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SP5668 Datasheet 2.7ghz 3-wire Bus Controlled Synthesiser

Manufacturer: Mitel Networks

Overview: SP5668 2.7GHz 3-Wire Bus Controlled Synthesiser Preliminary Information DS4538 - 1.6 January 1997 . The SP5668 is a single chip frequency synthesiser designed for tuning systems up to 2.7GHz. The RF preamplifer contains a divide by two prescaler which can be disabled for applications up to 2GHz so enabling a step size equal to the parison frequency up to 2GHz and twice the parison frequency up to 2.7GHz. parison frequencies are obtained either from a crystal controlled on–chip oscillator or from an external source. The device contains three switching ports, P0 – P2, together with an ’in–lock’ flag output. Various test modes including varactor disable and charge pump disable are also included.

Key Features

  • s Complete 2.7GHz single chip system s Optimised for low phase noise s Selectable divide by two prescaler s Selectable reference division ratio s Charge pump disable s Varactor line disable s ‘In.
  • lock’ flag s Two selectable charge pump currents s Three switching ports s Reference frequency output s ESD protection (Normal ESD handling procedures should be observed) MP16 Fig. 1 Pin connections - top view.

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