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RO3138A_14

更新时间： 2024-02-23 09:07:06
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村田 - MURATA /
页数 文件大小 规格书
2页 178K
描述
407.3 MHz SAW RESONATOR

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RO3138A_14 数据手册

 浏览型号RO3138A_14的Datasheet PDF文件第2页 
RFM products are now  
Murata products.  
RO3138A  
• Designed for 407.3 MHz Transmitters  
• Very Low Series Resistance  
• Quartz Stability  
• Surface-mount Ceramic Case  
• Complies with Directive 2002/95/EC (RoHS)  
407.3 MHz  
SAW  
Pb  
Resonator  
The RO3138A is a one-port surface-acoustic-wave (SAW) resonator packaged in a surface-mount ceramic  
case. It provides reliable, fundamental-mode quartz frequency stabilization of fixed-frequency transmitters  
operating at 407.3 MHz.  
Absolute Maximum Ratings  
Rating  
Value  
+0  
Units  
dBm  
VDC  
°C  
CW RF Power Dissipation (See: Typical Test Circuit)  
DC voltage Between Terminals (Observe ESD Precautions)  
Case Temperature  
±30  
-40 to +85  
260  
Soldering Temperature (10 seconds / 5 cycles maximum)  
°C  
SM5035-4  
Electrical Characteristics  
Characteristic  
Sym  
Notes  
2,3,4,5  
2,5,6  
Minimum  
Typical  
Maximum  
407.375  
±75  
Units  
MHz  
kHz  
fC  
fC  
IL  
Center Frequency, +25 °C  
Absolute Frequency  
407.225  
Tolerance from 407.3 MHz  
Insertion Loss  
Quality Factor  
1.3  
14400  
1900  
25  
1.9  
dB  
QU  
QL  
TO  
fO  
Unloaded Q  
5,6,7  
50 Loaded Q  
Temperature Stability  
Turnover Temperature  
Turnover Frequency  
10  
40  
°C  
fC  
6,7,8  
ppm/°C2  
ppm/yr  
Frequency Temperature Coefficient  
Absolute Value during the First Year  
FTC  
|fA|  
0.032  
10  
Frequency Aging  
1
5
DC Insulation Resistance between Any Two Terminals  
1.0  
M  
RM  
LM  
RF Equivalent RLC Model  
Motional Resistance  
Motional Inductance  
Motional Capacitance  
Shunt Static Capacitance  
15.6  
87  
5, 7, 9  
µH  
fF  
CM  
1.8  
1.9  
77  
CO  
5, 6, 9  
2, 7  
pF  
nH  
LTEST  
Test Fixture Shunt Inductance  
Lid Symbolization (in addition to Lot and/or Date Codes)  
837 // YYWWS  
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.  
NOTES:  
1.  
Frequency aging is the change in f with time and is specified at +65 °C or  
subject to change without notice.  
C
7.  
8.  
Derived mathematically from one or more of the following directly  
measured parameters: f , IL, 3 dB bandwidth, f versus T , and C .  
less. Aging may exceed the specification for prolonged temperatures  
above +65 °C. Typically, aging is greatest the first year after manufacture,  
decreasing in subsequent years.  
C
C
C
O
Turnover temperature, T , is the temperature of maximum (or turnover)  
O
2.  
The center frequency, f , is measured at the minimum insertion loss point,  
frequency, f . The nominal frequency at any case temperature, T , may be  
C
O
C
IL , with the resonator in the 50 test system (VSWR 1.2:1). The  
2
MIN  
calculated from: f = f [1 - FTC (T -T ) ]. Typically oscillator T is  
O
O
C
O
shunt inductance, L  
, is tuned for parallel resonance with C at f .  
TEST  
O C  
approximately equal to the specified resonator T .  
This equivalent RLC model approximates resonator performance near the  
resonant frequency and is provided for reference only. The capacitance C  
is the static (nonmotional) capacitance between the two terminals  
measured at low frequency (10 MHz) with a capacitance meter. The  
measurement includes parasitic capacitance with "NC” pads unconnected.  
Case parasitic capacitance is approximately 0.05 pF. Transducer parallel  
capacitance can by calculated as: C C - 0.05 pF.  
O
Typically, f  
or f  
is approximately equal to the  
OSCILLATOR  
TRANSMITTER  
9.  
resonator f .  
C
O
3.  
4.  
One or more of the following United States patents apply: 4,454,488 and  
4,616,197.  
Typically, equipment utilizing this device requires emissions testing and  
government approval, which is the responsibility of the equipment  
manufacturer.  
P
O
5.  
6.  
Unless noted otherwise, case temperature T = +25 ± 2 °C.  
C
10. Tape and Reel standard per ANSI / EIA 481.  
The design, manufacturing process, and specifications of this device are  
©2010-2014 by Murata Electronics N.A., Inc.  
RO3138A (R) 4/23/14  
Page 1 of 2  
www.murata.com  
12

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