Product classification

home page > 资料下载
销售热线:0755-83591082 83591083-802/36956635 传真:0755-83591083
filename file type File size Upload date illustrate Download
Basic knowledge of semiconductor processes .pdf 480Kb 2011/8/31 0:00:00 Microelectromechanical fabrication technology, especially silicon-based micromachining, which is the largest silicon semiconductor-based micromachining technology, originated from the process technology of semiconductor components, so it is necessary to introduce this process clearly Click Download
Commonly used schematic component symbols .pdf 534Kb 2011/8/31 0:00:00 Commonly used schematic component symbols RES1 RES2 RES3 RES4 VARISTOR ELECTRO1 ELECTRO2 CAP CAPVAR CAPACITOR CAPACITOR POL INDUCTOR-INDUCTOR VARIABLE IRON INDUCTOR-INDUCTOR VARIABLE IRON INDUCTOR-INDUCTOR VARIABLE IRON DIODE DIODE SCHOTTKY DIODE TUNNEL DIODE VARACTOR ZENER1 ZENER2 ZENER3 BATTERY NPN PNP NPN1 PNP1 NPN DAR PNP DAR NPN DIAC PNP DIAC NPN-PHOTO PNP-PHOTO PHOTO NPN ANTENNA AND OR BUFFER XOR SOURCE CURRENT NAND NOR NOT XNOR SOURCE VOLTAGE POT1 POT2 RESISTOR TAPPED FUSE1 FUSE2 LED PHOTO PLUGSOCKET THERMAL FUSE TRANZORB LAMP Click Download
TEC1 series refrigeration elements should be paid attention to during use .pdf 281Kb 2011/8/31 0:00:00 When using non-specialized equipment to inspect the device, the temperature of the hot end must be lower than 80°C under the operating parameters (including changing the direction of the current from the cold end to the hot end). Under the condition that there is no heat dissipation at the hot end, the power is turned on instantly for testing, that is, touch the two ends of the cooler with your hands, feel a certain feeling of heat, and feel a slight cold feeling on one side. Otherwise, because the hot end temperature is too high, it is easy to cause the device to short circuit or cut off the view, and the cooler will be scrapped. Click Download
NTC thermistor is used for temperature collection .pdf 417Kb 2011/8/31 0:00:00 This application example enables temperature measurement by NTC thermistors. The thermistor converts the change of temperature into a change in the resistance value, and then applies the corresponding measurement circuit to convert the change of resistance value into a change in voltage. SPMC75F2413A built-in 8-channel ADC can convert the analog voltage value into a digital signal, and the corresponding temperature value can be obtained by processing the numerical signal. Click Download
Speed measurement circuit using Hall elements .pdf 116Kb 2011/8/31 0:00:00 Speed measurement is a common problem in industrial and agricultural production, and it is of great significance to learn to use microcontroller technology to design speed measurement instruments. To measure speed, the first thing to solve is the problem of sampling. When using simulation technology to make a tachymeter, the method of tachymeter generator is commonly used, that is, the shaft of the tachymeter generator is connected to the shaft to be measured, and the voltage of the tachymeter generator reflects the level of rotational speed. Velocity measurement using a microcontroller can be done using a simple pulse counting method. As long as the rotation of the shaft rotates for one week, one or more fixed pulses are generated and the pulses are fed into the microcontroller for counting, the rotational speed information can be obtained. The following is a common toy motor as the speed measurement object, the CS3020 design signal acquisition circuit, through the voltage comparator to realize the output of the counting pulse, not only in the microcontroller experiment box for speed measurement, but also directly connect the output to the frequency meter or pulse counter to get the number of pulses per unit time, and convert to get the motor speed. This requires less hardware and no programming, but is only a validation of Hall sensor velocity measurement applications. Click Download
Principle and application of single-loop PID controller .pdf 243Kb 2011/8/31 0:00:00 Main applications: Industrial machinery manufacturing Electric kilns Plastic machinery Printing and dyeing machinery Scientific research instruments Click Download
Various oscillation circuit design textbooks .rar 422Kb 2011/8/31 0:00:00 The sine wave generation circuit can generate a sine wave output, which is formed on the basis of the amplification circuit plus positive feedback, and it is the core circuit of various waveform generators and signal sources. Sine wave generation circuits are also known as sine wave oscillation circuits or sine wave oscillators. 9.1.1 Conditions for generating a sine wave 9.1.2 RC sine wave oscillation circuit 9.1.3 LC Sine Wave Oscillation Circuit The conditions for generating a sine wave are very similar to those for the negative feedback amplification circuit to generate self-excitation. However, in the negative feedback amplification circuit, the signal frequency reaches both ends of the pass band, generating enough additional phase shift, so that the negative feedback becomes positive feedback. The positive feedback is added to the oscillation circuit, and the oscillation is only a frequency signal after the oscillation is established, and there is no additional phase shift Click Download
Various oscillation circuit design textbooks .rar 422Kb 2011/8/31 0:00:00 The sine wave generation circuit can generate a sine wave output, which is formed on the basis of the amplification circuit plus positive feedback, and it is the core circuit of various waveform generators and signal sources. Sine wave generation circuits are also known as sine wave oscillation circuits or sine wave oscillators. 9.1.1 Conditions for generating a sine wave 9.1.2 RC sine wave oscillation circuit 9.1.3 LC Sine Wave Oscillation Circuit The conditions for generating a sine wave are very similar to those for the negative feedback amplification circuit to generate self-excitation. However, in the negative feedback amplification circuit, the signal frequency reaches both ends of the pass band, generating enough additional phase shift, so that the negative feedback becomes positive feedback. The positive feedback is added to the oscillation circuit, and the oscillation is only a frequency signal after the oscillation is established, and there is no additional phase shift Click Download
Various oscillation circuit design textbooks .rar 422Kb 2011/8/31 0:00:00 The sine wave generation circuit can generate a sine wave output, which is formed on the basis of the amplification circuit plus positive feedback, and it is the core circuit of various waveform generators and signal sources. Sine wave generation circuits are also known as sine wave oscillation circuits or sine wave oscillators. 9.1.1 Conditions for generating a sine wave 9.1.2 RC sine wave oscillation circuit 9.1.3 LC Sine Wave Oscillation Circuit The conditions for generating a sine wave are very similar to those for the negative feedback amplification circuit to generate self-excitation. However, in the negative feedback amplification circuit, the signal frequency reaches both ends of the pass band, generating enough additional phase shift, so that the negative feedback becomes positive feedback. The positive feedback is added to the oscillation circuit, and the oscillation is only a frequency signal after the oscillation is established, and there is no additional phase shift Click Download
Design electronic compass with KMZ51 and KMZ52 .pdf 308Kb 2011/8/29 0:00:00 The KMZ51 and KMZ52 from Philips Semiconductors are magnetic field sensors, dedicated to compass applications. Both sensors rely on the magnetoresistive effect and provide the required sensitivity and linearity to measure the weak magnetic field of the earth. While the KMZ51 is a single axis field sensor, the KMZ52 comprises a two-dimensional field sensor, as it is required for a compass, within one package. Both devices are equipped with integrated set/reset and compensation coils. These coils allow to apply the flipping technique for offset cancellation and the electro-magnetic feedback technique for elimination of the sensitivity drift with temperature. Click Download
The UZZ9001 of the chip is adjusted using the sensor KMZ41 and the sensor signal .pdf 817Kb 2011/8/29 0:00:00 Angle measurement is frequently required in both automotive and industrial applications. Contactless methods have the advantage that they are free of wear. If a magnetic field acts as the transmitter between the physical value to be measured and the actual sensor, the magnetic system and the signal conditioning electronics can be encapsulated separately making such systems robust against dirt, dust and liquid as well as mechanical destruction. Among this class of measurement systems, those using the magnetoresistive effect (MR effect) are characterised by the additional feature that they evaluate the direction of the magnetic field and not the field strength. Therefore MR based systems tolerate variations in field strength caused by ageing or temperaturesensitivity of the magnet as well as mechanical tolerances. This recommends MR based systems for applications where robust, precise, and also cost-efficient solutions are required. Click Download
Clock chip DS1302 and its application in data logging .doc 41Kb 2011/8/29 0:00:00 Clock chip DS1302 and its application in data logging: This paper introduces the structure and working principle of DS1302, a low-power clock chip launched by DALLAS in the United States, and its application in the measurement system. It can time years, months, days, Sundays, hours, minutes, and seconds, and has various functions such as leap year compensation. The DS1302 is used for data logging, especially for certain data points of special significance, and can record data at the same time as the time when the data appeared. This kind of recording is of great significance for the analysis of long-term continuous measurement and control system results and the search for the reasons for the occurrence of abnormal data. Keywords: data logging clock chip DS1302 hardware circuit software design In measurement and control systems, especially in long-term unmanned measurement and control systems, it is often necessary to record certain data of special significance and the time of their appearance. Recording and analyzing these special data is of great significance to the performance analysis and normal operation of the measurement and control system. The traditional data recording method is interval sampling or timed sampling, and there is no specific time record, so only data can be recorded and the time of its appearance cannot be accurately recorded. If you use a microcontroller for timing, on the one hand, you need to use counters, which occupies hardware resources, and on the other hand, you need to set interrupts, queries, etc., which also consumes the resources of the microcontroller, and some measurement and control systems may not allow it. The DS1302 in the system solves this problem well. Click Download
Application circuit description of NE564 .pdf 181Kb 2011/8/29 0:00:00 The NE564 contains the functional blocks shown in Figure 1. In addition to the normal PLL functions of phase comparator, VCO, amplifier and low-pass filter, the NE564 has internal circuitry for an input signal limiter, a DC retriever, and a Schmitt trigger. The complete circuit for the NE564 is shown in Figure 1. Click Download
Clock regenerator with crystal-controlled PLR voltage-controlled oscillator .pdf 171Kb 2011/8/29 0:00:00 In order to obtain a local clock signal in Multiplexed Data Transmission systems, a phase and frequency coherent method of signal extraction is required. A Master-Slave system using the quartz crystal as the primary frequency determining element in a phase-lock loop VCO is used to reproduce a phase coherent clock from an asynchronous Data Stream. Click Download
Two methods of synchronizing FIFO memory deep expansion .pdf 817Kb 2011/8/29 0:00:00 Applications often require FIFO buffers deeper than those offered by discrete devices. By depth expanding multiple devices,a logically deeper FIFO can be constructed. The synchronous FIFO family offers two approaches to this common application. The CY7C42x5 family of x18 devices contain an on-chip expansion circuit, allowing very simple cascading. The CY7C42x1 family of x9 FIFOs take a very different approach since the on-chip expansion logic is not available. Both approaches will be discussed in detail, examining the advantages and disadvantages of each. Click Download
Triode series model, polarity, pin, function and parameters .pdf 245Kb 2011/8/29 0:00:00 Triode series model, polarity, pin, function and parameters Product Name Polar Pin Function Parameter MPSA42 NPN 21E Telephone Video Amplification 300V0.5A0.625W MPSA92 PNP 21E Telephone Video Amplification 300V0.5A0.625W MPS2222A NPN 21 High Frequency Amplification 75V0.6A0.625W300MHZ 9011 NPN EBC High Frequency Amplification 50V30mA0.4W150MHz 9012 PNP SMD LF Amplification 50V0.5A0.625W 9013 NPN EBC LF Amplification 50V0.5A0.625W 9013 NPN SMD LF Amplification 50V0.5A0.625W 9014 NPN EBC Low Noise Amplification 50V0.1A0.4W150MHZ 9015 PNP EBC Low Noise Amplification 50V0.1A0.4W150MHZ 9018 NPN EBC High Frequency Amplification 30V50MA0.4W1GHZ 8050 NPN EBC High Frequency Amplification 40V1.5A1W100MHZ 8550 PNP EBC High Frequency Amplification 40V1.5A1W100MHZ 2N2222 NPN 4A High Frequency Amplification 60V0.8A0.5W25/200NSβ=45 2N2222A NPN Small Iron High Frequency Amplification 75V0.6A0.625W300MHZ 2N2369 NPN 4A Switch 40V0.5A0.3W800MHZ 2N2907 NPN 4A General Purpose 60V0.6A0.4W26/70NSβ=200 2N3055 NPN 12 Power Amplification 100V15A115W 2N3440 NPN 6 VCF Switch 450V1A1W15MHZ 2N3773 NPN 12 Audio Amplifier Switch 160V16A150W COP 2N6609 2N3904 NPN 21E General Purpose 60V0.2Aβ=100-400 2N3906 PNP 21E General Purpose 40V0.2Aβ=100-400 2N5401 PNP 21E Video Amplification 160V0.6A0.625W100MHZ 2N5551 NPN 21E Video Amplification 160V0.6A0.625W100MHZ 2N5685 NPN 12 Audio Amplifier Switch 60V50A300W 2N6277 NPN 12 Amplifier Switch 180V50A250W 2N6609 PNP 12 Audio Amplifier Switch 160V15A150W COP 2N3773 2N6678 NPN 12 Audio Amplifier Switch 650V15A175W15MHZ 2N6718 NPN Small Iron Audio Amplifier Switch 100V2A2W50MHZ 3DA87A NPN 6 Video Amplification 100V0.1A1W 3DG6A NPN 6 General Purpose 15V20mA0.1W100MHz 3DG6B NPN 6 General Purpose 20V20mA0.1W150MHz 3DG6C NPN 6 Universal 20V20mA0.1W250MHz 3DG6D NPN 6 Universal 30V20mA0.1W150MHz 3DG12C NPN 7 Universal 45V0.3A0.7W200MHz 3DK2B NPN 7 Switch 30V30mA0.2W 3DK4B NPN 7 Switch 40V0.8A0.7W 3DK7C NPN 7 Switch 25V50mA0.3W 3DD15D NPN 12 Power Switch 300V5A50W 3DD102C NPN 12 Power Switch 300V5A50W 3522V 5.2V voltage regulator video recorder A634 PNP 28E Audio Amplifier Switch 40V2A10W A708 PNP 6 NF/S 80V0.7A0.8W A715C PNP 29 Audio Amplifier Switch 35V2.5A10W160MHZ A733 PNP 21 Universal 50V0.1A180MHZ A741 PNP 4 S 20V0.1A Click Download
Take DS1820 as an example to introduce the performance and circuit of the temperature control demonstration board .pdf 514Kb 2011/8/29 0:00:00 • Direct–to–digital, direct–to–PC instrumentation with graphical user interface demo • Ready to use temperature control demonstration including piezo–sensor for sensing of mechanical activity and LED to simulate opto–isolators • Features minimalist sensor chips and 1–Wire line–powered MicroLANTM networking technique • Self–configuring TMEX–based software automatically identifies devices and assigns communication port • Includes DS1820 1–Wire Thermometer and DS2407 Addressable Switch as a Sensor/Actuator Click Download
Select the processor reset IC .pdf 260Kb 2011/8/29 0:00:00 Microcontroller and microprocessor based systems rely on processor supervisory functions to insure stable operation. The most basic of all these functions is managing the processor reset input. To ensure stable operation, the processor must be held in reset any time supply voltage is out-of-tolerance. Once supply voltage is in-tolerance, the processor must be maintained in reset for an additional time period to ensure a stable start-up. The processor reset function may be contained on-board the processor itself, or may be externally implemented using discrete components or a supervisor IC. Click Download
How to best use digital programmable delay generators in your application .pdf 76Kb 2011/8/29 0:00:00 The AD9500 and AD9501 digitally programmable delay generators are versatile parts, useful in numerous applications. The parts are designed for use in automatic test equipment as a deskew element for digital data lines. The versatility of the AD9500 and AD9501 for generating programmable delays allows them to be used in applications that range from ATE to communications, computers,disk drives, lasers and ultrasound systems. This note describes how best to apply these parts in some of these applications. Click Download
Combine the op-amp and buffer BUF634 to get more output power .pdf 78Kb 2011/8/29 0:00:00 As long as amplifiers have existed, engineers have been dreaming of an “ideal” op amp. As little noise as possible,high bandwidth, great precision, unlimited input impedance,and output impedance close to 0W—these are specifications desirable for every application. Unfortunately, no op amp can fulfill all of these requirements, particularly not while remaining affordable. A good solution, therefore, is to combine two components, using the best of both parts to achieve desired specifications. Click Download
Low voltage capacitor characteristics .pdf 154Kb 2011/8/29 0:00:00 Texas Instruments (TI) reserves the right to make changes to its products or to discontinue any semiconductor product or service without notice, and advises its customers to obtain the latest version of relevant information to verify, before placing orders, that the information being relied on is current. Click Download
Choose the appropriate level switching scheme .pdf 576Kb 2011/8/29 0:00:00 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Dual-Supply Level Translators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.2 Product Portfolio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3 Open-Drain Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3.1 Application Example − Level Translation Using the SN74LVC2G07 . . . . . . . . . . . . . . . . . . . . . . 9 3.2 Do Not Use Pullup Resistors at Outputs of CMOS Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 4 FET Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 4.1 CBT and CBTD Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 4.2 Using Translation Voltage Clamp (TVC) Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 5 Overvoltage-Tolerant Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 6 Devices With TTL-Compatible Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 7 Summary of Translation Solutions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 8 Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 9 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Click Download
CMOS power consumption and capacitance calculation .pdf 117Kb 2011/8/29 0:00:00 Texas Instruments (TI) reserves the right to make changes to its products or to discontinue any semiconductor product or service without notice, and advises its customers to obtain the latest version of relevant information to verify, before placing orders, that the information being relied on is current Click Download
Resistive capacitive reset and monitor reset pulse comparison .pdf 100Kb 2011/8/29 0:00:00 Resistor capacitance reset and monitor reset pulse comparison: Click Download
Introduction to CNC potentiometers .pdf 70Kb 2011/8/29 0:00:00 There are two types of potentiometers; mechanical and electronic. The terminals of the mechanical potentiometer are called CW (clockwise), CCW (counter clockwise), and wiper. The corresponding names or designations for the terminals of the electronic version are VH or RH, VL or RL,and the wiper VW or RW. The mechanical pot is a three terminal device while the electronic pot is an integrated circuit with a minimum of eight terminals. Click Download
RLD-78 series laser diodes and their applications .pdf 147Kb 2011/8/26 0:00:00 RLD-78 series laser diodes and their applications Click Download
Design power factors using the Greenline Power Factor Controller MC33260 .pdf 262Kb 2011/8/26 0:00:00 The MC33260 is an active power factor controller that functions as a boost pre–converter which, meeting international standard requirement in electronic ballast and off–line power supply application. MC33260 is designed to drive a free running frequency discontinuous mode, it can also be synchronized and in any case, it features very effective protections that ensure a safe and reliable operation. This circuit is also optimized to offer extremely compact and cost effective PFC solutions. It does not entail the need of auxiliary winding for zero current detection hence a simple coil can be used instead of a transformer if the MC33260 Vcc is drawn from the load (please refer to page 19 of the data sheet). While it requires a minimum number of external components, the MC33260 can control the follower boost operation that is an innovative mode allowing a drastic size reduction of both the inductor and the power switch. Ultimately, the solution system cost is significantly lowered. Also able to function in a traditional way (constant output voltage regulation level), any intermediary solutions can be easily implemented. This flexibility makes it ideal to optimally cope with a wide range of applications. This application note will discuss on the design of power factor correction circuit with MC33260 with traditional boost constant output voltage regulation level operation and follower boost variable output voltage regulation level operation. For derivation of the design equations related to the IC please refer to MC33260 data sheet. Click Download
Photodiode and amplifier integrated device OPT301 .pdf 99Kb 2011/8/26 0:00:00 Many measurement circuits require photoelectric detection circuits, and photodiodes and operational amplifiers are often necessary components, but discrete designs generally have insurmountable shortcomings such as leakage current error, mixed noise and gain spikes caused by stray capacitors, OPT301 can eliminate these disadvantages to the greatest extent due to the integration of photodiode and amplifier on the same chip, OPT301 can eliminate these disadvantages to the greatest extent, OPT301 working principle, technical specifications and commonly used application circuits are introduced. Click Download
How to design a stand-alone battery DC-DC converter with HIP4082 .pdf 267Kb 2011/8/26 0:00:00 How to design a stand-alone battery DC-DC converter with HIP4082: The advent of the personal computer (PC), has created the need for uninterruptible power supplies to insulate computers from line dips and temporary outages that plague PC reliability. In addition, numerous other applications exist for DC to AC inverters including small tools or accessories from a DC battery source in automobiles. There is a need, too, for providing battery backup in the telephone industry for 20Hz ring generators. The HIP4082 DC/AC Evaluation Board (subsequently referred to as the “eval-board”) featuring the HIP4082 is one way to increase the performance, while reducing cost of DC to AC conversion. The topology chosen uses the HIP4082 to provide a 60kHz, low voltage, square-wave to drive a small isolation power transformer. The output of this transformer is rectified, filtered, and the high voltage inverted again to produce the desired low frequency (55Hz) output waveform. (55Hz was chosen as a compromise between the 50Hz and 60Hz power standards.) A variable duty-cycle quasi-squarewave output waveform was chosen over a sinusoidal waveform for simplicity and cost-effectiveness. The 60kHz frequency of the primary-side inverter minimizes cost and size of the transformer, while the square-wave output waveform minimizes the size of the secondary-side rectifier filter. Click Download
How to pre-assign pins for XC9500 Series CPLD devices .pdf 95Kb 2011/8/26 0:00:00 Reducing time to market is critical in today’s highly competitive marketplace, and designers often need to prototype their products as swiftly as possible. Because PC board production is often the slowest part of the development process, it is often advantageous to begin PC board layout before the CPLD designs are complete. This requires designers to preassign device pins. Click Download