Abstract: A first transconductance cell having a differential input voltage ?V1 and a forced output current ?I1, has a bias set by a feedback loop. A second transconductance cell having a differential input voltage ?V2 and using the same biasing as the first cell has analytically identical transconductance. The second transconductance cell produces an output current ?I2 dependent on the product of the output current ?I1 of the first transconductance cell and the quotient of the second differential input voltage ?V2, and the first differential input voltage ?V1. The adaptive transconductance cells can be used to generate mathematic functions such as multiplication and division.

Abstract: A first transconductance cell having a differential input voltage ?V1 and a forced output current ?I1, has a bias set by a feedback loop. A second transconductance cell having a differential input voltage ?V2 and using the same biasing as the first cell has analytically identical transconductance. The second transconductance cell produces an output current ?I2 dependent on the product of the output current ?I1 of the first transconductance cell and the quotient of the second differential input voltage ?V2, and the first differential input voltage ?V1. The adaptive transconductance cells can be used to generate mathematic functions such as multiplication and division.

Abstract: A method and a system for increasing the open loop gain of linear regulators are presented. A linear regulator to derive an output voltage from an input voltage is described. The linear regulator contains an amplifier to derive an amplifier output signal from an amplifier input signal, and a pass device to convert the amplifier output signal into the output voltage. The linear regulator has a positive feedback loop using a positive feedback gain ?, and a negative feedback loop using a negative feedback gain ?. In addition, the linear regulator has a combining unit to determine the amplifier input signal from the input voltage, from the positive feedback signal and from the negative feedback voltage. A transfer function of the linear regulator exhibits a first and a second pole at a first frequency wp1 and at a second frequency wp2, respectively.

Abstract: A method and a system for increasing the open loop gain of linear regulators is presented. A linear regulator configured to derive an output voltage from an input voltage is described. The linear regulator comprises an amplifier configured to derive an amplifier output signal from an amplifier input signal, and a pass device configured to convert the amplifier output signal into the output voltage. The linear regulator comprises a positive feedback loop using a positive feedback gain ?, and a negative feedback loop using a negative feedback gain ?. In addition, the linear regulator comprises a combining unit configured to determine the amplifier input signal from the input voltage, from the positive feedback signal and from the negative feedback voltage. A transfer function of the linear regulator exhibits a first and a second pole at a first frequency wp1 and at a second frequency wp2, respectively.