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RO2188A

更新时间： 2024-09-17 09:45:23
品牌 Logo 应用领域
RFM 晶体谐振器
页数 文件大小 规格书
2页 95K
描述
390.0 MHz SAW Resonator

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RO2188A 数据手册

 浏览型号RO2188A的Datasheet PDF文件第2页 
®
RO2188A  
•
•
•
•
•
Ideal for 390.0 MHz Transmitters  
Very Low Series Resistance  
Quartz Stability  
Rugged, Hermetic, Surface Mount SM-2 Package  
Complies with Directive 2002/95/EC (RoHS)  
390.0 MHz  
SAW  
Resonator  
The RO2188 is a true one-port, surface-acoustic-wave (SAW) resonator in SM-2 case. It provides reliable,  
fundamental-mode, quartz frequency stabilization of fixed-frequency transmitters operating at 390.0 MHz.  
Absolute Maximum Ratings  
Rating  
Value  
+5  
Units  
dBm  
VDC  
°C  
CW RF Power Dissipation  
DC Voltage Between Any Two Pins (Observe ESD Precautions)  
Case Temperature  
±30  
-40 to +85  
260  
Soldering Temperature (10 seconds / 5 cycles max.)  
°C  
SM-2 Case  
Electrical Characteristics  
Characteristic  
Sym  
Notes  
Minimum  
Typical  
Maximum  
Units  
Center Frequency at +25 °C  
Absolute Frequency  
f
389.900  
390.100  
MHz  
kHz  
dB  
C
2, 3, 4, 5  
Tolerance from 304.0 MHz  
Df  
±100  
2.0  
C
Insertion Loss  
Quality Factor  
IL  
0.9  
12,000  
1,200  
42  
2, 5, 6  
5, 6, 7  
Unloaded Q  
Q
U
50 W Loaded Q  
Q
L
Temperature Stability  
Turnover Temperature  
Turnover Frequency  
T
f
27  
1.0  
3.6  
57  
°C  
O
f -5  
6, 7, 8  
kHz  
O
C
2
Frequency Temperature Coefficient  
Absolute Value during the First Year  
FTC  
|fA|  
0.037  
ppm/°C  
Frequency Aging  
£10  
ppm/yr  
MW  
W
1
5
DC Insulation Resistance between Any Two Terminals  
RF Equivalent RLC Model  
Motional Resistance  
R
L
11  
54.963  
3.0299  
3.9  
26  
M
Motional Inductance  
µH  
5, 7, 9  
M
Motional Capacitance  
C
fF  
M
O
Pin 1 to Pin 2 Static Capacitance  
Transducer Static Capacitance  
C
5, 6, 9  
5, 6, 7, 9  
2, 7  
4.2  
pF  
C
3.65  
43  
pF  
P
Test Fixture Shunt Inductance  
Lid Symbolization  
L
TEST  
nH  
E319  
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.  
Notes:  
1.  
2.  
Lifetime (10 year) frequency aging.  
parameters: fC, IL, 3 dB bandwidth, fC versus TC, and CO.  
The center frequency, fC, is measured at the minimum insertion loss point,  
8.  
Turnover temperature, TO, is the temperature of maximum (or turnover) fre-  
quency, fO. The nominal frequency at any case temperature, TC, may be cal-  
ILMIN, with the resonator in the 50 W test system (VSWR £ 1.2:1). The shunt  
inductance, LTEST, is tuned for parallel resonance with CO at fC.  
culated from: f = fO [1 - FTC (TO -TC)2].  
3.  
4.  
One or more of the following United States patents apply: 4,454,488 and  
4,616,197.  
9.  
This equivalent RLC model approximates resonator performance near the  
resonant frequency and is provided for reference only. The capacitance CO is  
Typically, equipment utilizing this device requires emissions testing and gov-  
ernment approval, which is the responsibility of the equipment manufacturer.  
Unless noted otherwise, case temperature TC = +25°C±2°C.  
the static (nonmotional) capacitance between the two terminals measured at  
low frequency (10 MHz) with a capacitance meter. The measurement  
includes parasitic capacitance with a floating case. Case parasitic capaci-  
tance is approximately 0.25pF. Transducer parallel capacitance can be cal-  
culated as: CP » CO - 0.25pF.  
5.  
6.  
The design, manufacturing process, and specifications of this device are sub-  
ject to change without notice.  
7.  
Derived mathematically from one or more of the following directly measured  
RF Monolithics, Inc.  
RFM Europe  
Phone: (972) 233-2903  
Phone: 44 1963 251383  
Fax: (972) 387-9148  
Fax: 44 1963 251510  
E-mail: info@rfm.com  
http://www.rfm.com  
RO2188A-062001  
Page 1 of 2  
©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.  
12

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