LMX2350 National Semiconductor Corporation, LMX2350 Datasheet - Page 19

• Manufacturer Part Number: LMX2350
• Description: Pllatinum Tm Fractional N Rf / Integer N If Dual Low Power Frequency Synthesizer
• Manufacturer: National Semiconductor Corporation

Programming Description
(Continued)
4.7 ANALOG LOCK DETECT FILTER
When the Fo/LD output is configured in analog lock detect mode an external lock detect circuit is needed in order to provide a
steady LOW signal when the PLL is in the locked state. A typical circuit is shown below. The fold output is active low (open drain)
only when analog lock detect mode is selected.
DS100831-5
4.8 TYPICAL LOCK DETECT TIMING
DS100831-6
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