The circuit in this Design Idea realizes a simple, low-cost lock-in amplifier employing an Analog Devices AD630 balanced modulator-demodulator IC (Reference 1). The device uses laser-trimmed thin-film ...

In professional audio, analog interconnections between devices typically use “balanced” interfaces. At the source, a balanced output stage differentially drives two signal wires (theoretically with ...

In high-speed wireless communications systems, signals must be translated in frequency by up-conversion or down-conversion for signal propagation and processing. Traditionally known as mixing, this ...

Error vector magnitude (EVM) is a measure of modulation quality and error performance in complex wireless systems. It provides a method to evaluate the performance of ...