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參數(shù)資料
| 型號(hào)： | SC3048B |
| 廠商： | RF Monolithics, Inc. |
| 英文描述： | 444.0 MHz Differential Sine-Wave Clock |
| 中文描述： | 444.0兆赫差分正弦波時(shí)鐘 |
| 文件頁數(shù)： | 2/2頁 |
| 文件大?。?/td> | 133K |
| 代理商： | SC3048B |
444.0 MHz Differential Sine-Wave Clock
RF Monolithics, Inc.
RFM Europe
1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.
Phone: (972) 233-2903
Phone: 44 1963 251383
Fax: (972) 387-9148
Fax: 44 1963 251510
E-mail: info@rfm.com
http://www.rfm.com
SC3048B-113000
Page 2 of 2
Electrical Connections
Case Design
All pads consist of 30 microinches (min) electroless gold on 50 micro-
inches (min) electroless nickel over base metal. The metallic center pad
was designed for mechanical support. Grounding of this pad is optional.
Lid symbolization, including terminal 1 locator dot, are in contrasting ink.
Symbolization varies by model number. For purposes of illustration, only
terminal 1 dot is shown.
Footprint
Actual size footprint:
Typical Printed Circuit Board Land Pattern
A typical land pattern for a circuit board is shown below. Grounding of the
metallic center pad is optional.
.
Typical Test Circuit
Timing Definitions
1
2
3
4
8
7
6
5
TOP VIEW
A
B
N
J
L
(X2)
D
(X8)
K
(X8)
C
H
G
M
(X3)
E
F
Typically 0.01" to 0.05" or 0.25 mm to
1.25 mm (8 Places)
(The optimum value of this dimension is
dependent on the PCB assembly process
employed.)
Clock
Under Test
Q
Tektronix
CSA 803
Digitizing
Oscilloscope
Ch 2
ENABLE
V
cc
Q
Ch 1
Trigger
50
*
*
*Power Splitter, Mini-Circuits ZFSC2-4
0.1
μ
F
Sine-Wave
Signal Generator
4.7
μ
H
50
50
V
cc
t
PD
Propagation Delay:
50%
ENABLE
Q or Q Output
Amplitude
Envelope
50%
90%
10%
Symmetry:
50%
50%
Q or Q Output
50%
Symmetry as
% of Period
Period
Symmetry as
% of Period
t
PD
Terminal
Number
1
Connection
V
CC
Ground
NC or Ground
Q Output
2
3
4
5
Q Output
6
7
8
Ground
ENABLE
Ground
LID
Dimensions
Millimeters
Inches
Min
Max
Min
Max
A
13.46
13.97
0.530
0.550
B
9.14
9.66
0.360
0.380
C
2.05 Nominal
0.081 Nominal
D
3.56 Nominal
0.141 Nominal
E
2.24 Nominal
0.088 Nominal
F
1.27 Nominal
0.050 Nominal
G
2.54 Nominal
0.100 Nominal
H
3.05 Nominal
0.120 Nominal
J
1.93 Nominal
0.076 Nominal
K
5.54 Nominal
0.218 Nominal
L
4.32 Nominal
0.170 Nominal
M
4.83 Nominal
0.190 Nominal
N
0.50 Nominal
0.020 Nominal
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