Electronics > Beginners
How to determine if PLL 4046 is locked?
iMo:
--- Quote from: Benta on August 11, 2018, 08:22:16 pm ---And No, the XOR does not "continually wobble", no idea where that came from.
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Benta:
--- Quote from: imo on August 11, 2018, 08:40:49 pm ---
--- Quote from: Benta on August 11, 2018, 08:22:16 pm ---And No, the XOR does not "continually wobble", no idea where that came from.
--- End quote ---
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Your picture does not represent "wobble" in any way, the triangular waveform is synchronous to the PD and VCO and will not result in frequency or phase "wobble".
That aside, the scha002 and scha003 are the dodgiest application notes from TI ever, and were probably written by an intern during the summer vacation. I've ranted about those in other threads.
Zero999:
Here's a schematic of a tone decoder I found in a Forrest Mims book (I can't remember which one) I found awhile ago. It uses the '4001, D1, C4 and R5 as a tone decoder lock detector.
Benta:
--- Quote from: Hero999 on August 11, 2018, 09:47:43 pm ---Here's a schematic of a tone decoder I found in a Forrest Mims book (I can't remember which one) I found awhile ago. It uses the '4001, D1, C4 and R5 as a tone decoder.
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???
Zero999:
--- Quote from: Benta on August 11, 2018, 10:33:15 pm ---
--- Quote from: Hero999 on August 11, 2018, 09:47:43 pm ---Here's a schematic of a tone decoder I found in a Forrest Mims book (I can't remember which one) I found awhile ago. It uses the '4001, D1, C4 and R5 as a tone decoder.
--- End quote ---
???
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Yes, my fingers were faster than my brain. Fixed.
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