Circuit for reading non-volatile memories

A reading circuit for reading a plurality of memory cells arranged in rows and columns, each memory cell having an output terminal for providing an output current and a control terminal for receiving a control voltage for controlling the output current, the reading circuit comprising:

• a feedback circuit connected to the output terminal and to the control terminal of a selected memory cell for generating the control voltage from a reference signal and from the output current, said feedback circuit comprising
• a current generator for generating the reference signal,
• a current amplifier having a first terminal for receiving a current-error signal derived from the reference signal and from the output current, and a second terminal for supplying an amplified current to generate the control voltage,
• a comparison node between said current generator and the output terminal of the selected memory cell, the comparison node supplies to the first terminal the current-error signal derived from a difference between the reference signal and a first current, and
• a current mirror between the comparison node and the output terminal of the selected memory cell for generating the first current correlated with the output current.

An integrated circuit comprising:

• a plurality of non-volatile memory cells arranged in rows and columns, each memory cell having an output terminal for providing an output current and a control terminal for receiving a control voltage for controlling the output current;
• and
• a reading circuit connected to said plurality of memory cells and comprising
• a feedback circuit connected to the output terminal and to the control terminal of a selected memory cell for generating the control voltage from a reference signal and from the output current,
• said feedback circuit comprising a current amplifier having a first terminal for receiving a current-error signal derived from the reference signal and from the output current, and a second terminal for supplying an amplified current to generate the control voltage.