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Electrical Connections
The SAW resonator is bidirectional and
may be installed with either orientation.
Pin
1
NC
Connection
Power Test
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
2
3
4
5
Terminal
NC
NC
Terminal
50 Ω Source
at F C
P INCIDENT
P REFLECTED
Low-Loss
Matching
Network to
50 Ω
6
1
2
5
3
4
NC pads is recommended to help reduce
parasitic capacitance in the circuit.
6
NC
Typical Application Circuits
B
C
G
H
Typical Low-Power Transmitter Application
1
6
6
1
Modulation
200k Ω
+9VDC
Input
C1
A 2
5
E
5
2
I
L1
47
(Antenna)
3
4
D
4
J
3
6
1
2
5
3
4
C2
ROXXXXC
Bottom View
470
RF Bypass
Case Dimensions
Typical Local Oscillator Application
Output
Dimension
Min
mm
Nom
Max
Min
Inches
Nom
Max
+VDC
200k Ω
C1
L1
+VDC
A
3.60
3.80
4.0
0.14
0.15
0.16
B
C
D
E
3.60
1.00
0.95
2.39
3.80
1.20
1.10
2.54
4.0
1.40
1.25
2.69
0.14
0.04
0.033
0.090
0.15
0.05
0.043
0.10
0.16
0.055
0.05
0.110
ROXXXXC
Bottom View
6
1
2
5
3
4
C2
RF Bypass
G
H
I
0.90
1.90
0.50
1.0
2.0
0.6
1.10
2.10
0.70
0.035
0.75
0.020
0.04
0.08
0.024
0.043
0.83
0.028
J
1.70
1.8
1.90
0.067
0.07
0.075
Equivalent LC Model
0.05 pF*
Typical Test Circuit
The test circuit inductor, L TEST , is tuned to resonate with the static
capacitance, C O , at F C .
Cp
Co = Cp + 0.05 pF
*Case Parasitics
Electrical Test
Rm
Lm
Cm
Temperature Characteristics
The curve shown on the right accounts for resonator contribution only and
does not include LC component temperature contributions.
6
1
0
f C = f O , T C = T O
0
From 50 Ω
5
2
To 50 Ω
-50
-50
Network Analyzer
Network Analyzer
4
3
-100
-150
-200
-80 -60 -40 -20
-100
-150
-200
0 +20 +40 +60 +80
Δ T = T C - T O ( °C )
www.RFM.com E-mail: info@rfm.com
?2008 by RF Monolithics, Inc.
Page 2 of 2
RO3112D - 3/27/08
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相关代理商/技术参数
RO3112E 功能描述:谐振器 433.42 MHz +/-75kHz Single Port RoHS:否 制造商:Murata 频率:30 MHz 容差:25 PPM 系列:XRCGB 端接类型:SMD/SMT 工作温度范围:- 10 C to + 70 C 尺寸:1.6 mm W x 2 mm L x 0.65 mm H 封装:Reel
RO3115A 制造商:RF Monolithics (RFM) 功能描述:417.5 MHZ SAW RESONATOR - Tape and Reel
RO3118 功能描述:谐振器 318.0 MHz +/-75kHz Single Port RoHS:否 制造商:Murata 频率:30 MHz 容差:25 PPM 系列:XRCGB 端接类型:SMD/SMT 工作温度范围:- 10 C to + 70 C 尺寸:1.6 mm W x 2 mm L x 0.65 mm H 封装:Reel
RO3118A 功能描述:谐振器 318.0 MHz +/-75kHz Single Port RoHS:否 制造商:Murata 频率:30 MHz 容差:25 PPM 系列:XRCGB 端接类型:SMD/SMT 工作温度范围:- 10 C to + 70 C 尺寸:1.6 mm W x 2 mm L x 0.65 mm H 封装:Reel
RO3118D 功能描述:谐振器 318.0 MHz +/-75kHz Single Port RoHS:否 制造商:Murata 频率:30 MHz 容差:25 PPM 系列:XRCGB 端接类型:SMD/SMT 工作温度范围:- 10 C to + 70 C 尺寸:1.6 mm W x 2 mm L x 0.65 mm H 封装:Reel
RO3118E 功能描述:谐振器 318.0 MHz +/-75kHz Single Port RoHS:否 制造商:Murata 频率:30 MHz 容差:25 PPM 系列:XRCGB 端接类型:SMD/SMT 工作温度范围:- 10 C to + 70 C 尺寸:1.6 mm W x 2 mm L x 0.65 mm H 封装:Reel
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RO3120A 功能描述:谐振器 403.55MHz BW 75KHz IL 1.1dB Typ. SAW RoHS:否 制造商:Murata 频率:30 MHz 容差:25 PPM 系列:XRCGB 端接类型:SMD/SMT 工作温度范围:- 10 C to + 70 C 尺寸:1.6 mm W x 2 mm L x 0.65 mm H 封装:Reel