CMX7031 Datasheet, PDF (60/82 Pages) CML Microcircuits – Full Audio-band Processing

The Two-Way Radio Processor
CMX7031/CMX7041
Guidelines for using the RF Synthesisers
 RF input slew rate (dv/dt) should be 14 V/µs minimum.
 The RF Synthesiser 2.5V digital supply can be powered from the VDEC output pin.
 RF clock sources and other, different clock sources must not share common IC components, as this
may introduce coupling into the RF. Unused ac-coupled clock buffer circuits should be tied off to a dc
supply, to prevent them oscillating.
 It is recommended that the RF Synthesisers are operated with maximum gain Iset (ie. Iset tied to
RFVss).
 The loop filter components should be optimised for each VCO.
 2013 CML Microsystems Plc
Page 60
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