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.
Why can passive filters filter?
The essence of a filter's ability to filter is to select frequencies by causing reflections and losses through the construction of specific impedance characteristics.
F...
The chip resistors on the circuit board are marked with resistance values, but the chip ceramic capacitors do not have any markings.The capacitor installed on the circuit board is suspected to be dama...
[i=s]This post was last edited by Beifang on 2021-9-3 10:55[/i]Read PDM audio signal
1. Introduction to PDM
As shown below, PDM is a serial audio data format parallel to I2S, replacing the traditional...
1. I looked at the examples and found that there is no FFT example. Does this DSP28335 not support FFT? By the way, the C2000 series has the C2000 ware library. It is much more convenient, but I am no...
The standard bell on the bicycle looks ordinary. I bought a small 3V horn online. It is very cheap and easy to use. It only needs to be powered and does not need to be driven.The speaker modification ...
The most mainstream QI wireless charging schematic in 2022
In 2022, when it comes to wireless charging, everyone is familiar with it. Since the release of Apple 8, consumers have had a preliminary und...
The annual IC festival, the China Semiconductor Investment Alliance Annual Meeting, will be held in Beijing in January 2021. The most anticipated agenda of the meeting is the award ceremony of the Ch...[Details]
If your circuit is always tripping when you're using electronic devices, it's time to check if your circuit breaker needs to be replaced. While the average lifespan of a circuit breaker is 30 to 40 y...[Details]
Wirewound resistors are usually rated for continuous power, which is not sufficient for electric vehicle applications. A typical application is the pre-charging and discharging of large capacitors,...[Details]
Apple Watch's ECG (electrocardiogram) feature has reportedly been approved by domestic regulators, allowing Apple to roll out the feature to Apple Watch users in China. According to a new document ...[Details]
The 8-bit 51 single-chip microcomputer has long occupied the mainstream market of microcontrollers (MCU), but with the development of technology and demand, the application growth rate of 32-bit micr...[Details]
0 Preface
This paper introduces the generation and measurement principles of industrial signals, and mainly studies the design of industrial signal generation and measurement instruments based o...[Details]
Samsung Electronics held a media communication meeting in Beijing with the theme of "Vision. Future" and officially announced its 5G business in China. As far as consumer electronics manufactur...[Details]
Recently, the Shenzhen Securities Regulatory Bureau disclosed that Edifier Co., Ltd. (hereinafter referred to as "Edger Acoustics") is accepting listing guidance. The guidance institution is CICC, an...[Details]
The magnetic float level gauge adopts the principle of communicating vessels to introduce the liquid in the container into the main body of the level gauge at the same height. The floating float asse...[Details]
Knowledge Analysis of Infrared Thermometer
Infrared thermometer is very simple to use. It uses infrared technology to quickly and easily measure the surface temperature of an object. It does no...[Details]
1. The transformer DC resistance tester adopts a high-speed 16-bit A/D converter, with stable measurement data and good repeatability.
2. Automatic programmable current source technology. The cur...[Details]
MCU：STM32F334C8T6 Frameware：STM32F3348-Discovery_FW_V1.0.0 Functionality: Use the serial port debugging assistant on the PC to send characters (data) to the MCU, and the MCU sends the received charac...[Details]
As 2019 draws to a close, competition between China and the United States in the commercialization of autonomous driving has become increasingly fierce. California, which has the largest number of ...[Details]
The global laptop market has grown rapidly in the era of "mobile work and learning" triggered by the epidemic. According to data from industry tracking agency Counterpoint Research, global laptop sal...[Details]
RF/Wirelessly
京公网安备 11010802033920号
EEWORLD
