Abstract: A receiver and a transmitter for a MRI system and a method for converting a MR signal to digital data for use by a MRI system control/console and a method for generating RF excitation signals from the digital output of a MRI system control/console. The receiver and the transmitter for a MRI system adapted to work at field strengths up to about 8 T. The receiver has improved dynamic range and the capacity to work with MR signals that have a low signal to noise ratio. The receiver and transmitter enable the bandwidth to be varied over the range from about 2 kHz to about 1.5 MHz. The receiver and transmitter can accommodate a frequency range from about 10 MHz to about 400 MHz. Furthermore, the receiver and the transmitter have improved image rejection.