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参数资料
| 型号： | TLC2942IDBLE |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | PLL合成/DDS/VCOs |
| 英文描述： | PHASE LOCKED LOOP, 20 MHz, PDSO38 |
| 封装： | PLASTIC, SO-38 |
| 文件页数： | 16/29页 |
| 文件大小： | 473K |
| 代理商： | TLC2942IDBLE |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页当前第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页
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:
F
OUT(s)
F
REF(s)
+
Kp
@ KV
(T1
) T2)
1
) s
@ T2
s2
) s
@ 1 )
Kp
@K
V
@T2
N
@(T1)T2)
)
Kp
@KV
N
@(T1)T2)
(6)
The standard two-pole denominator is D = s2 + 2
ζ ωn s + ωn2 and comparing the coefficients of the denominator
of equation 5 and 6 with the standard two-pole denominator gives the following results:
wn +
Kp
@ KV
N
@ (T1 ) T2)
Solving for T1 + T2
T1
) T2 +
Kp
@ KV
N
@ w 2
n
(7)
and by using this value for T1 + T2 in equation 7 the damping factor is:
z +
wn
2 @
T2
)
N
Kp
@ K
V
solving for T2:
T2
+
2
z
w –
N
Kp
@ K
V
then by substituting for T2 in equation 7 and solving for T1 as given in equation 10:
T1
+
K
V
@ Kp
N
@ w 2
n
–
2
z
w
n
)
N
Kp
@ K
V
(8)
(9)
(10)
From the circuit constants and the initial design parameters then:
R2
+
2
z
wn *
N
Kp
@ KV
1
C1
R1
+
Kp
@ Kv
w 2
n @
N
*
2
z
wn )
N
Kp
@ KV
1
C1
(11)
(12)
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相关代理商/技术参数 |
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| TLC2942IDBR | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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