ZL40252LDG1

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Clock amps, or clock buffers, have been appreciated in the industry over the years for their capability to make data transfers between devices faster, reduce jitter, and improve signal integrity. As a result, such parts are now essential in a wide range of applications, from telecoms, desktops, and processor-related components to storage, instrumentation, and automotive.

One of the most renowned clock buffer series is the ZL40252LDG1 from ON Semiconductor. This part is composed of a differential input buffer and two differential output buffers and it operates in a wide range of industrial temperature conditions. But a more detailed look at the technical specifications of this product allows us to draw a clear picture of its capabilities and possible applications.

The ZL40252LDG1 is capable of providing both level and gainshift clock output drive strength, being fully in compliance to the PCIe (v1.0) standard for clock buffers. Clock input-to-output characteristics operate for supply voltage ranges of 2.5V to 3.3V with a voltage range from 1.13V to 1.7V. It’s a high performance part, able to run at high clock rates, up to 1GHz with Very Low Skew. This operation is possible in temperatures from -40°C up to 125°C.

This part does not only present very low power dissipation, but it also presents low Jitter generation for clock signal stability and integrity. Used in a wide variety of markets, such as IOT, artificial intelligence, automated driving, broadband access, cloud computing and datacom (Ethernet 25G/50G/100G, SONET, Fibre channel/ SAS, etc.) it allows signal modification and integrated signal communication lines.

On top of that, its working principle is quite simple. The ZL40252LDG1 presents two differential buffers, one in and one out. Its specific behavior comes from the use of low slew rate and fast settling time. As an example, this product allows an output signal change from 0V to 3.3V in less than 1ns, and from 0V to 0.8V in less than 0.7ns.

Features like hysteresis, swing, and rise/fall times define the ZL40252LDG1’s behavior. The hysteresis dictates the level of the voltage at which the “on” and “off” logic states for the output ports are satisfied, while swing defines the range of the voltages between “on” and “off”. Rise and fall times are the other part of the equation and they are responsible for the time that the signal spends in the middle of the transition.

This product is never delivered to the user in its bare form. In most cases, the ZL40252LDG1 is featured under a specific protocol, like PECL or LVPECL, making it compatible with a much wider range of high frequency signals found in tons of high performance applications.

Being a high performance product, the ZL40252LDG1 is a solid choice for applications that require its specific capabilities. The list of possible applications the ZL40252LDG1 can be used in is very wide. It can handle diverse protocols and a wide range of frequencies. It’s designed for low power/impedance and low noise operation, with very low jitter/slew rates, making it suitable for almost any type of high-end digital clock buffer application.

The ZL40252LDG1 is well suited for applications such as:

• LDI/HDI/SDP Modules
• Fiber Optic Transceiver Modules
• High Performance Switches
• Crosspoint Switches
• DSL Modems
• CDMA/GSM/EDGE Modules
• Set Top Boxes
• High Speed Cable/Wireless Ethernet

The ZL40252LDG1 is the perfect choice for industries that demand the highest performance of clock buffer parts. In conclusion, the ZL40252LDG1 is a high performance part suitable for a wide range of applications. It’s versatile in terms of frequency, voltage and temperature. Its low power consumption and very low jitter levels also render it ideal for many different digital clock buffer applications.

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