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 used Qt when I had nothing to do. I heard that Nokia has sold Qt now. It is said that Qt5 will support Android and WP8. Take a look at my interface. Is there anyone who has worked on Qt? Let's excha...
[Lazy self-care fish tank control system] PRINTF output under RTT in Keil environment
Today I tried using SEGGER's RTT print output program PRINTF
1. In printf.h, we need to make a compilation choice ...
蓝雨夜onsemi and Avnet IoT Innovation Design Competition
WPG Holdings' Cathay Pacific Group launches the best power management solution for car audio and video: Car audio and video systems are no longer just CDs or cassette tapes, but have evolved into all-...
Inductance is a special device that can change the current. It is relatively rarely used in digital circuits and is generally used in power supply related parts. [size=5][color=#ff0000][b]1. Concept [...
The latest C language tools allow you to quickly complete the design of algorithm-intensive applications even if you are not proficient in hardware development.
Hardware designers have b...[Details]
Ultrasonic tooth cleaning machines have been widely used in the medical field. Most ultrasonic tooth cleaning machines used at home and abroad now use analog oscillation circuits. There are the follow...[Details]
Due to the needs of medical development, in many cases, general thermometers can no longer meet the requirements of fast and accurate temperature measurement, such as measuring human body temperature ...[Details]
Among the many candidate standards for China's mobile TV, the CMMB standard proposed by the Broadcasting Science Research Institute of the State Administration of Radio, Film and Television is aime...[Details]
introduction
Controller Area Network (CAN) is a bus standard proposed by Bosch of Germany to solve the information communication between automotive electronic control units. With its exc...[Details]
With the advent of the new economic era represented by the Internet, PCs have lost their former glory, and smart 3C products (Computer, Communication and Consumer) will set off a new wave. As one o...[Details]
Most blood glucose meter implementations include some consumables such as test strips or chemical reagents, and the key to the operation of such equipment is to ensure that these test strips are re...[Details]
As process nodes and die sizes continue to shrink, the number of consumer electronic products using flip-chip packaged IC devices is increasing. However, flip-chip packaging manufacturing rules hav...[Details]
Body Control Module Design Requirements and ON Semiconductor Solutions
As people's demands for car controllability and comfort continue to increase, more and more electronic devices are in...[Details]
Mobile Internet Device (MID) is an emerging product that integrates wireless communication and computing functions, aiming to provide higher portability than laptops and larger display screens than...[Details]
In early 2009, many domestic and foreign media reported that the EU was going to ban the sale of plasma TVs. Paul Gray, head of the European Television Industry Research Association, denied this, b...[Details]
Preface
DS18B2 is generally used in conjunction with a single-chip microcomputer, and there are few reports on the interface between DSP and DS18B20. Therefore, this article introduces in deta...[Details]
1 Introduction
Combination weigher is also called selection combination weighing instrument. It is composed of multiple independent weighing units with feeding and discharging structures. ...[Details]
1 H4006 chip introduction
The operating frequency range of H4006 is 10～15MHz, and 13.56MHz is usually selected for identity recognition. There is a 64-bit programmable memory on the ch...[Details]
Modern high-rise buildings are like a small city arranged vertically, with a high concentration of people and complex and diverse functions. There are many combustible materials in the interior dec...[Details]
Microchip MCU
京公网安备 11010802033920号
EEWORLD
