XR81101-AA02-F產(chǎn)品概述
The XR81101-AA02 is a clock synthesizer operating at a 3.3 V/2.5 V supply with Integer divider, using a 25 MHz parallel resonant crystal reference input provides a 125 MHz LVCMOS output. The device is optimized for use with a 25 MHz crystal (or system clock) and generates a 125 MHz output clock for GE applications. The LVCMOS output has very low phase noise jitter of sub 150 fs, while consuming extremely low power. The application diagram below shows a typical synthesizer configuration with any standard crystal oscillating in fundamental mode. Internal load capacitors are optionally available to minimize/eliminate external crystal loads. A system clock can also be used to overdrive the oscillator for a synchronous timing system. The typical phase noise plot below shows the jitter integrated over the 1.875 MHz to 20 MHz range that is widely used in WAN systems. These clock devices show a very good high frequency noise floor below -150 dB. The XR81101 is a family of Universal Clock synthesizer devices in TSSOP-8 packages. The devices generate ANY frequency in the range of 10 MHz to 200 MHz by utilizing a highly flexible delta sigma modulator and a wide ranging VCO. These devices can be used with standard crystals or external system clock to support a wide variety of applications. This family of products has an extremely low power PLL block with core power consumption 40% less than the equivalent devices from competition. By second sourcing several of the existing sockets, these devices provides a very compelling power efficiency value benefit across all market segments. Other clock multiplier and/or driver configurations are possible in this clock family and can be requested from the factory.
Features:
XR81101-AA02: Factory configured
One LVCMOS output
Crystal oscillator interface which can also be overdriven using a single-ended reference clock
Output frequency: 125 MHz
Crystal/input frequency: 25 MHz, parallel resonant crystal
RMS phase jitter @ 125 MHz, 1.875 MHz - 20 MHz: <150 fs
Full 3.3 V or 2.5 V operating supply
-40°C to 85°C ambient operating temperature
Lead-free (RoHS 6) package
Datasheet
