Figure 7. Standard PECL Output Configuration Figure 8. Single Resistor Termination Scheme
Resistor values are typically 140 ohms for
3.3V operation.
Resistor values are typically 84 ohms for 2.5V
operation.
The VCC6 incorporates a standard PECL output scheme, which are un-terminated emitters as shown in Figure 7. There are numerous application notes on
terminating and interfacing PECL logic and the two most common methods are a single resistor to ground, Figure 8, and a pull-up/pull-down scheme as
shown in Figure 9. An AC coupling capacitor is optional, depending on the application and the input logic requirements of the next stage.
LVDS Application Diagrams
V
CC
LVDS
Driver
100
LVDS
Receiver
LVDS
Driver
100
Receiver
OUT+
OUT-
Figure 10 Standard LVDS
Output Configuration
Figure 11. LVDS to LVDS Connection, Internal 100ohm
Figure 12. LVDS to LVDS Connection
Some LVDS structures have an internal 100 ohm resistor on the
External 100ohm and AC blocking caps
input and do not need additional components.
Some input structures may not have an internal 100 ohm
resistor on the input and will need an external 100ohm
resistor for impedance matching. Also, the input may have
an internal DC bias which may not be compatible with
LVDS levels, AC blocking capacitors can be used.
One of the most important considerations is terminating the Output and Complementary Outputs equally. An unused output should not be left un-termi-
nated, and if one of the two outputs is left open it will result in excessive jitter 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 jitter related problems.
[i=s]This post was last edited by emmnn on 2022-1-29 11:10[/i]Preface
It has been more than two weeks since my last post. I just got home and rested for two days. I remembered the review and took out ...
[i=s]This post was last edited by DIAG on 2019-3-24 22:01[/i] [size=5]It’s still the old 32 Skyworth LCD TV, with simple functions, suitable for my grandma. The auxiliary 5V power supply was repaired ...
The difference and usage of passive crystal and active crystal oscillator :This content is originally created by EEWORLD forum userzkj2014. If you need to reprint or use it for commercial purposes, yo...
The title of this chip in the review is: Ateli AT-START-F425, the first choice for USB and CAN applications
Now let's start the basic use of CAN:
1. Add can.h and can.c to the drivers folder:
The RX o...
Figure (01) shows the circuit of the UC1525A (same as UC2535A and UC3525A, the three models differ only in the operating temperature range) switching power supply control chip produced by Unitrode (ac...
1. Example 1 Phenomenon Description
The AO point in the Siemens PLC sends out a 4-20mA current control signal, which is output to the Siemens inverter, but cannot control the inverter to start...[Details]
On December 8, the 2022 "Hello BOE" O_SPACE Institute for Better Life was grandly launched in Chengdu. As a benchmark brand marketing event of BOE (BOE), and also a popular annual product promotion...[Details]
On June 11, a California judge today rejected Tesla's attempt to dismiss allegations of false advertising of its autonomous driving technology, and the case will enter the formal trial stage.
...[Details]
This is transformation! Equipment also has a health management plan. Cloud maintenance helps factory equipment manage its health throughout its life cycle.
Preface
...[Details]
Speaking of Tektronix oscilloscopes, I believe that many electronic engineers are familiar with them. So, in daily operation, do you take care of the daily maintenance and operating precautions of th...[Details]
The grid problem will have a certain impact on our electricity consumption through the mains, which will not be obviously felt by general equipment and ordinary electricity consumption. However, so...[Details]
Please help me analyze the clock cycles occupied by the following delay program. Seek to explain: DELAY: MOV R6, #13 DELAY1: MOV R5, #250 DELAY2: NOP DJNZ R5, DELAY2 DJNZ R6, DEL...[Details]
About the concept of single-chip microcomputer interrupt system: What is an interrupt? Let's introduce it from a routine in life. You are reading a book at home, and suddenly the phone rings. You p...[Details]
Basic concept of baud rate: Baud rate is a parameter to measure communication speed, which indicates the number of bits transmitted per second (from: http://baike.haosou.com/doc/5430972-5669264...[Details]
The architectures of the two are different. The core component of AWG is the DAC, which compiles the waveform with carrier information and plays it directly through the DAC. The latter includes a bas...[Details]
MCU can help realize smart LED bulbs. LED lighting system manufacturers rely on MCUs with built-in BCCU functions to significantly shorten the time to develop smart high-power LED bulbs and help end ...[Details]
With the evolution of process nodes, Moore's Law is becoming increasingly difficult to sustain, and the integrated circuit industry has entered the "post-Moore era". On May 14, Xi Jinping, member of ...[Details]
China Energy Storage Network
: I believe that energy internet is actually the application of internet technology and renewable energy to all aspects of energy extraction and distribution; cha...[Details]
1. Hardware Principle The 2440 has five 16-bit timers, of which 0, 1, 2, and 3 have PWM functions and an output pin that can generate periodic high and low level changes. Timer 4 has no output pin. ...[Details]
On October 18, the Ganquanbao 400MW/1600MWh hybrid electrochemical shared energy storage project with a total investment of about 1.9 billion yuan was launched in the Ganquanbao Economic and Technolog...[Details]
GD32 MCU
京公网安备 11010802033920号
EEWORLD
