VCSO Based Clock PLL

The M2020/21 is a VCSO (Voltage Controlled SAW Oscillator) based clock jitter attenuator PLL designed for clock jitter attenuation and frequency translation. The device is ideal for generating the transmit reference clock for optical network systems supporting 2.5-10 GB data rates. It can serve to jitter attenuate a stratum reference clock or a recovered clock in loop timing mode. The M2020/21 module includes a proprietary SAW (surface acoustic wave) delay line as part of the VCSO. This results in a high frequency, high-Q, low phase noise oscillator that assures low intrinsic output jitter.

Features

  • Integrated SAW (surface acoustic wave) delay line
  • Low phase jitter of < 0.5ps rms, typical (12kHz to 20MHz or 50kHz to 80MHz)
  • Output frequencies of 15 to 700 MHz *
  • LVPECL clock output (CML and LVDS options available)
  • Reference clock inputs support differential LVDS, LVPECL, as well as single-ended LVCMOS, LVTTL
  • Loss of Lock (LOL) output pin
  • Narrow Bandwidth control input (NBW pin)
  • Hitless Switching (HS) options with or without Phase Build-out (PBO) available for SONET (GR-253) / SDH (G.813) MTIE and TDEV compliance during reference clock reselection
  • Industrial temperature grade available
  • Single 3.3V power supply
  • Small 9 x 9 mm SMT (surface mount) package

Product Options

Orderable Part ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
M2021-11-622.0800 Obsolete CG36 CLCC 36 C Yes Tube Availability
M2021-11-622.0800T Obsolete CG36 CLCC 36 C Yes Reel Availability
M2021-13-622.0800 Obsolete CG36 CLCC 36 C Yes Tube Availability
M2021-13-622.0800T Obsolete CG36 CLCC 36 C Yes Reel Availability

Technical Documentation

Title Other Languages Type Format File Size Date
PCNs & PDNs
PCN# : TB1303-02 Change of Tape & Reel Packing Method for Selective Products Product Change Notice PDF 361 KB Mar 23, 2013
PDN# : Z-13-01 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 71 KB Mar 18, 2013