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參數(shù)資料
| 型號(hào)： | RO2115 |
| 英文描述： | Analog IC |
| 中文描述： | 模擬IC |
| 文件頁數(shù)： | 2/2頁 |
| 文件大?。?/td> | 174K |
| 代理商： | RO2115 |
433.42 MHz SAW Resonator
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
RO2112A-102899
Page 2 of 2
Electrical Connections
The SAW resonator is bidirectional and may be in-
stalled 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 recommend-
ed to help reduce parasitic capacitance in the cir-
cuit.
Typical Test Circuit
The test circuit inductor, L
TEST
, is tuned to resonate with the static capaci-
tance, C
O
, at F
C
.
Typical Application Circuits
Equivalent LC Mode
l
Temperature Characteristics
The curve shown on the right
accounts for resonator contri-
bution only and does not in-
clude LC component tempera-
ture contributions
.
Typical Circuit Board
Land Pattern
The circuit board land pattern shown below is one possible design. The op-
timum 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 mini-
mize parasitic series inductances.
Case Design
The case material is black alumina with contrasting symbolization. All pads
are nominally centered with respect to the base and consist of 60 to 100 mi-
croinches (min) electroless gold on 50 micorinches (min) electroless nickel.
NC
NC
Terminal
Terminal
From 50
Network Analyzer
Network Analyzer
To 50
ELECTRICAL TEST
+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
+VDC
Output
Dimensions
Millimeters
Inches
Min
Max
Min
Max
A
B
C
D
E
F
G
H
K
M
N
P
5.97
3.94
2.16
1.10
1.20
1.53
1.10
0.59
0.59
5.31
0.64
3.28
0.235
0.155
0.085
0.043
0.047
0.060
0.043
0.023
0.023
0.209
0.025
0.129
0.94
0.83
1.16
0.94
0.43
0.43
0.037
0.033
0.046
0.037
0.017
0.17
0.38
0.015
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 )
(
o
)
Typical Dimension:
0.010 to 0.047 inch
(0.25 to 1.20 mm)
(4 Places)
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