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RO3075A PDF预览

RO3075A

更新时间: 2024-11-22 01:26:11
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村田 - MURATA /
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2页 392K
描述
345.00 MHz SAW Resonator

RO3075A 数据手册

 浏览型号RO3075A的Datasheet PDF文件第2页 
RO3075A  
• Designed for 345.0 MHz Transmitters  
• Very Low Series Resistance  
• Quartz Stability  
• Surface-mount Ceramic Case  
• Complies with Directive 2002/95/EC (RoHS)  
345.0 MHz  
SAW  
Pb  
Resonator  
The RO3075A is a true one-port, surface-acoustic-wave (SAW) resonator in a surface-mount, ceramic case.  
It provides reliable, fundamental-mode, quartz frequency stabilization of fixed-frequency transmitters  
operating at 345 MHz. This SAW is designed specifically for remote control and wireless security transmitters.  
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  
345.07  
±70  
Units  
f
Center Frequency, +25 °C  
Absolute Frequency  
344.930  
MHz  
kHz  
dB  
C
f  
Tolerance from 345.0 MHz  
C
Insertion Loss  
Quality Factor  
IL  
1.3  
8000  
1000  
25  
1.7  
Q
Unloaded Q  
U
5,6,7  
Q
T
50 Loaded Q  
L
Temperature Stability  
Turnover Temperature  
Turnover Frequency  
10  
40  
°C  
O
f
f
6,7,8  
O
C
2
Frequency Temperature Coefficient  
Absolute Value during the First Year  
FTC  
0.032  
ppm/°C  
|f |  
Frequency Aging  
1
5
10  
ppm/yr  
MΩ  
A
DC Insulation Resistance between Any Two Terminals  
1.0  
R
RF Equivalent RLC Model  
Motional Resistance  
Motional Inductance  
Motional Capacitance  
Shunt Static Capacitance  
14.1  
57.7  
4.11  
4.2  
M
L
5, 7, 9  
µH  
M
C
fF  
M
C
5, 6, 9  
2, 7  
pF  
O
L
Test Fixture Shunt Inductance  
49.8  
nH  
TEST  
Lid Symbolization (in addition to Lot and/or Date Codes)  
664 // YWWS  
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.  
Notes:  
1.  
2.  
Frequency aging is the change in f with time and is specified at +65 °C or  
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
frequency, f . The nominal frequency at any case temperature, T , may be  
O
C
The center frequency, f , is measured at the minimum insertion loss point,  
C
2
calculated from: f = f [1 - FTC (T -T ) ]. Typically oscillator T is  
O
O
C
O
IL , with the resonator in the 50 test system (VSWR 1.2:1). The  
MIN  
approximately equal to the specified resonator T .  
O
shunt inductance, L  
, is tuned for parallel resonance with C at f .  
TEST  
O C  
9.  
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  
Typically, f  
or f  
is approximately equal to the  
TRANSMITTER  
OSCILLATOR  
O
resonator f .  
C
3.  
4.  
One or more of the following United States patents apply: 4,454,488 and  
4,616,197.  
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.  
Typically, equipment utilizing this device requires emissions testing and  
government approval, which is the responsibility of the equipment  
manufacturer.  
P
O
10. Tape and Reel standard per ANSI / EIA 481.  
5.  
6.  
Unless noted otherwise, case temperature T = +25 ± 2 °C.  
C
The design, manufacturing process, and specifications of this device are  
subject to change without notice.  
www.RFM.com E-mail: info@rfm.com  
© 2008-2011 by RF Monolithics, Inc.  
Page 1 of 2  
RO3075A - 6/29/11  

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