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參數(shù)資料
| 型號： | RO2109 |
| 廠商： | RF MONOLITHICS INC |
| 元件分類： | SAW諧振器 |
| 英文描述： | 1-PORT SAW RESONATOR, 300 MHz |
| 文件頁數(shù)： | 2/6頁 |
| 文件大?。?/td> | 203K |
| 代理商： | RO2109 |
Electrical Connections
The SAW resonator is bidirectional and may be installed with
either orientation. The two terminals are interchangeable and
unnumbered. The callout NC indicates no internal connection.
The NC pads assist with mechanical
positioning and stability. External
grounding of the NC pads is
recommended to help reduce
parasitic capacitance in the circuit.
Typical Test Circuit
The test circuit inductor, LTEST, is tuned to resonate with the
static capacitance, CO, at FC.
Typical Application Circuits
Equivalent LC Mode
l
The following equivalent LC model is valid near resonance:
Temperature Characteristics
The curve shown on
the right accounts for
resonator contribution
only and does not in-
clude LC component
temperature contribu-
tions.
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 capacitance. Trace lengths from terminal
lands to other components
should be short and wide to
minimize parasitic series in-
ductances.
Case Design
The case material is black alumina with contrasting symboliza-
tion. All pads are nominally centered with respect to the base
and consist of 40 to 60 microinches (min) electroless gold on
50 microinches (min) electroless nickel.
+9VDC
47
RF Bypass
L1
(Antenna)
C1
C2
200k
Modulation
Input
ROXXXXA
Bottom View
470
Typical Low-Power Transmitter Application
RF Bypass
L1
C1
C2
ROXXXXA
Bottom View
Typical Local Oscillator Application
+VDC
Output
0.05 pF*
0.05 pF
Cp
Co
+
=
*Case Parasitics
Cp
Rm
Lm
Cm
-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
)
Typical Dimension:
0.010 to 0.047 inch
(0.25 to 1.20 mm)
(4 Places)
Dimensions
Millimeters
Inches
Min
Max
Min
Max
A
5.97
0.235
B
3.94
0.155
C
2.16
0.085
D
0.94
1.10
0.037
0.043
E
0.83
1.20
0.033
0.047
F
1.16
1.53
0.046
0.060
G
0.94
1.10
0.037
0.043
H
0.43
0.59
0.017
0.023
K
0.43
0.59
0.17
0.023
M
5.31
0.209
N
0.38
0.64
0.015
0.025
P
3.28
0.129
17
From 50
Network Analyzer
To 50
ELECTRICAL TEST
NC
Terminal
RO Series SM-2 One-Port SAW Resonators
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PDF描述 |
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| RO2174A | 1-PORT SAW RESONATOR, 431 MHz |
| RO2023-12 | 1-PORT SAW RESONATOR, 433.97 MHz |
| RO2065 | 1-PORT SAW RESONATOR, 423.27 MHz |
| RO2112A-17 | 1-PORT SAW RESONATOR, 433.42 MHz |
| RO2112C | 1-PORT SAW RESONATOR, 433.42 MHz |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| RO2112 | 制造商:RFM 制造商全稱:RF Monolithics, Inc 功能描述:433.42 MHz SAW Resonator |
| RO2112A | 制造商:RFM 制造商全稱:RF Monolithics, Inc 功能描述:433.42 MHz SAW Resonator |
| RO2112C | 制造商:RFM 制造商全稱:RF Monolithics, Inc 功能描述:433.420 MHz SAW Resonator |
| RO2112D | 制造商:RFM 制造商全稱:RF Monolithics, Inc 功能描述:433.420 MHz SAW Resonator |
| RO2112E | 制造商:RFM 制造商全稱:RF Monolithics, Inc 功能描述:433.420 MHz SAW Resonator |
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