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参数资料
| 型号： | RO2103A |
| 厂商： | RFM |
| 文件页数： | 2/2页 |
| 文件大小： | 0K |
| 描述： | SAW RESONATOR 418MHZ SMD |
| 标准包装： | 2,500 |
| 系列： | RO2103A |
| 频率： | 418MHz |
| 类型： | SAW |
| 频率稳定性： | ±0.032ppm |
| 频率公差： | ±75kHz |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 4-SMD |
| 尺寸/尺寸： | 0.236" L x 0.158" W（6.00mm x 4.00mm） |
| 高度： | 0.090"（2.29mm） |
| 包装： | 散装 |
| 其它名称： | Q4167261 |
Electrical Connections
Equivalent LC Mode l
The SAW resonator is bidirectional and may be
installed with either orientation. The two terminals
Terminal
0.05 pF*
are interchangeable and unnumbered. The callout
NC indicates no internal connection. The NC pads
NC
NC
Cp
Co = Cp + 0.05 pF
*Case Parasitics
assist with mechanical positioning and stability.
Terminal
External grounding of the NC pads is
recommended to help reduce parasitic
Rm
Lm
Cm
capacitance in the circuit.
Temperature Characteristics
Typical Test Circuit
The test circuit inductor, L TEST , is tuned to resonate with the static
capacitance, C O , at F C .
The curve shown on the right
accounts for resonator
contribution only and does not
include LC component
temperature contributions.
0
-50
-100
-150
-200
f C = f O , T C = T O
0
-50
-100
-150
-200
ELECTRICAL TEST
Typical Circuit
Land Pattern
Board
-80 -60 -40 -20 0 +20 +40 +60 +80
Δ T = T C - T O ( °C )
From 50 Ω
Network Analyzer
To 50 Ω
Network Analyzer
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.
(4 Places)
Typical Dimension:
0.010 to 0.047 inch
(0.25 to 1.20 mm)
Case Design
The case material is black alumina with contrasting symbolization. All pads
are nominally centered with respect to the base and consist of 40 to
70 microinches electroless gold on 60-350 micorinches electroless nickel.
Typical Application Circuits
Typical Low-Power Transmitter Application
+9VDC
Modulation
Input
200k Ω
C1
L1
47
(Antenna)
ROXXXXA
Bottom View
C2
RF Bypass
Dimensions
Millimeters
Inches
470
A
B
Min
5.74
3.73
Max
5.99
3.99
Min
0.226
0.147
Max
0.236
0.157
Typical Local Oscillator Application
Output
C
D
E
1.70
0.94
0.83
2.29
1.10
1.20
0.067
0.037
0.033
0.090
0.043
0.047
+VDC
C1
L1
+VDC
F
G
1.16
0.94
1.53
1.10
0.046
0.037
0.060
0.043
H
K
0.43
0.43
0.59
0.59
0.017
0.017
0.023
0.023
ROXXXXA
Bottom View
C2
RF Bypass
M
N
P
5.08
0.38
3.05
5.33
0.64
3.30
0.200
0.015
0.120
0.210
0.025
0.130
www.RFM.com E-mail: info@rfm.com
?2008 by RF Monolithics, Inc.
Page 2 of 2
RO2103A - 3/24/08
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参数描述 |
|---|---|
| RO2104 | 制造商:RF Monolithics (RFM) 功能描述:RESONATOR 303.825MHZ TH 3TO-39 - Rail/Tube |
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| RO2104D | 制造商:RFM 制造商全称:RF Monolithics, Inc 功能描述:303.825 MHz SAW Resonator |
| RO2106 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog IC |
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