參數(shù)資料
型號(hào): ICS1493K-17LFT
元件分類: 時(shí)鐘產(chǎn)生/分配
英文描述: 48 MHz, PROC SPECIFIC CLOCK GENERATOR, QCC20
封裝: 4 X 4 MM, ROHS COMPLIANT, QFN-20
文件頁數(shù): 7/11頁
文件大?。?/td> 217K
代理商: ICS1493K-17LFT
Clock Synthesizer for Portable Systems
MDS 1493-17 A
5
Revision 101005
Integr ated Circuit System s
525 Ra ce Stree t, Sa n Jose, CA 951 26 te l (4 08) 297 -1201 www.icst.com
ICS1493-17
PRELIMINAR Y INFORMA T ION
AC Electrical Characteristics
Unless stated otherwise, VDDO = 2.5 V ±5%, Ambient Temperature -10
°C to +80°C
Note 1: Measured with a 5 pF load.
Note 2: Finish from prior cycle to start of new cycle.
Internal Pull-down Resistor
RPD
OE, 48M, 22M,
22/24M, 37M, 27M
75
250
k
Internal Pull-up Resistor
RPu
SCK, SDATA
100
500
k
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Units
Input Frequency
fIN
27
MHz
Output Rise Time
tOR
20% to 80%, Note 1
0.7
1.5
2.2
ns
Output Fall Time
tOF
80% to 20%, Note 1
0.7
1.5
2.2
ns
Output Impedance
RO
VO=VDDO/2
33
46
68
Output Clock Duty Cycle
VDDO/2, 27 MHz,
Note 1
40
50
60
%
VDDO/2, Note 1
45
50
55
%
Frequency Synthesis Error
All outputs
0
ppm
Modulation Rate
30
35
40
kHz
Short Term Jitter
Cycle-to-Cycle
150
300
ps
Long Term Jitter
27 MHz, n=1000
600
ps
Long Term Jitter
48 MHz, n=1000
800
ps
Long Term Jitter
22M and 22/24M,
n=1000
1.2
ns
Long Term Jitter
37 MHz non-spread,
n=1000
1.5
6
ns
Power-up Time
tPU
From minimum VDD
to outputs stable
1.5
3
ms
Output Enable Time
50
ns
Output Disable Time
20
ns
Switching Time
22/24M, Note 2
100
ns
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Units
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