STW81103 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'STW81103' PDF : 53 Pages View PDF
Circuit description
STW81103
5.10
External VCO buffer
Although the main benefits of the STW81103 are the two wideband and low-noise VCOs,
the capability to use an external VCO is also provided.
The external VCO buffer is able to manage a signal coming from an external VCO in order to
build a synthesizer using the STW81103 only as PLL IC. The output signal of the
synthesizer can also be taken from the output section of the STW81103 (direct, divided by 2
or divided by 4 by) by properly setting the PD[4:0] bits, thus providing additional flexibility.
The external VCO signal can range from 625 MHz up to 5 GHz and its minimum power level
must be -10 dBm.
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