Grounding and decoupling are fundamental aspects of high-frequency PCB design. Effective grounding strategies, dedicated ground planes, and proper decoupling capacitor placement and selection are essential for maintaining signal integrity, reducing noise, and ensuring reliable circuit performance in high-freque...
How to Choose Capacitors Capacitors are utilized in different circuits. Choosing the component of your capacitor for your PCB design using just the value for the capacitance is not usually enough in the majority of applications. Just like the resistor components, the capacitors also possess tolerance...
Firstly, adding an AC-coupling capacitor to the input of the TIA input also requires connecting a DC path to the detector. By placing a resistor, RB, the APD’s bias point can be set, allowing you to AC couple the TIA input with CIN, as shown in Figure 3. One sacrif...
We refer to its PCI-e demo board, howver, we found that the traces don't have AC coupling capacitors of XCVR (RX&TX) between FPGA and SFP. Do we need to add AC coupling capacitor for our board when we use fpga interconnecting with SFP? Translate...
The ADC internal design is based on the switched-capacitor technique. The following figures (Figure 1 to Figure 6) explain the principle of ADC operation. The example given below shows only the first steps of approximation but the process continues until the LSB is reached. Figure 1....
Capacitive output coupling is supplied by means of the capacitor C1, which ensures that that the external load impedance be high enough so that it does not overload the circuit and destroy the oscillations. During the time the pierce oscillator circuit oscillates at the crystal frequency, it com...
high conductivity of metals, so the voltage drop across them can be neglected. As a result of these considerations, the circuit in Fig.1c can be represented, to a very good approximation, by a capacitor, a resistance, and a second capacitor in series, as in Fig.1d and in the work of...
Manage your components, get real-time supply chain data, access millions of ready-to-use parts. Learn More Let’s consider a common situation you might encounter in RF design, or in PCIe routing, where you have an AC coupling capacitor placed on the line. In an RF situation at radar fre...
The cutoff frequency is inversely proportional to the product of the coupling capacitance and the resistance of the spectrum analyzer's input terminal. Since the impedance of the spectrum analyzer is a fixed value, usually 50 Ω, the capacitance of the AC-coupling capacitor determines how low of...
This AC-coupling capacitor will have a value of 0.033 μF when the device is running in 4-Gbps mode. At lower data rates, a larger coupling cap will be required. When connecting to a coax cable, the AC-coupling cap on the dummy side of the output (DOUTN) should also have an AC-...