Sense amplifier circuit

A sense amplifier circuit comprising:

• a first-sensed-output-terminal;
• a second-sensed-output-terminal;
• a first-input-voltage-terminal;
• a second-input-voltage-terminal;
• a third-input-voltage-terminal;
• a fourth-input-voltage-terminal;
• a common-mode-voltage-node;
• first-, second-, third- and fourth-amplification-blocks, each amplification-block comprising:
• an amplification-block-input-node,
• an amplification-block-output-node,
• an amplification-block-control-node,
• an amplification-block-transistor comprising:
• a first-conduction-channel-terminal,
• a second-conduction-channel-terminal that is connected to the amplification-block-output-node, and
• a control-terminal that is connected to the amplification-block-control-node;
• an amplification-block-resistor connected in series between the amplification-block-input-node and the first-conduction-channel-terminal,
• a first-bias-voltage-source connected to the amplification-block-control-nodes of the first- and third-amplification-blocks;
• a second-bias-voltage-source connected to the amplification-block-control-nodes of the second- and fourth-amplification-blocks;
• a first-common-mode-voltage-resistor connected in series between the first-sensed-output-terminal and the common-mode-voltage-node;
• and
• a second-common-mode-voltage-resistor connected in series between the second-sensed-output-terminal and the common-mode-voltage-node,
• wherein:
• the amplification-block-output-nodes of the first- and second-amplification-blocks are connected to the first-sensed-output-terminal;
• the amplification-block-output-nodes of the third- and fourth-amplification-blocks are connected to the second-sensed-output-terminal;
• the amplification-block-input-node of the first-amplification-block is connected to the first-input-voltage-terminal;
• the amplification-block-input-node of the second-amplification-block is connected to the second-input-voltage-terminal;
• the amplification-block-input-node of the third-amplification-block is connected to the third-input-voltage-terminal;
• and
• the amplification-block-input-node of the fourth-amplification-block is connected to the fourth-input-voltage-terminal.