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Abstract: A power supply module for powering a radio frequency low noise amplifier (LNA) in a monolithic millimeter-wave integrated circuit (MMIC) is designed. The power module is integrated in the MMIC and uses a low-dropout linear regulator (LDO) to provide a stable, low-noise supply voltage. Due to the noise of traditional LDO structure, a novel LDO structure with a combination of voltage pre-regulation and RC low-pass filtering is designed to reduce circuit noise, and a fast start-up is...
Very Large Scale Integration Circuit (VLSI) is an integrated circuit that combines a large number of transistors into a single chip, and its integration degree is larger than that of a large-scale integrated circuit. The number of integrated transistors differs among different standards. Since the 1970s, with the development of complex semiconductors and communication technologies, the research and development of integrated circuits has gradually begun. The control core microprocessor in the...
Today's electronic products are often damaged due to an integrated circuit, resulting in one or several parts can not always work, affecting the normal use of equipment. So how to detect the quality of integrated circuits? Usually there are many integrated circuits in a device. When you get a faulty integrated circuit device, you first need to determine the general location of the fault and then pass Measure, gradually reduce the possible parts of the fault, and finally find the fault. To...
The IC open-short test is divided into open short to VDD and open short to VSS. In general, each pin of the chip has a bleeder or protection circuit. Two diodes are connected end to end. One end is connected to VDD, and the other end to VSS. The signal is coming from the junction of two diodes. When testing, first test the chip. The VDD pin is connected to 0 volts (or ground), and each chip pin is supplied with a current of 100uA to 500uA from the tester to the chip. The current flows through...
Programmed measurement amplifiers have analog switches and drive circuits added to the measurement amplifier. Gain selection switches S1-S'l, S2-S'2, S3-S'3 operate in pairs. Only one switch is closed at each moment. When changing the digital input code, the closed switch number can be changed. Different feedback resistors are equivalent to automatically changing the resistance of the potentiometer R1 in the measurement amplifier to achieve the purpose of changing the gain of the...
The CPU is a core part of a modern computer and is also called a "microprocessor." For PCs, CPU specifications and frequency are often used as an important indicator of the performance of a computer. The Intelx86 architecture has been going on for more than 20 years, and the CPU of the x86 architecture has a profound impact on the work and life of most of us. Many friends who know a little about computer knowledge will mostly know that the most important thing in the CPU is the...
This article will address two issues How to perform high-voltage transient protection on analog input and output of integrated circuits in accordance with IEC 61000-4-2, IEC 61000-4-4 and IEC 61000-4-5 standards; How to design the system input and output protection circuit. EMC standard IEC 61000 is a system-level standard for EMC robustness. The three parts of this standard that deal with high voltage transients are IEC 61000-4-2, IEC 61000-4-4, and IEC 61000-4-5. These are system-level...
The development of the times, the demand for materials, digital integrated circuits can be divided into bipolar integrated circuits (mainly TTL) and unipolar integrated circuits (CMOS, NMOS, PMOS, etc.) according to the conductivity type. The single-gate static power consumption of a CMOS circuit is on the order of nanowatts (nw). Today we will focus on learning the contents of CMOS integrated circuits and mastering it. Introduction to CMOS integrated circuits CMOS Complementary Metal Oxide...
IC integrated circuit basic concept 1. Which types of ICs can be divided according to the process and structure? ICs can be divided into three categories depending on the process and structure: 1 semiconductor IC or monolithic IC, 2 film IC, can be divided into two types: thick film circuit, thin film circuit; 3 hybrid IC (Hybrid IC) according to device structure type classification: bipolar integrated circuit, metal - An oxide-semiconductor (MOS) integrated circuit. 2. What technical...
I believe that everyone will encounter such a situation. When you are typing a document or a piece of code, you have a power outage, I rub..., my code..., my drawings..., I just wrote a good article. .... However, similar situations are encountered in embedded systems, which often result in embedded system data, missing programs, inoperability, and even damage to the storage system. For the embedded system of the core board, the data is not lost under abnormal power failure, and the stability...
I believe that everyone will encounter such a situation. When you are typing a document or a piece of code, you have a power outage, I rub..., my code..., my drawings..., I just wrote a good article. .... However, similar situations are encountered in embedded systems, which often result in embedded system data, missing programs, inoperability, and even damage to the storage system. For the embedded system of the core board, the data is not lost under abnormal power failure, and the stability...
Introduction ABS is a must-have security electronic device in today's cars, and its functions are receiving more and more attention. The ABS system uses a solenoid valve and a return pump to fine-tune the wheel cylinder pressure in the brake to prevent excessive braking and lock the wheel. Due to the very harsh working environment of ABS, in order to ensure the efficiency and reliability of the response of the solenoid valve and the motor, in addition to the parameters of the actuator...
introduction The High Intensity Discharge (HID) lamp actually includes a large class of lighting products that use small high internal pressure arc tube illumination. There are basically three types: mercury vapor (MV) lamps, metal halide (MH) lamps, and High and low pressure sodium (HPS or LPS) lamps. HID lamps all operate on a discharge principle similar to that of fluorescent lamps: when the gas filled in the lamp, such as when the current supplied by the ballast is activated, it...
The electronic control of the xenon headlights by stepper motors is aimed at directing the headlight beam to minimize the intensity of the oncoming vehicle while illuminating the curved road. However, the location of the vehicle motor driver chip has a significant impact on the efficiency of the system. This article refers to the address: http:// High-intensity discharge lamps (xenon lamps) Vehicle headlights are increasingly becoming the technology of choice for vehicle manufacturers...
This article refers to the address: http:// The TA2104 is a monolithic digital tuning integrated circuit manufactured by Toshiba Corporation of Japan, which is dedicated to portable radios and earphone circuits. The launch time of TA2104 is not short, but because of its excellent performance, it is still widely used in the mainstream models of the current market. The TA2104 is applied to the new DE1121 radio introduced in the previous issue of Electronic World. This article describes the...
Codec chip PT2262/PT2272 chip principle introduction PT2262/2272 is a low-power low-cost general-purpose codec circuit manufactured by Taiwan Pucheng Co., Ltd., PT2262/2272 can have up to 12 bits (A0-A11) three State address terminal pin (floating, connected to high level, connected to low level), any combination can provide 531441 address code, PT2262 can have up to 6 bits (D0-D5) data terminal pin, set address code and data The code is serially output from 17-pin and can be used in wireless...
Abstract: This paper introduces the main functions, working principle and programming logic of AD8108, AD8109, and points out several problems that should be paid attention to when designing the software and hardware of 8×16 video switching system with AD8108. Practice shows that the switching system has good reliability and strong anti-interference ability. Keywords: AD8108, AD8109; video switching matrix; broadband video This article refers to the address: http:// 0 Introduction Video matrix...
567 is a universal tone decoder that provides a saturated transistor-to-ground switch when the input signal is in the pass band. The circuit is composed of an I and Q detector, and the voltage controlled oscillator drives the oscillator to determine the center frequency of the decoder. The center frequency bandwidth and output delay are independently set with external components. This article refers to the address: http:// Mainly used for oscillation, modulation, demodulation, and remote...
This article refers to the address: http:// Send to the 5G31 integrated circuit for low-frequency power amplification , and then push the 8 ohm speaker to emit voice. After pressing K1, the whole machine is in the transmitting state. The speaker is used as a microphone to change the voice of the call into an electrical signal, and the low frequency is amplified by the 5G31 to modulate the carrier frequency signal. BG3 constitutes the main vibration level, which generates 27 MHz and the...
This article refers to the address: http:// Connecting a variable resistor (potentiometer) in series can be used for audio control . In addition, it is obvious that if the 3 terminal (output terminal) of A1 is not connected to the 5 terminal of A2, it is connected to the 4 terminal of A2 (reset terminal). Is a beat generator.
DC1366 is a monolithic image channel integrated circuit for image IF signal amplification and detection. Its main functions are image interpolation, video detection, pre-view, automatic noise suppression, AGC, etc. Features of this circuit It has higher gain, can be directly connected to SAWF, wide range of power supply voltage, simple adjustment, etc. It is often used for image channels of black and white TV sets. The application examples are shown in the figure. This article refers to the...
BG5132 is shown in FIG picture line is being applied in an integrated circuit. Its main functions include the intermediate frequency amplifier, video detector sync, ANC, AGC AFT and the like. This article refers to the address: http://
D2611 is a single-row low-frequency amplifier circuit. When DC 16V power supply is applied (the speaker impedance is 8 ohms), the undistorted power of the audio output can reach 1.5 watts. The input impedance is up to 45K~2M. Practical examples are shown in the figure. This article refers to the address: http://
The BJ5250 is an integrated circuit used in the sound channel. It contains all the functions of the second audio intermediate frequency amplification, clipping, frequency discrimination, low frequency amplification and power amplification. It provides a maximum audio output power of 2.5W. Application examples such as The figure shows. This article refers to the address: http://
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.