Part number:
AN97
Manufacturer:
Maxim Integrated ↗ Products
File Size:
465.28 KB
Description:
Telephone tone generator requires no trimming.
AN97_MaximIntegratedProducts.pdf
Datasheet Details
Part number:
AN97
Manufacturer:
Maxim Integrated ↗ Products
File Size:
465.28 KB
Description:
Telephone tone generator requires no trimming.
AN97, Telephone Tone Generator Requires No trimming
SIGNAL GENERATION CIRCUITS Application Note 97: Jul 09, 1998 Telephone Tone Generator Requires No Trimming Many products that connect to phone lines (modems, for instance) incorporate a "callprogress monitoring" function known as CPM.
CPM circuits "listen" to the lines as a human would, and respond according to what they "hear." You shouldn't dial a number unless you first hear a dial tone, for example.
Neither should your computer.
Tone accuracy is not very important when people monitor the c
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