SNAU293 May 2024 LMX1860-SEP
The high-frequency capability and extremely low jitter of this device, makes a great design to clock precision, high-frequency data converters without degradation to the signal-to-noise ratio. Each of the four high-frequency clock outputs, and additional LOGICLK output with larger divider range, is paired with a SYSREF output clock signal. The SYSREF signal for JESD interfaces can either be internally generated or passed in as an input and re-clocked to the device clocks. For data converter clocking applications, to have the jitter of the clock be less than the aperture jitter of the data converter is critical. In applications where more than four data converters must be clocked, a variety of cascading architectures can be developed using multiple devices to distribute all the high-frequency clocks and SYSREF signals required. With low jitter and noise floor, this device combined with an ultra-low noise reference clock source is an exemplary design for clocking data converters, especially when sampling above 3GHz.