Universal Clock - High Frequency LVCMOS Clock Synthesizer


The XR81102 is a family of Universal Clock synthesizer devices in TSSOP-8 packages. The devices generate ANY frequency in the range of 100 MHz to 700MHz by utilizing a highly flexible delta sigma modulatorand a wide ranging VCO. The high clock frequency LVPECL outputs have very low phase noise jitter of sub 150fs, while consuming extremely low power. These devices can be used with standard crystals or external system clock to support a variety of applications. This family of products have an extremely low power PLL block with core power consumption less than 40% of 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.

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  • One differential LVPECL output pair
  • Crystal oscillator interface which can also be overdriven using a single-ended reference clock
  • Output frequency: 125MHz
  • Crystal/input frequency: 25MHz, parallel resonant crystal
  • RMS phase jitter @ 125MHz, 1.875MHz - 20MHz: <0.20ps (typical)
  • Full 3.3V or 2.5V operating supply
  • -40°C to 85°C ambient operating temperature
  • Lead-free (RoHS 6) 8-pin TSSOP package


  • Gigabit Ethernet
  • Low-jitter Clock Generation
  • Synchronized clock systems

Design Tools


Pkg Code Details Quantities Dimensions PDF
  • JEDEC Reference: MO-153
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Parts & Purchasing

Part Number Pkg Code RoHS Min Temp Max Temp Status Buy Now Order Samples
XR81102-CA02-F TSSOP8 -40 85 OBS
XR81102-CA02TR-F TSSOP8 -40 85 OBS
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Part Status Legend
Active - the part is released for sale, standard product.
EOL (End of Life) - the part is no longer being manufactured, there may or may not be inventory still in stock.
CF (Contact Factory) - the part is still active but customers should check with the factory for availability. Longer lead-times may apply.
PRE (Pre-introduction) - the part has not been introduced or the part number is an early version available for sample only.
OBS (Obsolete) - the part is no longer being manufactured and may not be ordered.
NRND (Not Recommended for New Designs) - the part is not recommended for new designs.
Distribution Date Description File
07/11/2017 Product Discontinuation Notification Product Discontinuation Notice 17-0623-02 r-1033.pdf
02/15/2017 Qualification of alternate assembly subcon, ANST. PCN 16-1149-02 ANST-1033.pdf

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