Abstract: A semiconductor device includes a first region and a second region, and the second region surrounds the first region. The semiconductor device includes at least one electronic unit, a redistribution structure, a plurality of first pads, and a plurality of second pads. The redistribution structure may be electrically connected to at least one electronic unit. A plurality of first pads are arranged on the redistribution structure and correspondingly to the first region. There is a first pitch between two adjacent first pads. A plurality of second pads are arranged on the redistribution structure and correspondingly to the second region. There is a second pitch between two adjacent second pads, so that the first pitch is smaller than the second pitch.

Abstract: The present disclosure provides a voltage-controlled oscillator for a phase-lock loop circuit. The voltage-controlled oscillator is used to receive a control voltage and generate a clock signal, and includes a voltage-to-current device, a process compensation device, a subtraction unit and a clock signal generating module. The voltage-to-current device is used to generate a linear current according to the control voltage. The process compensation device is used to generate a compensation current according to the control voltage. The compensation current is proportional to a transistor operation speed corresponding to a process offset. The subtraction unit is electrically connected to the voltage-to-current device and the process compensation device, and is used to subtract the compensation current from the linear current to generate the control current.

Abstract: A signal processing system includes an adjustable filter, a signal difference calculating unit, a determining unit and a selecting unit. The adjustable filter is configured to receive a digital signal outputted from an analog-to-digital converter, and filter the digital signal to generate a filtered signal. The signal difference calculating unit is configured to calculate and output a signal difference value between the digital signal and the filtered signal. The determining unit is configured to compare the signal difference value with a predetermined threshold value, to generate a comparison result, and generate a selection signal and a bandwidth adjustment signal according to the comparison result. The selecting unit is configured to receive the digital signal and the filtered signal, and output one of the digital signal and the filtered signal according to the selection signal. The bandwidth of the adjustable filter can be adjusted according to the bandwidth adjustment signal.

Abstract: A signal processing system includes an adjustable filter, a signal difference calculating unit, a determining unit and a selecting unit. The adjustable filter is configured to receive a digital signal outputted from an analog-to-digital converter, and filter the digital signal to generate a filtered signal. The signal difference calculating unit is configured to calculate and output a signal difference value between the digital signal and the filtered signal. The determining unit is configured to compare the signal difference value with a predetermined threshold value, to generate a comparison result, and generate a selection signal and a bandwidth adjustment signal according to the comparison result. The selecting unit is configured to receive the digital signal and the filtered signal, and output one of the digital signal and the filtered signal according to the selection signal. The bandwidth of the adjustable filter can be adjusted according to the bandwidth adjustment signal.

Abstract: A supporting frame assembly includes a first module and a second module pivotally connected to the first module. The first and second modules each include a main body, a pair of aligned knuckles formed on one long side of the main body, a pair of aligned pivot pins formed on an opposite long side of the main body, a lock portion formed between the pivot pins, and a sliding block slidably connected to the top of the main body. The sliding block of the first module is movable along the top of the main body between a first position and a second position with respect to the lock portion of the second module. When the sliding block of the first module is located at the second position, the sliding block is fixedly engaged with the lock portion of the second module to limit rotation between the first and second modules.

Abstract: A supporting frame assembly includes a first module and a second module pivotally connected to the first module. The first and second modules each include a main body, a pair of aligned knuckles formed on one long side of the main body, a pair of aligned pivot pins formed on an opposite long side of the main body, a lock portion formed between the pivot pins, and a sliding block slidably connected to the top of the main body. The sliding block of the first module is movable along the top of the main body between a first position and a second position with respect to the lock portion of the second module. When the sliding block of the first module is located at the second position, the sliding block is fixedly engaged with the lock portion of the second module to limit rotation between the first and second modules.

Abstract: A galvanically-isolated device and a method for fabricating the same are provided. The galvanically-isolated device includes a lead frame including a first die-attach pad, a first lead and a second lead. A substrate is disposed on the first die-attach pad. A high-voltage semiconductor capacitor formed on the substrate includes an interconnection structure. The interconnection structure includes an inter-metal dielectric layer structure. A first plate, a second plate and a third plate are formed on the inter-metal dielectric layer structure, separated from each other. The first plate, the second plate and a first portion of the inter-metal dielectric layer structure are composed of a first capacitor. The first plate, the third plate and a second portion of the inter-metal dielectric layer structure are composed of a second capacitor connected in series with the first capacitor.

Abstract: An electronic device includes an enclosure and a locking assembly. The locking assembly includes a fixing sleeve including a fixing end hermetically fixed to the enclosure, and an opening end away from the enclosure, and a locking bracket. The locking bracket is attached to the fixing sleeve and defines a through hole defining a passing portion and at least one locking portion communicating with each other. The electronic device is position to a fastener by the fastener passing through the passing portion and being positioned in the locking portion of the through hole.

Abstract: A galvanically-isolated device and a method for fabricating the same are provided. The galvanically-isolated device includes a lead frame including a first die-attach pad, a first lead and a second lead. A substrate is disposed on the first die-attach pad. A high-voltage semiconductor capacitor formed on the substrate includes an interconnection structure. The interconnection structure includes an inter-metal dielectric layer structure. A first plate, a second plate and a third plate are formed on the inter-metal dielectric layer structure, separated from each other. The first plate, the second plate and a first portion of the inter-metal dielectric layer structure are composed of a first capacitor. The first plate, the third plate and a second portion of the inter-metal dielectric layer structure are composed of a second capacitor connected in series with the first capacitor.

Abstract: A housing includes a cover, a plurality of foot pads and a plurality of couplers. Each of the plurality of foot pads is fixed on a corresponding one of the couplers and each of the couplers is pivotable about the cover. The cover defines a plurality of first receiving portions and a plurality of second receiving portions for receiving the plurality of couplers and the plurality of foot pads. Each of the plurality of foot pads and each of the plurality of couplers rotates relative to the cover to selectively receive the foot pad and the coupler in the first receiving portion and in the second receiving portion, so as to suspend the housing from a wall and to place the housing on a supporting surface.

Abstract: A housing includes a cover, a plurality of foot pads and a plurality of couplers. Each of the plurality of foot pads is fixed on a corresponding one of the couplers and each of the couplers is pivotable about the cover. The cover defines a plurality of first receiving portions and a plurality of second receiving portions for receiving the plurality of couplers and the plurality of foot pads. Each of the plurality of foot pads and each of the plurality of couplers rotates relative to the cover to selectively receive the foot pad and the coupler in the first receiving portion and in the second receiving portion, so as to suspend the housing from a wall and to place the housing on a supporting surface.

Abstract: An electronic device includes an enclosure and a locking assembly. The locking assembly includes a fixing sleeve including a fixing end hermetically fixed to the enclosure, and an opening end away from the enclosure, and a locking bracket. The locking bracket is attached to the fixing sleeve and defines a through hole defining a passing portion and at least one locking portion communicating with each other. The electronic device is position to a fastener by the fastener passing through the passing portion and being positioned in the locking portion of the through hole.

Abstract: The invention provides a microphone circuit. In one embodiment, the microphone circuit comprises a transducer, a biasing resistor, a pre-amplifier, and a switch circuit. The transducer is coupled between a ground and a first node for converting a sound into a voltage signal output to the first node. The biasing resistor is coupled between the ground and the first node. The pre-amplifier is biased with a biasing voltage and coupled between the first node and a second node, and amplifies the voltage signal to obtain an output signal at the second node. The switch circuit is coupled between the first node and the ground, couples the first node to the ground when the microphone circuit is reset, and decouples the first node from the ground after a voltage status of the microphone circuit is stable, thus clamping a voltage of the first node to the ground to prevent generation of a popping noise when the microphone circuit is reset.

Abstract: A multi-channel audio playback apparatus including a channel interface, a first switching amplifier and a second switching amplifier is provided. The channel interface is used to receive multi-channel digital data and generate first channel digital data and second channel digital data. The first switching amplifier is used to convert the first channel digital data into a first pulse width modulation (PWM) signal according to a first reference signal with a first frequency. The second switching amplifier is used to convert the second channel digital data into a second PWM signal according to a second reference signal with a second frequency. The second frequency is different from the first frequency.

Abstract: A phase lock loop (PLL) circuit is provided. A voltage controlled oscillator (VCO) generates an output clock signal based on a control voltage. A controller provides a first digital control word, a second digital control word and a loop factor. A frequency modifier is coupled to the output clock signal, controlled by the controller to divide the output clock signal by the loop factor to generate a feedback frequency. A charge pump is controlled by the up signal and down signal to generate a charge pump current, comprising a first digital to analog converter (DAC) to generate a first current based on the first digital control word when the up signal is asserted. A second DAC generates a second current based on a second digital control word when the down signal is asserted. The controller defines a first relationship between the first digital control word and the loop factor, and the controller defines a second relationship between the second digital control word and the loop factor.

Abstract: The invention provides a microphone circuit. In one embodiment, the microphone circuit comprises a transducer, a biasing resistor, a pre-amplifier, and a switch circuit. The transducer is coupled between a ground and a first node for converting a sound into a voltage signal output to the first node. The biasing resistor is coupled between the ground and the first node. The pre-amplifier is biased with a biasing voltage and coupled between the first node and a second node, and amplifies the voltage signal to obtain an output signal at the second node. The switch circuit is coupled between the first node and the ground, couples the first node to the ground when the microphone circuit is reset, and decouples the first node from the ground after a voltage status of the microphone circuit is stable, thus clamping a voltage of the first node to the ground to prevent generation of a popping noise when the microphone circuit is reset.

Abstract: A phase lock loop (PLL) circuit is provided. A voltage controlled oscillator (VCO) generates an output clock signal based on a control voltage. A controller provides a first digital control word, a second digital control word and a loop factor. A frequency modifier is coupled to the output clock signal, controlled by the controller to divide the output clock signal by the loop factor to generate a feedback frequency. A charge pump is controlled by the up signal and down signal to generate a charge pump current, comprising a first digital to analog converter (DAC) to generate a first current based on the first digital control word when the up signal is asserted. A second DAC generates a second current based on a second digital control word when the down signal is asserted. The controller defines a first relationship between the first digital control word and the loop factor, and the controller defines a second relationship between the second digital control word and the loop factor.

Abstract: A multi-channel audio playback apparatus including a channel interface, a first switching amplifier and a second switching amplifier is provided. The channel interface is used to receive multi-channel digital data and generate first channel digital data and second channel digital data. The first switching amplifier is used to convert the first channel digital data into a first pulse width modulation (PWM) signal according to a first reference signal with a first frequency. The second switching amplifier is used to convert the second channel digital data into a second PWM signal according to a second reference signal with a second frequency. The second frequency is different from the first frequency.