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參數(shù)資料
| 型號： | MSM7557 |
| 廠商： | OKI SEMICONDUCTOR CO., LTD. |
| 英文描述： | Single Chip MSK Modem with Compandor for Cordless Telephone |
| 中文描述： | 單芯片MSK調(diào)制解調(diào)器無繩電話與Compandor |
| 文件頁數(shù)： | 17/25頁 |
| 文件大?。?/td> | 153K |
| 代理商： | MSM7557 |
17/25
MSM7557
Semiconductor
OPERATION DESCRIPTION
Limiter Circuit
A
+
–
R11
R12
LIM
HPF1 or PRE – EMPHASIS
Limiter
Reverse
Splatter filter
R11 : 1 k
W
R12 : 200 k
W
DYN = "0"
DYN = "1"
: Clamp level = VSG
±
0.50 V
: Clamp level = VSG
±
1.26 V
2. In case of using external voltage reference
LIM pin shall be supplied over VSG voltage.
Notes
1 ) R11 is protection resister from external extra voltage.
2 ) Resistor value of R11 and R12 changes 0.7 to 1.3 times from the typical value
by lot variation and temperature variation.
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