Patent ID: 6914822

Claim:
A read-biasing and amplifying system, comprising: a first read-biasing and amplifying circuit; a second read-biasing and amplifying circuit; and a differential amplifier connected between the first circuit and the second circuit; wherein at least one of the first circuit and the second circuit include: an input; an output; a first load having a node; a first control device having a control input and a controlled signal output, wherein the control input of the first control device is coupled to the input, and the controlled signal output of the first control device is coupled to the node of the first load; a second control device having a control input, a controlled signal output, and a signal input, wherein the control input of the second control device is coupled to the controlled signal output of the first control device, the signal input of the second control device is coupled to the input, and the controlled signal output of the second control device is coupled to the output; a second load having a node, wherein the node of the second load is coupled to the output; a third control device having a signal input, wherein the signal input of the third control device is coupled to the output; wherein the second load comprises a fourth control device; wherein the node of the second load is a signal input of the fourth control device; and wherein the first load is a fifth control device, a control input of the fourth control device is coupled to a control input of the fifth control device, and a control input of the third control device is coupled to the output.