Techniques for interpolating two voltages without loading them and without requiring significant power or additional area are described. The techniques include specific topologies for the buffering amplifiers that offer accuracy by cancelling systematic error sources without relying on high gain, thus simplifying the frequency compensation, and reducing power consumption. This can be achieved by biasing the amplifiers from the load current by an innovative feedback structure, which can remove the need for high impedance nodes inside the amplifiers.

Techniques for interpolating two voltages without loading them and without requiring significant power or additional area are described. The techniques include specific topologies for the buffering amplifiers that offer accuracy by cancelling systematic error sources without relying on high gain, thus simplifying the frequency compensation, and reducing power consumption. This can be achieved by biasing the amplifiers from the load current by an innovative feedback structure, which can remove the need for high impedance nodes inside the amplifiers.

A semiconductor device includes first to N-th voltage output circuits each outputting an output voltage and outputs a feedback voltage having a voltage value corresponding to the output voltage, and a differential circuit including first to N-th primary side transistors to which N feedback voltages are input and that individually flow first to N-th currents through a first node, a secondary side transistor that flows a reference current corresponding to a reference voltage through the first node, and a current mirror circuit as an active load. The current mirror circuit includes first to N-th primary side load transistors individually coupled in cascade to the first to N-th primary side transistors, a secondary side load transistor coupled in cascade to the secondary side transistor and generates a voltage at a connection point between the secondary side transistor and the secondary side load transistor as a control voltage.

One or more systems, devices and/or methods of use provided herein relate to a device that can support a signal generation. A current-mode end-to-end signal path can include a digital to analog converter (DAC) operating in current-mode and an upconverting mixer, operating in current-mode and operatively coupled to the DAC. Analog inputs and outputs of the DAC and upconverting mixer can be represented as currents, and the DAC can generate a baseband signal. The DAC and upconverting mixer each can comprise switching transistors of the same type, such as p-type metal-oxide semiconductor (PMOS) switching transistors. In one or more embodiments, a current source and a diode-connected transistor can be arranged in parallel in the current-mode signal path, and the current source passes a static current, while the diode-connected transistor passes both a static current and a dynamic current.

One or more systems, devices and/or methods of use provided herein relate to a baseband filter that can be used in a current-mode end-to-end signal path. The current-mode end-to-end signal path can include a digital to analog converter (DAC) operating in current-mode and an upconverting mixer, operating in current-mode and operatively coupled to the DAC. In one or more embodiments, a device used in the signal path can comprise a baseband filter that receives an input current and outputs an output current. The baseband filter can comprise a feedback loop component having an active circuit branch and a passive circuit branch coupled in a loop. A mirroring device can be coupled to the feedback loop component and can provide an output of the device. Selectively activating the mirroring device can vary gain, such as of the mirroring device.

N (N≥1) input pins each receive input of a digital audio signal or an analog audio signal. When analog audio signals are input to the N input pins, an audio interface circuit applies a bias voltage to each of the N input pins via a bias resistor.

N (N≥1) input pins each receive input of a digital audio signal or an analog audio signal. When analog audio signals are input to the N input pins, an audio interface circuit applies a bias voltage to each of the N input pins via a bias resistor.

A Second-Generation Current Conveyor (CCII) has a three-port network with ports designated as X, Y, and Z, wherein the CCII includes a tunable feedback network. The tunable feedback network may be provided between at least two of the ports, e.g., ports Z and Y. The tunable feedback network may comprise a tunable RC (Resister-Capacitor) network which may be provided by solid-state components such as a MOS (Metal-Oxide Semiconductor) device or a MOS resistor (for the resistive element) and a varactor (for the capacitive element).

An electric circuit according to one embodiment of the present technology includes a target circuit and an auxiliary circuit. The target circuit includes an output portion from which predetermined output power is output, and an application point to which a voltage corresponding to the output power is applied to output the output power. The auxiliary circuit has impedance lower than impedance of the target circuit, and outputs the voltage corresponding to the output power to the application point as an auxiliary voltage.

An electric circuit according to one embodiment of the present technology includes a target circuit and an auxiliary circuit. The target circuit includes an output portion from which predetermined output power is output, and an application point to which a voltage corresponding to the output power is applied to output the output power. The auxiliary circuit has impedance lower than impedance of the target circuit, and outputs the voltage corresponding to the output power to the application point as an auxiliary voltage.