摘要:
The present invention provides a synchronous-type semiconductor integrated circuit with high reliability. In the semiconductor integrated circuit, a delay circuit is connected to a data line. The semiconductor integrated circuit includes a first storage circuit 101 and a second storage circuit 102 that respectively store logic levels of an input to the delay circuit and an output of the delay circuit when a logic level of a clock line is changed, and a determination circuit 104 that determines whether or not the results of the first storage circuit 101 and the second storage circuit 102 coincide or not. Even if a transistor or a wiring that constitutes the semiconductor integrated circuit has been degraded due to secular change or the like, a possibility of an anomaly or a failure in one of the operation circuits caused by the degradation can be predicted before the anomaly or the failure occurs.
摘要:
In the signal quality measurement device of the present invention, a spectrum measurement circuit (101) includes: an N-(where N is an integer equal or greater than 2) phase clock generation circuit (304) for supplying phase-modulated signals in which the phase of a clock signal is shifted by a phase modulation amount each time the settings of the phase modulation amount are switched; a mixer circuit (303) for taking the product of a measured signal that is supplied from a transmitter and the phase-modulated signals that are supplied from the N-phase clock generation circuit (304); an average value output circuit (305) for supplying an average voltage value of the output signal of the mixer circuit (303); a memory (307) for storing the average voltage value supplied from the average value output circuit (305) for each phase modulation amount of the N-phase clock generation circuit (304); and arithmetic unit (308) for using the average voltage value for each phase modulation amount of the N-phase clock generation circuit (304) that is stored in memory (307) to calculate the signal strength of the measured signal.
摘要:
Provided is a modulation device including a signal selection circuit selecting two carrier signals from a plurality of carrier signals having the same frequency and the same phase difference according to a defined control signal and outputting the selected carrier signals, and a phase interpolator adjusting the phase in smaller units than the phase difference between the plurality of carrier signals according to the control signal and modulating the frequency or the phase of the carrier signal into a baseband signal based on the carrier signals selected by the signal selection circuit to generate a carrier wave signal.
摘要:
[PROBLEMS] To provide, for example, a pulse input type power amplifying apparatus that can be operated at low voltage and low power, effectively suppressing generation of harmonic component. [MEANS FOR SOLVING THE PROBLEMS] The amplifying apparatus includes at least two amplification circuits, one and other amplification circuits, composed of multiple amplifiers whose output sides are connected to each other, driven at the same frequency. The multiple amplifiers forming the one amplification circuit are configured with a first inverting amplifier M12 inputting and amplifying a reference pulse, and a second inverting amplifier M11 to which an inverted pulse formed by shifting and inverting the phase of the reference pulse is inputted. The other amplification circuit is configured with the first inverting amplifier M14 and the second inverting amplifier M13 to each of which other wide pulse with a width greater than that of the reference pulse is commonly inputted.