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參數(shù)資料
| 型號： | TLC2942PW |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | HIGH-PERFORMANCE DUAL PHASE-LOCKED LOOP BUILDING BLOCK |
| 中文描述： | 高效能雙鎖相環(huán)積木 |
| 文件頁數(shù)： | 23/28頁 |
| 文件大?。?/td> | 459K |
| 代理商： | TLC2942PW |
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TLC2942
HIGH-PERFORMANCE DUAL PHASE-LOCKED LOOP BUILDING BLOCK
SLAS146B – NOVEMBER 1996 – REVISED JUNE 1997
23
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
and the transfer function for frequency is:
FOUT(s)
FREF(s)
Kp
(T1
KV
T2)
1
s
T2
T2
T2)
s2
s
1
KpKV
N (T1
KpKV
N (T1
T2)
(6)
The standard two-pole denominator is D = s
2
+ 2
ζ ω
n
s +
ω
n2
and comparing the coefficients of the denominator
of equation 5 and 6 with the standard two-pole denominator gives the following results:
n
Kp
KV
N
(T1
T2)
Solving for T1 + T2
T1
T2
Kp
N
KV
2
n
(7)
and by using this value for T1 + T2 in equation 7 the damping factor is:
n
2
T2
N
Kp
KV
solving for T2:
T2
2
–
N
Kp
KV
then by substituting for T2 in equation 7 and solving for T1 as given in equation 10:
T1
KV
N
Kp
2
n
–2
n
N
Kp
KV
(8)
(9)
(10)
From the circuit constants and the initial design parameters then:
R2
2
n
N
Kp
KV
1
C1
R1
Kp
Kv
N
2
n
2
n
N
Kp
KV
1
C1
(11)
(12)
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