrasonic image on a display screen, wherein the ultrasonic probe transmits and receives ultrasonic signals A plurality of sub-arrays each having a plurality of element circuits, and a reference power supply, and each of the plurality of sub arrays and the plurality of reference power supplies are associated one by one.超音波診断装置の超音波プローブで、配線面積を増大させることなく異なるサブアレイ間の干渉を低減してノイズを低減して高品質な画像を得ることを可能にするために、超音波プローブを備えた超音波診断装置を、被検体に向けて超音波を送信して被検体からの反射波を受信する超音波プローブと、超音波プローブからの超音波の送信と受信とを制御すると共に、被検体からの反射波を超音波プローブで受信した受信信号を受けて被検体の超音波画像を生成して表示画面上に表示する本体装置部とを備え、超音波プローブは、超音波信号を送受信する複数の素子回路を有するサブアレイと、基準電源とをそれぞれ複数有し、複数のサブアレイと複数の基準電源とをそれぞれ1対1に対応させて構成した。
