Abstract: Amplifier systems for measuring a wide range of current are provided herein. In certain embodiments, an amplifier system includes a controllable sensing circuit, a first amplifier including an output configured to drive a device under test (DUT) through the controllable sensing circuit, and a second amplifier including an input coupled to the controllable sensing circuit and operable to generate a measurement signal indicating an amount of measured current of the DUT. The amplifier system further includes a control circuit operable to control a configuration or mode of the controllable sensing circuit suitable for a particular type of DUT.

Abstract: Transimpedance amplifiers with feedforward current are provided herein. In certain embodiments, an amplifier system includes a transimpedance amplifier that amplifies an input current received at an input to generate an output voltage at an output. The amplifier system further includes a controllable current source that is coupled to the output of the transimpedance amplifier, and operable to provide a feedforward current that changes in relation to the input current of the transimpedance amplifier. By providing a feedforward current in this manner, gain and speed performance of the transimpedance amplifier is enhanced.

Abstract: Amplifier systems for driving a wide range of loads are provided herein. In certain embodiments, an amplifier system includes a voltage output amplifier and a current output amplifier that are electrically coupled in parallel with one another between an input terminal and an output terminal. The amplifier system further includes a control circuit operable to control whether or not the voltage output amplifier and/or current output amplifier drive the output terminal.

Abstract: Transimpedance amplifiers with feedforward current are provided herein. In certain embodiments, an amplifier system includes a transimpedance amplifier that amplifies an input current received at an input to generate an output voltage at an output. The amplifier system further includes a controllable current source that is coupled to the output of the transimpedance amplifier, and operable to provide a feedforward current that changes in relation to the input current of the transimpedance amplifier. By providing a feedforward current in this manner, gain and speed performance of the transimpedance amplifier is enhanced.

Abstract: Amplifier systems for measuring a wide range of current are provided herein. In certain embodiments, an amplifier system includes a controllable sensing circuit, a first amplifier including an output configured to drive a device under test (DUT) through the controllable sensing circuit, and a second amplifier including an input coupled to the controllable sensing circuit and operable to generate a measurement signal indicating an amount of measured current of the DUT. The amplifier system further includes a control circuit operable to control a configuration or mode of the controllable sensing circuit suitable for a particular type of DUT.

Abstract: Amplifier systems for driving a wide range of loads are provided herein. In certain embodiments, an amplifier system includes a voltage output amplifier and a current output amplifier that are electrically coupled in parallel with one another between an input terminal and an output terminal. The amplifier system further includes a control circuit operable to control whether or not the voltage output amplifier and/or current output amplifier drive the output terminal.

Abstract: Apparatus and methods for setting and clamping a node voltage are provided herein. In certain embodiments, a node control circuit includes a setting circuit for setting a voltage of a node based on a set signal. The node control circuit further includes at least one of a p-type follower clamp for clamping the node to an upper voltage limit based on an upper clamping control signal or an n-type follower clamp for clamping the node to a lower voltage limit based on a lower clamping control signal. When including both clamps, the node operates with a voltage level set by the set signal, but saturates at the upper voltage limit established by the upper clamping control signal and at the lower voltage limit established by the lower clamping control signal.