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參數(shù)資料
| 型號(hào)： | RO3138A |
| 廠商： | RF MONOLITHICS INC |
| 元件分類： | SAW諧振器 |
| 英文描述： | 1-PORT SAW RESONATOR, 407.3 MHz |
| 封裝： | ROHS COMPLIANT, CERAMIC, CASE SM5035-4 |
| 文件頁(yè)數(shù)： | 2/2頁(yè) |
| 文件大小： | 66K |
| 代理商： | RO3138A |
www.RFM.com E-mail: info@rfm.com
Page 2 of 2
2008 by RF Monolithics, Inc.
RO3138A - 1/6/09
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 Model
Temperature Characteristics
The curve shown on the right
accounts for resonator
contribution only and does not
include LC component
temperature contributions.
Typical Circuit Board
Land Pattern
The circuit board land pattern
shown below is one possible
design. 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 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
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
1.53
1.60
.057
.060
.062
D
1.35
1.43
1.50
.040
.057
.059
E
.67
.80
.93
.026
.031
.036
F
.37
.50
.63
.014
.019
.024
G
1.07
1.20
1.33
.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
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| RO3144D-2 | 1-PORT SAW RESONATOR, 916.5 MHz |
| RO3144D | 1-PORT SAW RESONATOR, 916.5 MHz |
| RO3144D-1 | 1-PORT SAW RESONATOR, 916.5 MHz |
| RO3144E-1 | 1-PORT SAW RESONATOR, 916.5 MHz |
| RO3144E-2 | 1-PORT SAW RESONATOR, 916.5 MHz |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| RO3144 | 功能描述:諧振器 916.5 MHz +/-200kHz Single Port RoHS:否 制造商:Murata 頻率:30 MHz 容差:25 PPM 系列:XRCGB 端接類型:SMD/SMT 工作溫度范圍:- 10 C to + 70 C 尺寸:1.6 mm W x 2 mm L x 0.65 mm H 封裝:Reel |
| RO3144A | 功能描述:諧振器 916.5 MHz +/-200kHz Single Port RoHS:否 制造商:Murata 頻率:30 MHz 容差:25 PPM 系列:XRCGB 端接類型:SMD/SMT 工作溫度范圍:- 10 C to + 70 C 尺寸:1.6 mm W x 2 mm L x 0.65 mm H 封裝:Reel |
| RO3144A-1 | 功能描述:諧振器 916.5 MHz +/-150kHz Single Port RoHS:否 制造商:Murata 頻率:30 MHz 容差:25 PPM 系列:XRCGB 端接類型:SMD/SMT 工作溫度范圍:- 10 C to + 70 C 尺寸:1.6 mm W x 2 mm L x 0.65 mm H 封裝:Reel |
| RO3144A-2 | 功能描述:諧振器 916.5 MHz +/-100kHz Single Port RoHS:否 制造商:Murata 頻率:30 MHz 容差:25 PPM 系列:XRCGB 端接類型:SMD/SMT 工作溫度范圍:- 10 C to + 70 C 尺寸:1.6 mm W x 2 mm L x 0.65 mm H 封裝:Reel |
| RO3144C | 功能描述:諧振器 916.5 MHz +/-200kHz Single Port RoHS:否 制造商:Murata 頻率:30 MHz 容差:25 PPM 系列:XRCGB 端接類型:SMD/SMT 工作溫度范圍:- 10 C to + 70 C 尺寸:1.6 mm W x 2 mm L x 0.65 mm H 封裝:Reel |
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