Resistor values are typically 120 to 240 ohms for 3.3V opera on and 82 to 120 ohms for 2.5V
opera on.
Figure 7 - Pull Up Pull Down Termina on
Resistor values are typically for 3.3V opera on
For 2.5V opera on, the resistor to ground is 62 ohms and the resistor to supply is 240 ohms
There are numerous applica on notes on termina ng and interfacing PECL logic and the two most common methods are a single resistor to ground, Figure 6,
and a pull-up/pull-down scheme as shown in Figure 7. An AC coupling capacitor is op onal, depending on the applica on and the input logic requirements of
the next stage.
One of the most important considera ons is termina ng the Output and Complementary Outputs equally. An unused output should not be le un-
terminated, and if one of the two outputs is le open it will result in excessive ji er on both. PC board layout must take this and 50 ohm impedance matching
into account. Load matching and power supply noise are the main contributors to ji er related problems.
LVDS Applica on Diagrams
+3.3V
OE or NC
10nF
1nF
1
6
+3.3V
OE or NC
10nF
1nF
1
6
10nF
OE or NC
2
5
100
3
4
10nF
OE or NC
2
5
Receiver
100
Receiver
3
4
Figure 8 - LVDS to LVDS, internal 100Ω
Some LVDS structures have an internal 100 ohm resistor on the
input and do not need addi onal components.
Figure 9 - LVDS to LVDS, External 100Ω and AC block ing caps
One of the most important considera ons is termina ng the Output and Complementary Outputs equally. An unused output should not be le un-
terminated, and if one of the two outputs is le open it will result in excessive ji er on both. PC board layout must take this and 50 ohm impedance matching
into account. Load matching and power supply noise are the main contributors to ji er related problems.
We purchased several M430F5438A development boards and hope to develop FFT. However, when using the MSP-EXP430F5438 _User_Expertience (slac2271) provided by TI, the link error is as follows:
“
Linking...
Imagine being able to change your project MCU card according to your needs, almost like upgrading your computerhttps://www.hackster.io/MakerIoT2020/interchangeable-esp12-e-card-074268...
Why can't the internal resistance of a diode be ignored when the current is large? According to 1/rbe being approximately equal to Id/Ut, shouldn't the internal resistance be smaller when the current ...
I was browsing forums and news these days, and suddenly saw a new term - Wi-Fi 7
....Um....
No, wasn’t Wi-Fi 6 being promoted before? What the hell, I haven’t even used a Wi-Fi 6 router and I’m planni...
[i=s]This post was last edited by lugl4313820 on 2022-7-23 17:15[/i]After changing to the Ubuntu system, you can experience the xfce desktop.
1. After connecting to the development board with ssh, log...
Hello teachers, the circuit I sent before is different from what the teacher asked for. He wants the load to be at the bottom, and then the current flows from the power supply through the load directl...
A switching power supply uses
electronic
switching devices (such as transistors, field effect transistors, thyristors, etc.) to
control
the circuit
, so that
the electroni...[Details]
The United States currently builds fewer wafer fabs than other parts of the world. Therefore, in order to solve this problem, the United States submitted the CHIPS Act specifically for the semiconduc...[Details]
The name of the watchdog is quite interesting. Its function is to bite the owner when he is distracted to wake him up. In practical terms, when the MCU enters an infinite loop somewhere during operat...[Details]
describe
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On September 7, the Information Office of the Dezhou Municipal People's Government held a press conference to introduce the relevant situation of "Dezhou City's efforts to serve the development of ...[Details]
Last Friday local time in the United States, Applied Materials released its latest financial report for fiscal year 2021. The financial report shows that the company's revenue in the second quarter...[Details]
Light contains the meanings of energy, speed, distance, etc. It is the speed limit in our cognition and the origin of life. Light is also important for cars. Sufficient light gives us the confidenc...[Details]
Digital Chat Station has just exposed the detailed parameters of vivo NEX 3/3 5G version, let’s take a look. The vivo NEX 3 and the vivo NEX 3 5G version have the same configuration except for th...[Details]
The simulation system of the single-chip microcomputer motor speed measurement system uses the T1 counter in the single-chip microcomputer to count the speed pulses. Timer T1 works in the external ev...[Details]
Light Emitting Diodes (
LEDs
) are commonly used in a variety of modern electronic designs and systems to provide image
display
and status inspection capabilities. As boards become m...[Details]
Since the advent of computers, people have been thinking about how to achieve a more effective way to communicate between people and computers, which is the so-called human-computer interaction techno...[Details]
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