SP5070 Datasheet (Mitel Networks) - 2.GHz Fixed Modulus Frequency Synthesiser

SP5070, 2.GHz Fixed Modulus Frequency Synthesiser

The SP5070, when used with a voltage controlled oscillator, forms a complete phase locked loop frequency synthesiser.

The phase comparator comparison frequency is obtained by dividing the reference frequency.

This may be generated on-chip by means of an external crystal, or from an external referenc

SP5070 2.GHz Fixed Modulus Frequency Synthesiser DS3966-2.2 May 996 The SP5070 is a single modulus frequency synthesiser for use in Satellite TV receivers and together with an appropriate voltage controlled oscillator (VCO), forms a complete phase locked loop (PLL) synthesiser.

The circuit consists of a prescaler with preampliﬁer and a ﬁxed modulus divider.

The phase comparator is fed with a reference frequency derived from an external oscillator or crystal.

The comparator has a charge pump ou

SP5070 Features

* s Low Power Consumption (5V, 47mA typ.) s Prescaler and Preampliﬁer Included s Charge Pump Ampliﬁer with Feedback Point s Charge Pump Disable Facility s Synthesises Frequencies up to 2.4GHz s Pin and Function Compatible with SP5060 and SP5062 s Full ESD Protection

* Normal ESD handling proc