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參數(shù)資料
| 型號： | M3541 |
| 廠商： | 意法半導體 |
| 英文描述： | Single Number Pulse Tone Switchable Dialer(脈沖語音開關撥號器) |
| 中文描述： | 單數(shù)脈沖切換撥號音（脈沖語音開關撥號器） |
| 文件頁數(shù)： | 9/12頁 |
| 文件大小： | 165K |
| 代理商： | M3541 |
Figure 7.
SWITCHABLE LD/MF APPLICATION CIRCUITS
Thecircuitinfigure7usesaconstantcurrent supply
totakecurrentfromthetelephonelinewhichis used
to power theM3541.The 2.5Vreferencediode pro-
ducesastabilised supplyvoltage which determines
the MF tonelevel of the M3541.
In figure 8, a stabilising voltage from the speechis
usedto supplytheM3541duringMF diallingto give
accurate tonelevels.
The M3541 is poweredvia the 150K resistorduring
TBR operationsandLD dialling breaks, and via Q1
during dialling makes. Thisconfigurationminimises
the component count at the expense of allowing a
leakage current of about 450
μ
A during dialling
breaks.The47
μ
F reservoircapacitormaintainsand
smoothsthe supply to the chip.
Figure8.
M3541
9/12
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相關代理商/技術參數(shù) |
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|---|---|
| M3542 | 制造商:BALDOR MOTORS 功能描述: 制造商:Baldor Electric Company 功能描述: |
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