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參數(shù)資料
| 型號(hào)： | RO3193A |
| 廠商： | RF MONOLITHICS INC |
| 元件分類： | SAW諧振器 |
| 英文描述： | 1-PORT SAW RESONATOR, 379.3 MHz |
| 封裝： | ROHS COMPLIANT, CERAMIC, CASE SM5035-4, 4 PIN |
| 文件頁(yè)數(shù)： | 2/2頁(yè) |
| 文件大?。?/td> | 68K |
| 代理商： | RO3193A |
379.3 MHz
SAW Resonator
www.RFM.com E-mail: info@rfm.com
Page 2 of 2
2008 by RF Monolithics, Inc.
RO3193A - 10/1/08
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, LTEST, is tuned to resonate with the static capaci-
tance, CO, at FC.
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
Terminal
C
a
s
e
G
ro
u
n
d
C
a
s
e
G
ro
u
n
d
ELECTRICAL TEST
From 50
Network Analyzer
To 50
Network Analyzer
50 Source
at F
C
REFLECTED
INCIDENT
P
Low-Loss
Matching
Network to
50
Terminal
NC
POWER TEST
CW RF Power Dissipation =
INCIDENT -
REFLECTED
P
C1
C2
L1
(Antenna)
+9VDC
47
RF Bypass
Modulation
Input
Typical Low-Power Transmitter Application
RO3XXXA
Bottom View
470
200k
C1
C2
L1
Output
+VDC
RF Bypass
+VDC
Typical Local Oscillator Applications
RO3XXXA
Bottom View
Dimensions
Millimeters
Inches
Min
Nom
Max
Min
Nom
Max
A
4.87
5.0
5.13
.191
.196
.201
B
3.37
3.5
3.63
.132
.137
.142
C
1.45
1.531.60.057
.060.062
D
1.35
1.431.50.040
.057.059
E
.67
.80
.93
.026
.031
.036
F
.37
.50
.63
.014
.019
.024
G
1.07
1.201.33.042
.047.052
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
) /
f
(p
p
m
)
Typical Dimension:
0.010 to 0.047 inch
(0.25 to 1.20 mm)
(4 Places)
A
B
C
D
E (3x)
F (4x)
G (1x
Top View
Side View
Bottom View
1
2
3
4
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