ADF5000 数据手册DataSheet 下载
... (0.008 inch). RF track widths are 0.015 inch to achieve a controlled 50 Ω characteristic impedance. The complete printed circuit board (PCB) stack-up is shown in Figure 9. 1.5oz (53µm) FINISHED COPPER ROGERS RO4003C LAMINATE 0.008” ...
... (0.008 inch). RF track widths are 0.015 inch to achieve a controlled 50 Ω characteristic impedance. The complete printed circuit board (PCB) stack-up is shown in Figure 9. 1.5oz (53µm) FINISHED COPPER ROGERS RO4003C LAMINATE 0.008” ...
PremiSys - IDenticard
... 2 Form C, SPDT Relays - K1: 5 A at 28 VDC, K2: 1 A at 28 VDC 2 input points - end-of-line (EOL) resistors, 1K/2K ohm1%, ¼ watt standard 1 - Unsupervised, dedicated input points for enclosure tamper ...
... 2 Form C, SPDT Relays - K1: 5 A at 28 VDC, K2: 1 A at 28 VDC 2 input points - end-of-line (EOL) resistors, 1K/2K ohm1%, ¼ watt standard 1 - Unsupervised, dedicated input points for enclosure tamper ...
AN136 - Linear Technology
... for the very first time is when it not only works, but also runs quiet and cool. Unfortunately, this does not always happen. A common problem of switching power supplies is “unstable” switching waveforms. Sometimes, waveform jittering is so pronounced that audible noise can be heard from the magneti ...
... for the very first time is when it not only works, but also runs quiet and cool. Unfortunately, this does not always happen. A common problem of switching power supplies is “unstable” switching waveforms. Sometimes, waveform jittering is so pronounced that audible noise can be heard from the magneti ...
Good Practice for the NCP1602 CSZCD Pin Design and PCB Layout
... When trying to reduce the no-switching standby consumption current by increasing (above 1 MW) the resistance (RCS1 + RCS2 ) of the CSZCD bridge connected between the drain and the source of the power MOSFET (see Figure 1), the sensitivity of the CSZCD pin to PCB parasitic capacitors is increased. In ...
... When trying to reduce the no-switching standby consumption current by increasing (above 1 MW) the resistance (RCS1 + RCS2 ) of the CSZCD bridge connected between the drain and the source of the power MOSFET (see Figure 1), the sensitivity of the CSZCD pin to PCB parasitic capacitors is increased. In ...
Drift Speed Questions - G482
... A copper wire has a cross-sectional area of 0.20 ×10–6 m2. Copper has 1.0 × 1029 free electrons per cubic metre. Calculate the current through the wire when the drift speed of the electrons is 0.94 mm s–1. ...
... A copper wire has a cross-sectional area of 0.20 ×10–6 m2. Copper has 1.0 × 1029 free electrons per cubic metre. Calculate the current through the wire when the drift speed of the electrons is 0.94 mm s–1. ...
Series-Parallel Circuits
... • Rules for analyzing series and parallel circuits still apply • Same current occurs through all series elements ...
... • Rules for analyzing series and parallel circuits still apply • Same current occurs through all series elements ...
A-1 - Elitech-m.ru
... to ground is high level, which means the machine inside is in over-current condition, and need to check the parts of output diodes, main transformer and inverter discrete IGBT in the main board. ...
... to ground is high level, which means the machine inside is in over-current condition, and need to check the parts of output diodes, main transformer and inverter discrete IGBT in the main board. ...
Application Notes - NXP Semiconductors
... 9. When connecting the Power surface/trace with 1oz copper thicknesses, use the following: The width of the surface/trace should be wider than 1mm/A. The connection of the power surface/trace should use multiple vias (as many as possible) 10. All the trace angles should be less than or equal to 45°C ...
... 9. When connecting the Power surface/trace with 1oz copper thicknesses, use the following: The width of the surface/trace should be wider than 1mm/A. The connection of the power surface/trace should use multiple vias (as many as possible) 10. All the trace angles should be less than or equal to 45°C ...
Final Report for ECE 445, Senior Design, Spring 2015
... minimize any impedance change, the best routing would be a round bend. Separate high-speed signals (e.g., clock signals) from low-speed signals and digital from analog signals; again, placement is important. To minimize crosstalk not only between two signals on one layer but also between adjacent la ...
... minimize any impedance change, the best routing would be a round bend. Separate high-speed signals (e.g., clock signals) from low-speed signals and digital from analog signals; again, placement is important. To minimize crosstalk not only between two signals on one layer but also between adjacent la ...
Evaluates: MAX649/MAX651/MAX652/MAX1649/MAX1651 MAX1649 Evaluation Kit General Description Features
... Output Voltage Adjustment The output voltage can be adjusted with minor modifications to the EV kit board. First, select output voltagedivider resistors R2 and R3 (refer to the Setting the Output Voltage section of the MAX1649 data sheet). Second, open jumper JU3 and resistor R3 by cutting the thin ...
... Output Voltage Adjustment The output voltage can be adjusted with minor modifications to the EV kit board. First, select output voltagedivider resistors R2 and R3 (refer to the Setting the Output Voltage section of the MAX1649 data sheet). Second, open jumper JU3 and resistor R3 by cutting the thin ...
Circuit Note CN-0175
... The AD7607 is an 8-channel, 14-bit DAS. Also available are the AD7606-6 (6-channel, 16-bit DAS) and AD7606-4 (4-channel, 16-bit DAS). The AD7608 is an 8-channel 18-bit DAS. Alternate voltage references can be chosen using the Voltage Reference Selection and Evaluation Tool. For more details on layou ...
... The AD7607 is an 8-channel, 14-bit DAS. Also available are the AD7606-6 (6-channel, 16-bit DAS) and AD7606-4 (4-channel, 16-bit DAS). The AD7608 is an 8-channel 18-bit DAS. Alternate voltage references can be chosen using the Voltage Reference Selection and Evaluation Tool. For more details on layou ...
Evaluates: MAX1790 MAX1790 Evaluation Kit General Description Features
... 500kΩ without sacrificing accuracy. R1 is then given ...
... 500kΩ without sacrificing accuracy. R1 is then given ...
diyAudio™ Power Supply Board Build Guide
... used in the example, as long as you go higher but not lower than the computed Working Voltage. Adding extra headroom by choosing the next higher voltage value guarantees the safe operation of your power supply. Choosing the capacitance value of your capacitors depends mostly on your intended applica ...
... used in the example, as long as you go higher but not lower than the computed Working Voltage. Adding extra headroom by choosing the next higher voltage value guarantees the safe operation of your power supply. Choosing the capacitance value of your capacitors depends mostly on your intended applica ...
AN583: Safety Considerations and Layout
... meets the requirements of Underwriters Laboratories UL94-V0. Cheaper alternatives have higher dielectric losses at high frequencies, absorb more moisture, and provide less strength and stiffness. Moreover, FR-4 exhibits flammability characteristics that are self-extinguishing. Assuming a rise/fall t ...
... meets the requirements of Underwriters Laboratories UL94-V0. Cheaper alternatives have higher dielectric losses at high frequencies, absorb more moisture, and provide less strength and stiffness. Moreover, FR-4 exhibits flammability characteristics that are self-extinguishing. Assuming a rise/fall t ...
infrared sauna room
... White Power Box through the black grommet in back wall allowing enough room not to pinch power cord. G: Set White Power Box on floor and connect preinstalled wiring to harness exposed on lower left corner of back wall. H: Installation of BACK WALL Heaters, Heaters will be installed in provided screw ...
... White Power Box through the black grommet in back wall allowing enough room not to pinch power cord. G: Set White Power Box on floor and connect preinstalled wiring to harness exposed on lower left corner of back wall. H: Installation of BACK WALL Heaters, Heaters will be installed in provided screw ...
Low Cost 10-Bit, 6-Channel Output Decimating LCD DecDriver AD8383
... consists of an output current limiter and a thermal shutdown. The maximum current at any one output of the AD8383 is internally limited to 100 mA, average. In the event of a momentary short-circuit between a video output and a power supply rail (AVCC or AGND), the output current limit is sufficientl ...
... consists of an output current limiter and a thermal shutdown. The maximum current at any one output of the AD8383 is internally limited to 100 mA, average. In the event of a momentary short-circuit between a video output and a power supply rail (AVCC or AGND), the output current limit is sufficientl ...
estimating bond wire current-carrying capacity
... package’s pins. An approach involving replacing gold wire with copper is gaining strength due to copper’s superior electrical and thermal properties, ...
... package’s pins. An approach involving replacing gold wire with copper is gaining strength due to copper’s superior electrical and thermal properties, ...
Parallel Resistance
... Notice that the color for the first strip on the resistor has changed. In the electronic component lesson these color bands or strips will be explained, it should be noted know that the resistance is as labeled. (100 Ω) The formula in figure 4 can only be used to solve for two resistances at a time. T ...
... Notice that the color for the first strip on the resistor has changed. In the electronic component lesson these color bands or strips will be explained, it should be noted know that the resistance is as labeled. (100 Ω) The formula in figure 4 can only be used to solve for two resistances at a time. T ...
02049
... obtain high precision, the design was implemented on printed circuit boards. The principle is shown in Figure 1. Each printed circuit board contains one imprinted coil. Coils are wound in opposite directions (right-handed and left-handed). The principle is shown in Figure 2a. The right-handed coil i ...
... obtain high precision, the design was implemented on printed circuit boards. The principle is shown in Figure 1. Each printed circuit board contains one imprinted coil. Coils are wound in opposite directions (right-handed and left-handed). The principle is shown in Figure 2a. The right-handed coil i ...
Copper fractals - Cornell College
... electrode is fed through the glue and the inner Petri dish while heated by a soldering iron (the tip of the electrode must have any glue or melted plastic removed with a razor). It is important to note that the center electrode must be poking through very little, such that the fractals have as close ...
... electrode is fed through the glue and the inner Petri dish while heated by a soldering iron (the tip of the electrode must have any glue or melted plastic removed with a razor). It is important to note that the center electrode must be poking through very little, such that the fractals have as close ...
Evaluates: MAX1966/MAX1967 MAX1966 Evaluation Kit General Description Features
... The MAX1966 evaluation kit (EV kit) is a fully assembled and tested circuit board that contains two independent step-down DC-to-DC converter circuits. The MAX1966 circuit is optimized for a 3V to 5.5V input range and delivers 1.8V at 2A. The MAX1967 circuit is optimized for a 4.9V to 20V input range ...
... The MAX1966 evaluation kit (EV kit) is a fully assembled and tested circuit board that contains two independent step-down DC-to-DC converter circuits. The MAX1966 circuit is optimized for a 3V to 5.5V input range and delivers 1.8V at 2A. The MAX1967 circuit is optimized for a 4.9V to 20V input range ...
Printed circuit board
A printed circuit board (PCB) mechanically supports and electrically connects electronic components using conductive tracks, pads and other features etched from copper sheets laminated onto a non-conductive substrate. PCBs can be single sided (one copper layer), double sided (two copper layers) or multi-layer (outer and inner layers). Multi-layer PCBs allow for much higher component density. Conductors on different layers are connected with plated-through holes called vias. Advanced PCBs may contain components - capacitors, resistors or active devices - embedded in the substrate.FR-4 glass epoxy is the primary insulating substrate upon which the vast majority of rigid PCBs are produced. A thin layer of copper foil is laminated to one or both sides of an FR-4 panel. Circuitry interconnections are etched into copper layers to produce printed circuit boards. Complex circuits are produced in multiple layers. Printed circuit boards are used in all but the simplest electronic products. Alternatives to PCBs include wire wrap and point-to-point construction. PCBs require the additional design effort to lay out the circuit, but manufacturing and assembly can be automated. Manufacturing circuits with PCBs is cheaper and faster than with other wiring methods as components are mounted and wired with one single part. Furthermore, operator wiring errors are eliminated.When the board has only copper connections and no embedded components, it is more correctly called a printed wiring board (PWB) or etched wiring board. Although more accurate, the term printed wiring board has fallen into disuse. A PCB populated with electronic components is called a printed circuit assembly (PCA), printed circuit board assembly or PCB assembly (PCBA). The IPC preferred term for assembled boards is circuit card assembly (CCA), and for assembled backplanes it is backplane assemblies. The term PCB is used informally both for bare and assembled boards.The world market for bare PCBs reached nearly $60 billion in 2012.