參數(shù)資料
型號: ICS8430DY-111T
英文描述: 700MHZ, LOW JITTER DIFFERENTIAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER
中文描述: 700MHz的低抖動差動對3.3的LVPECL頻率合成器
文件頁數(shù): 10/16頁
文件大?。?/td> 181K
代理商: ICS8430DY-111T
8430DY-111
www.icst.com/products/hiperclocks.html
REV. F JUNE 1, 2005
10
PRELIMINARY
Integrated
Circuit
Systems, Inc.
ICS8430-111
700MH
Z
, L
OW
J
ITTER
D
IFFERENTIAL
-
TO
-3.3V LVPECL F
REQUENCY
S
YNTHESIZER
Figure 4shows how the differential input can be wired to accept
single ended levels. The reference voltage V_REF = V
/2 is
generated by the bias resistors R1, R2 and C1. This bias circuit
should be located as close as possible to the input pin. The ratio
F
IGURE
4. S
INGLE
E
NDED
S
IGNAL
D
RIVING
D
IFFERENTIAL
I
NPUT
W
IRING
THE
D
IFFERENTIAL
I
NPUT
TO
A
CCEPT
S
INGLE
E
NDED
L
EVELS
of R1 and R2 might need to be adjusted to position the V_REF in
the center of the input voltage swing. For example, if the input
clock swing is only 2.5V and V
CC
= 3.3V, V_REF should be 1.25V
and R2/R1 = 0.609.
V_REF
R1
1K
C1
0.1u
R2
1K
Single Ended Clock Input
CLK
nCLK
VCC
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