A common-source differential power amplifier comprises a compensation circuit, which comprises a first and a second compensation transistors and two signal terminals, a source and a drain of the first compensation transistor are short-circuited and connected to a gate of the second compensation transistor and one signal terminal of the compensation circuit, the source and the drain of the second compensation transistor are short-circuited and connected to the gate of the first compensation transistor and the other signal terminal of the compensation circuit, the two signal terminals of the compensation circuit are further respectively connected to two differential signal input terminals of the common-source differential power amplifier directly or via a capacitor, where the first and second compensation transistors in the same compensation circuit are both NMOS transistors or both PMOS transistors. An electronic device including the power amplifier is also disclosed.

A common-source differential power amplifier comprises a compensation circuit, which comprises a first and a second compensation transistors and two signal terminals, a source and a drain of the first compensation transistor are short-circuited and connected to a gate of the second compensation transistor and one signal terminal of the compensation circuit, the source and the drain of the second compensation transistor are short-circuited and connected to the gate of the first compensation transistor and the other signal terminal of the compensation circuit, the two signal terminals of the compensation circuit are further respectively connected to two differential signal input terminals of the common-source differential power amplifier directly or via a capacitor, where the first and second compensation transistors in the same compensation circuit are both NMOS transistors or both PMOS transistors. An electronic device including the power amplifier is also disclosed.

The disclosure relates to an alternating current (AC) coupling circuit including first and second capacitors having first and second input terminals configured to receive an input differential signal and generate an output differential signal at first and second output terminals of the first and second capacitors. The AC coupling circuit further includes a baseline wander correction circuit configured to make the output differential signal resistant to baseline wander due to the input differential signal including one or more time intervals of unbalanced data. The baseline wander correction circuit includes a differential difference amplifier (DDA) having a first differential input configured to receive the input differential signal, a differential output configured to generate a compensation differential signal, and a second differential input configured to receive the compensation differential signal. The compensation differential signal is applied to the output terminals of the first and second capacitors via a pair of resistors, respectively.

A transconductor circuitry (10) with adaptive biasing comprises a first input terminal (ElOa) to apply a first input signal (inp), and a second input terminal (ElOb) to apply a second input signal (inn). A control circuit (200) is configured to control a first controllable current source (110) in a first current path (101) and a second controllable current source (120) in a second current path (102) in response to at least one of a first potential of a first node (N1) of the first current path (101) and a second potential of a second node (N2) of the second current path (102). The first node (N1) is located between a first transistor (150) and the first controllable current source (110), and the second node (N2) is located between a second transistor (160) and the second controllable current source (120).

A variable current trans-impedance amplifier (TIA) for an ultrasound device is described. The TIA may be coupled to an ultrasonic transducer to amplify an output signal of the ultrasonic transducer representing an ultrasound signal received by the ultrasonic transducer. During acquisition of the ultrasound signal by the ultrasonic transducer, one or more current sources in the TIA may be varied.

A variable current trans-impedance amplifier (TIA) for an ultrasound device is described. The TIA may be coupled to an ultrasonic transducer to amplify an output signal of the ultrasonic transducer representing an ultrasound signal received by the ultrasonic transducer. During acquisition of the ultrasound signal by the ultrasonic transducer, one or more current sources in the TIA may be varied.

In accordance with aspects of the present invention, embodiments of a photodiode circuit. A photodiode circuit according to some embodiments includes a transimpedance amplifier; a resistor coupled across the transimpedance amplifier; and an amplifier stage coupled to receive an output from the transimpedance amplifier, wherein the photodiode circuit provides dynamic range across a current range of the photodiode circuit. In some embodiments, the transimpedance amplifier includes a receive signal strength indicator that provides a DC current signal to a tail of a first amplifier stage, the tail providing a current that is adaptively related to the DC current. In some embodiments, the resistor is a shielded resistor. In some embodiments, the adaptive current sink includes a plurality of switchable parallel current sinks.

A variable current trans-impedance amplifier (TIA) for an ultrasound device is described. The TIA may be coupled to an ultrasonic transducer to amplify an output signal of the ultrasonic transducer representing an ultrasound signal received by the ultrasonic transducer. During acquisition of the ultrasound signal by the ultrasonic transducer, one or more current sources in the TIA may be varied.

Embodiments relate to systems, methods, and computer-readable media to enable design and creation of receiver circuitry. One embodiment is a receiver apparatus comprising a plurality of receiver arrangements, each receiver arrangement having a sampling circuit and a multi-stage differential amplifier connected to the sampling circuit. Each receiver arrangement is configurable via switches between an amplifying mode and an autozero mode. Control circuitry may select output data from a sampling circuit of one or more receiver arrangements that are not in autozero mode. In various embodiments, settings for individual receiver arrangements may be set based on decision feedback equalization (DFE).

A variable current trans-impedance amplifier (TIA) for an ultrasound device is described. The TIA may be coupled to an ultrasonic transducer to amplify an output signal of the ultrasonic transducer representing an ultrasound signal received by the ultrasonic transducer. During acquisition of the ultrasound signal by the ultrasonic transducer, one or more current sources in the TIA may be varied.