An ultrasound probe comprising: - a digital microbeamformer; and - an array transducer adapted to scan a target region with elements of the array under the control of the digital microbeamformer, wherein the digital microbeamformer comprises a plurality of transmitters that are coupled to the array elements and adapted to produce a succession of transmit pulse events, wherein the digital microbeamformer further comprises: - a plurality of amplifiers coupled to the elements of the array and arranged to receive analog echo signals from elements of the array during a receive period, said amplifiers arranged to provide a plurality of amplified analog echo signals; - a plurality of ADCs coupled to the amplifiers and adapted to receive the amplified analog echo signals and convert the amplified analog echo signals to digital echo signals; - a plurality of digital delay circuits that are coupled to the ADCs and adapted to produce a plurality of selectably delayed digital echo signals; - a plurality of digital summers that are coupled to the plurality of digital delay circuits, adapted to receive the plurality of selectably delayed digital echo signals; and a serializer; characterized in that: the plurality of selectably delayed digital echo signals are multiline signals; the plurality of digital summers are adapted to produce a plurality of digital multiline echo signals by summing the corresponding multiline signals of the different channels; the plurality of ADCs comprise a plurality of successive approximation type ADCs, the plurality of digital summers are adapted to produce the plurality of digital multiline echo signals in response to a single transmit pulse event in the succession of transmit pulse events, and the serializer provides a serial data stream from the plurality of digital multiline echo signals. - a digital microbeamformer; and - an array transducer adapted to scan a target region with elements of the array under the control of the digital microbeamformer, wherein the digital microbeamformer comprises a plurality of transmitters that are coupled to the array elements and adapted to produce a succession of transmit pulse events, - a plurality of amplifiers coupled to the elements of the array and arranged to receive analog echo signals from elements of the array during a receive period, said amplifiers arranged to provide a plurality of amplified analog echo signals; - a plurality of ADCs coupled to the amplifiers and adapted to receive the amplified analog echo signals and convert the amplified analog echo signals to digital echo signals; - a plurality of digital delay circuits that are coupled to the ADCs and adapted to produce a plurality of selectably delayed digital echo signals; - a plurality of digital summers that are coupled to the plurality of digital delay circuits, adapted to receive the plurality of selectably delayed digital echo signals; and a serializer; the plurality of selectably delayed digital echo signals are multiline signals; the plurality of digital summers are adapted to produce a plurality of digital multiline echo signals by summing the corresponding multiline signals of the different channels; the plurality of ADCs comprise a plurality of successive approximation type ADCs, the plurality of digital summers are adapted to produce the plurality of digital multiline echo signals in response to a single transmit pulse event in the succession of transmit pulse events, and the serializer provides a serial data stream from the plurality of digital multiline echo signals.