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Murata Manufacturing Electronic Components Datasheet

RO3104C Datasheet

303.825MHz SAW Resonator

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RFM products are now
Murata products.
RO3104C
• Ideal for 303.825 MHz Remote Control and Security Transmitters
• Very Low Series Resistance
• Quartz Stability
Pb
• Complies with Directive 2002/95/EC (RoHS)
The RO3104C 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 low power transmitters operating at
303.825 MHz. This SAW resonator is designed for transmitters used in remote control and wireless security
applications operating in the USA under FCC Part 15 and in Canada under DoC RSS-210.
303.825 MHz
SAW
Resonator
Absolute Maximum Ratings
Rating
Value
Units
Input Power Level
0 dBm
DC Voltage
12 VDC
Storage Temperature
Soldering Temperature (10 seconds / 5 cycles maximum)
-40 to +85
260
°C
°C
SM5050-8 Case
5X5
Electrical Characteristics
Characteristic
Sym Notes Minimum Typical Maximum Units
Frequency, +25 °C
Insertion Loss
Absolute Frequency
Tolerance from 303.825 MHz
fC
fC
2, 3, 4, 5
303.750
303.900
±75
MHz
kHz
IL 2, 5, 6
1.3 2.0 dB
Quality Factor
Unloaded Q
50 Loaded Q
Temperature Stability
Turnover Temperature
Turnover Frequency
Frequency Temperature Coefficient
Frequency Aging
Absolute Value during the First Year
DC Insulation Resistance between Any Two Terminals
RF Equivalent RLC Model Motional Resistance
Motional Inductance
Motional Capacitance
Shunt Static Capacitance
Test Fixture Shunt Inductance
Lid Symbolization
QU
QL
TO
fO
FTC
|fA|
RM
LM
CM
CO
LTEST
6, 7, 8
1, 6
5
5, 7, 9
5, 6, 9
2, 7
9800
1300
10 25
fC
0.032
10
1.0
15.6
79.7
3.4
3.3
83.9
688 // YWWS
40
°C
ppm/°C2
ppm/yr
M
µH
fF
pF
nH
Standard Reel Quantity
Reel Size 7 Inch
500 Pieces / Reel
Reel Size 13 Inch
3000 Pieces / Reel
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
NOTES:
1.
Frequency aging is the change in fC with time and is specified at +65 °C or
less. Aging may exceed the specification for prolonged temperatures
6.
The design, manufacturing process, and specifications of this device are
subject to change without notice.
above +65 °C. Typically, aging is greatest the first year after manufacture, 7. Derived mathematically from one or more of the following directly
decreasing in subsequent years.
measured parameters: fC, IL, 3 dB bandwidth, fC versus TC, and CO.
2. The center frequency, fC, is measured at the minimum insertion loss point, 8. Turnover temperature, TO, is the temperature of maximum (or turnover)
ILMIN, with the resonator in the 50 test system (VSWR 1.2:1). The
frequency, fO. The nominal frequency at any case temperature, TC, may be
shunt inductance, LTEST, is tuned for parallel resonance with CO at fC.
Typically, fOSCILLATOR or fTRANSMITTER is approximately equal to the
resonator fC.
calculated from: f = fO [1 - FTC (TO -TC)2]. Typically oscillator TO is
approximately equal to the specified resonator TO.
9. This equivalent RLC model approximates resonator performance near the
3. One or more of the following United States patents apply: 4,454,488 and
4,616,197.
4. Typically, equipment utilizing this device requires emissions testing and
government approval, which is the responsibility of the equipment
manufacturer.
5. Unless noted otherwise, case temperature TC = +25 ± 2 °C.
resonant frequency and is provided for reference only. The capacitance CO
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: CP CO - 0.05 pF.
©C2o0p1y0r-i2g0h1t4©byMMuurraattaaEMleactnrounfiaccstNu.rAin.,gInCc.o., Ltd. All Rights Reserved 2007
RO3104C (R) 4/8/14
Page 1 of 2
www.murata.com


Murata Manufacturing Electronic Components Datasheet

RO3104C Datasheet

303.825MHz SAW Resonator

No Preview Available !

Electrical Connections
The SAW resonator is bidirectional and
may be installed 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 recommended to help reduce
parasitic capacitance in the circuit.
Pin Connection
1 NC
2 Terminal
3 NC
4 NC
5 NC
6 Terminal
7 NC
8 NC
Parameter Test Circuit
From 50
Network Analyzer
71
6 82
4
53
To 50
Network Analyzer
Power Test Circuit
B CE
88
NC NC
1
A2
7 D7
66
1
2G
50 Source
at F C
P INCIDENT
P REFLECTED
Low-Loss
Matching
Network to
50
NC
12 3
84
765
NC
3 55 3
NC NC
4 4 Example Application Circuits
F Typical Low-Power Transmitter Application
J
H
L
M
P
Modulation
Input
200k
ROXXXXC
Bottom View
12 3
84
765
+9VDC
C1
L1
(Antenna)
47
C2
RF Bypass
470
I
K
Q
N
O
+VDC
Typical Local Oscillator Application
200k
C1
Output
+VDC
L1
12 3
84
Dimension
Min
mm
Nom
Max
Min
A 4.80 5.00 5.20 0.189
Inches
Nom
0.197
Max
0.205
ROXXXXC
Bottom View
765
C2
RF Bypass
B
4.80 5.00 5.20 0.189 0.197
0.205
C
1.30 1.50 1.70 0.050 0.060
0.067
Equivalent RLC Model
D
1.98 2.08 2.18 0.078 0.082
0.086
E
1.07 1.17 1.27 0.042 0.046
0.050
0.05 pF*
F
0.50 0.64 0.70 0.020 0.025
0.028
G
2.39 2.54 2.69 0.094 0.100
0.106
Co= Cp + 0.05 pF
Cp
*Case Parasitics
H 1.27
I 0.76
J 1.55
K 2.79
L 0.76
M 2.36
N 1.55
O 2.79
P 2.79
Q 2.79
0.050
0.030
0.061
0.110
0.030
0.093
0.061
0.110
0.110
0.110
Rm Lm Cm
Temperature Characteristics
The curve shown on the right accounts for resonator contribution only and
does not include LC component temperature contributions.
fC = fO , TC = T O
00
-50 -50
-100
-150
-100
-150
-200
-200
-80 -60 -40 -20 0 +20 +40 +60 +80
C©o20p1y0r-i2g0h1t4©byMMuurraattaaEMleacntrounfaiccstNu.rAin.,gInCc.o., Ltd. All Rights Reserved 2007
RO3104C (R) 4/8/14
Page 2 of 2
T = TC - TO ( °C )
www.murata.com


Part Number RO3104C
Description 303.825MHz SAW Resonator
Maker muRata
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