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參數(shù)資料
| 型號(hào)： | RP1234 |
| 廠商： | RF MONOLITHICS INC |
| 元件分類： | SAW諧振器 |
| 英文描述： | 2-PORT SAW RESONATOR, 293.075 MHz |
| 文件頁(yè)數(shù)： | 2/4頁(yè) |
| 文件大小： | 162K |
| 代理商： | RP1234 |
Rating
Value
Units
CW RF Power Dissipation (See: Typical Test Circuit)
+0
dBm
DC Voltage Between Any Two Pins (Observe ESD Precautions)
±30
VDC
Case Temperature
-40 to +85
°C
Typical Test Circuit
Typical Application Circuits
Simulated One-Port Design:
Conventional Two-Port Design:
Equivalent LC Model
Temperature Characteristics
Typical Circuit Board Land Pattern
The circuit board land pattern shown below is one possible de-
sign. The optimum land pattern is dependent on the circuit
board assembly process which varies by manufacturer. The
distance between adjacent land edges should be at a maximum
to minimize parasitic ca-
pacitance.
Trace lengths
from terminal lands to oth-
er components should be
short and wide to minimize
parasitic series inductanc-
es.
Case Design SM-4A
Pin
Connection
1
Input or Output
2
Output or Input
3
Case Ground
4
Case Ground
Electrical Test:
+
Dimensions
SM-4A
Inches
Millimeters
Nominal
A
0.205
5.21
B
0.265
6.73
C
0.078
1.98
D
0.071
1.80
E
0.057
1.45
F
0.150
3.81
G
0.050
1.27
H
0.075
1.91
C
M
C o
R
M
L
M
1
2
3 & 4
-80 -60 -40 -20
0 +20 +40 +60
0
-50
-100
-150
+80
-200
0
-50
-100
-150
-200
f
C = f O , T C = T O
T = T
C - T O ( °C )
(f-
f o
o
) /
f
(ppm
)
The curve shown on
the right accounts for
resonator contribution
only and does not in-
clude LC component
temperature
contribu-
tions.
Electrical Connections
This two-port, three-terminal SAW resonator is bidirectional.
However, impedances and circuit board parasitics may not be
symmetrical, requiring slightly different oscillator component-
matching values.
Absolute Maximum Ratings
23
50 Source
at F
C
INCIDENT
P
REFLECTED
P
Low-Loss
Matching
Network to
50
CW RF Power Dissipation =
INCIDENT
P
REFLECTED
P
-
Power Test:
RP Series SM-4A Two-Port SAW Resonators
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