LMX2353 National Semiconductor Corporation, LMX2353 Datasheet - Page 15

• Manufacturer Part Number: LMX2353
• Description: Pllatinum? Fractional N Single 2.5 Ghz Low Power Frequency Synthesizer
• Manufacturer: National Semiconductor Corporation

2.0 Programming Description
(Continued)
DS101124-5
2.4.2.3 Analog Lock Detect Filter
When the F
LD output is configured as analog lock detect output, an external lock detect circuit is needed in order to provide a
O
steady LOW signal when the PLL is in the locked state. A typical circuit is shown below. It is noticed that F
LD is an “active low”
O
open drain output.
DS101124-6
15
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