CTSLV315QG

Clock Buffers, Drivers Overview

The CTSLV315 is a configurable ultra-low phase noise LVPECL and LVDS buffer and translator IC designed for high-performance clock distribution. It operates on a 2.375V to 3.6V supply and supports input frequencies up to 1GHz in ÷1 mode or 1.6GHz in ÷2 mode. The device provides selectable output formats (LVPECL or LVDS), division ratios, and enable polarity via static configuration bits. Key electrical specifications include a phase noise floor of -167dBc/Hz for LVPECL and -165dBc/Hz for LVDS at 1MHz offset. Integrated jitter is specified at 26fs for LVPECL and 36fs for LVDS over a 12kHz-20MHz bandwidth.

Clock Buffers, Drivers Feature Summary

• Configurable architecture supporting LVPECL or LVDS outputs with active high/low enable selection
• Ultra-low phase noise performance: -167dBc/Hz (LVPECL) and -165dBc/Hz (LVDS)
• High-speed operation with 1GHz maximum frequency in ÷1 mode and 1.6GHz in ÷2 mode
• Compact SON8 or MSOP8 package design suitable for dense PCB layouts

Clock Buffers, Drivers Applications

• Converting crystal or SAW oscillators to LVPECL/LVDS signals
• Ultra-low phase noise clock distribution systems
• Signal translation for applications requiring gain below 0.6 Vp-p levels

Clock Buffers, Drivers Procurement Notes

Verify the specific package variant required for the application, as the CTSLV315 is available in both SON8 (suffix QG) and MSOP8 (suffix TG). Confirm that the selected configuration bits align with the desired output format and enable polarity before finalizing the order. Ensure the design accommodates the necessary termination resistors for the chosen output standard.

Clock Buffers, Drivers Selection Notes

Select the CTSLV315 when an ultra-low phase noise buffer is needed for signals below 0.6 Vp-p. For higher signal levels without gain requirements, consider the CTSLV310. Designers must configure the b-0 and b-1 pins to set the output type and division ratio. Ensure the input signal swing is at least 750mVpp to meet AC specifications and use AC coupling to maintain duty cycle integrity.

Clock Buffers, Drivers Part Context

The CTSLV315 belongs to CTS-Frequency Controls' family of low-noise clock buffers. It serves as a flexible solution for translating oscillator signals into differential formats. The device distinguishes itself through its configurable nature, allowing a single component to replace multiple fixed-function buffers by adjusting static pin states.

Clock Buffers, Drivers Replacement Considerations

For applications with higher signal levels that do not require gain, the CTSLV310 is recommended as an alternative. Verify compatibility regarding supply voltage ranges and output drive capabilities when substituting.