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RO2122A

更新时间： 2024-02-11 02:15:38
品牌 Logo 应用领域
RFM 谐振器
页数 文件大小 规格书
2页 97K
描述
293.125 MHz SAW Resonator

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RO2122A 技术参数

生命周期：Obsolete包装说明：ROHS COMPLIANT, CERAMIC, CASE SM-2, 4 PIN
Reach Compliance Code：unknown风险等级：5.84
晶体/谐振器类型：1-PORT频率容差 (MHz)：0.1
插入损耗：1.5 dBJESD-609代码：e4
安装特点：SURFACE MOUNT标称工作频率：293.125 MHz
并联电容：3.45 pF物理尺寸：L5.99XB3.99XH2.29 (mm)/L0.236XB0.157XH0.09 (inch)
表面贴装：YES端子面层：GOLD
Base Number Matches：1

RO2122A 数据手册

 浏览型号RO2122A的Datasheet PDF文件第1页 
293.125 MHz  
SAW Resonator  
Electrical Connections  
Equivalent LC Model  
Terminal  
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.  
0.05 pF*  
NC  
NC  
+
C
=
C
o
0.05 pF  
p
C
p
*Case Parasitics  
Terminal  
Lm  
Cm  
Rm  
Temperature Characteristics  
The curve shown on the right  
fC = fO , T C = TO  
0
0
Typical Test Circuit  
accounts for resonator contri-  
-50  
bution only and does not in-  
-100  
-50  
The test circuit inductor, L  
, is tuned to resonate with the static capaci-  
TEST  
-100  
-150  
-200  
tance, C , at F .  
O
C
clude LC component tempera-  
-150  
ture contributions.  
-200  
-80 -60 -40 -20  
0
+20 +40 +60 +80  
ELECTRICAL TEST  
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.  
T = TC - TO ( °C )  
D
W
W
From 50  
To 50  
Network Analyzer  
Network Analyzer  
(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  
47  
200k  
W
Modulation  
Input  
C1  
L1  
(Antenna)  
C2  
ROXXXXA  
Bottom View  
Millimeters  
Inches  
RF Bypass  
Dimensions  
Min  
Max  
Min  
Max  
470  
A
B
C
D
E
F
5.74  
3.73  
1.91  
0.94  
0.83  
1.16  
0.94  
0.43  
0.43  
5.08  
0.38  
3.05  
5.99  
3.99  
2.16  
1.10  
1.20  
1.53  
1.10  
0.59  
0.59  
5.33  
0.64  
3.30  
0.226  
0.147  
0.075  
0.037  
0.033  
0.046  
0.037  
0.017  
0.017  
0.200  
0.015  
0.120  
0.236  
0.157  
0.085  
0.043  
0.047  
0.060  
0.043  
0.023  
0.023  
0.210  
0.025  
0.130  
Typical Local Oscillator Application  
Output  
+VDC  
+VDC  
C1  
G
H
K
M
N
P
L1  
C2  
ROXXXXA  
Bottom View  
RF Bypass  
RF Monolithics, Inc.  
RFM Europe  
Phone: (972) 233-2903  
Phone: 44 1963 251383  
Fax: (972) 387-8148  
Fax: 44 1963 251510  
E-mail: info@rfm.com  
http://www.rfm.com  
RO2122A-062001  
Page 2 of 2  
©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.  
12

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