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RO3150E
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Designed for Low Power 304 MHz Transmitters
Very Low Series Resistance
Quartz Frequency Stability
Miniature 3.0 x 3.0 mm Surface-mount Case
Complies with Directive 2002/95/EC (RoHS) Pb
304 MHz
SAW Resonator
The RO3104E 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 304 MHz. This SAW is designed specifically for transmitters used in wireless security and remote control
applications.
Absolute Maximum Ratings
Rating
Value
Units
CW RF Power Dissipation (See Typical Test Circuit)
0
dBm
DC Voltage Between Terminals (Observe ESD Precautions)
5
VDC
-40 to +85
°C
+260
°C
Case Temperature
Maximum Soldering Profile Temperature (10 s, 5 cycles maximum)
SM3030-6 Case
Electrical Characteristics
Characteristic
Frequency, +25 °C
Sym
fC
Nominal Frequency
ΔfC
Tolerance from 304.000 MHz
Insertion Loss
Quality Factor
Temperature Stability
Frequency Aging
IL
Unloaded Q
QU
50 Ω Loaded Q
QL
Turnover Temperature
TO
Turnover Frequency
fO
Frequency Temperature Coefficient
FTC
Absolute Value during the First Year
|fA|
DC Insulation Resistance between Any Two Terminals
RF Equivalent RLC Model
2, 3, 4, 5
RM
Motional Inductance
LM
Motional Capacitance
CM
Transducer Static Capacitance
Typical
Maximum
Units
303.925
304.000
304.075
MHz
±75
kHz
2.0
dB
40
°C
1.35
14,590
5, 6, 7
2,100
10
25
fC
6, 7, 8
ppm/°C2
ppm/yr
0.032
1, 6
10
1.0
MΩ
5, 6, 7,
9,
16
Ω
125
µH
2.1
fF
CO
5, 6, 9
3.8
pF
LTEST
2, 7
TBD
nH
Lid Symbolization
Standard Reel Quantity
Minimum
2, 5, 6
5
Motional Resistance
Test Fixture Shunt Inductance
Notes
977 // YWWS
Reel Size 7 Inch
10
Reel Size 13 Inch
©2010-2015 by Murata Electronics N.A., Inc.
RO3150E (R) 2/5/15
Page 1 of 3
500 Pieces/Reel
3000 Pieces/Reel
www.murata.com
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
NOTES:
2.
3.
4.
5.
6.
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
above +65 °C. Typically, aging is greatest the first year after manufacture,
decreasing in subsequent years.
The center frequency, fC, is measured at the minimum insertion loss point,
ILMIN, with the resonator in the 50 Ω test system (VSWR ≤ 1.2:1). The
shunt inductance, LTEST, is tuned for parallel resonance with CO at fC.
Typically, fOSCILLATOR or fTRANSMITTER is approximately equal to the
resonator fC.
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.
Unless noted otherwise, case temperature TC = +25 ±2 °C.
The design, manufacturing process, and specifications of this device are
Electrical Connections
Pin
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.
B
6
A 2
5
1
NC
2
Terminal
3
NC
4
NC
5
Terminal
6
NC
3
4
F
9.
10.
subject to change.
Derived mathematically from one or more of the following directly
measured parameters: fC, IL, 3 dB bandwidth, fC versus TC, and CO.
Turnover temperature, TO, is the temperature of maximum (or turnover)
frequency, fO. The nominal frequency at any case temperature, TC, may be
calculated from: f = fO [1 - FTC (TO -TC)2]. Typically oscillator TO is
approximately equal to the specified resonator TO.
This equivalent RLC model approximates resonator performance near the
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.
Tape and Reel Standard Per ANSI / EIA 481.
Temperature Characteristics
The curve shown accounts for resonator contribution only and does not
include external LC component temperature effects.
fC = f O , T C = T O
0
0
G
E
8.
Connection
C
1
7.
-50
-50
-100
-100
-150
-150
(f-fo ) / fo (ppm)
1.
-200
-80 -60 -40 -20
H
6
1
5
2
4
3
-200
0 +20 +40 +60 +80
ΔT = TC - T O ( °C )
I
Characterization Test Circuit
Inductor LTEST is tuned to resonate with the static capacitance, CO, at FC.
D
J
6
1
From 50 Ω
Network Analyzer
5
2
4
3
To 50 Ω
Network Analyzer
K
L
N
K
N
Power Dissipation Test
O
N
M
M
50 Ω Source
at F C
P INCIDENT
P REFLECTED
©2010-2015 by Murata Electronics N.A., Inc.
RO3150E (R) 2/5/15
Page 2 of 3
Low-Loss
Matching
Network to
50 Ω
1
6
2
3
5
4
www.murata.com
Example Application Circuits
Case and Typical PCB Land Dimensions
Ref
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
Min
2.87
2.87
1.12
0.77
2.67
1.47
0.72
1.37
0.47
1.17
mm
Nom
3.00
3.00
1.25
0.90
2.80
1.60
0.85
1.50
0.60
1.30
3.20
1.70
1.05
0.81
0.38
Max
3.13
3.13
1.38
1.03
2.93
1.73
0.98
1.63
0.73
1.43
Min
0.113
0.113
0.044
0.030
0.105
0.058
0.028
0.054
0.019
0.046
Inches
Nom
0.118
0.118
0.049
0.035
0.110
0.063
0.033
0.059
0.024
0.051
0.126
0.067
0.041
0.032
0.015
Typical Low-Power Transmitter Application
Max
0.123
0.123
0.054
0.040
0.115
0.068
0.038
0.064
0.029
0.056
Modulation
Input
200k Ω
1
6
2
3
5
4
C2
ROXXXXC
Bottom View
RF Bypass
470
Typical Local Oscillator Application
Output
200k Ω
+VDC
C1
+VDC
L1
1
Equivalent RLC Model
2
3
5
4
C2
ROXXXXC
Bottom View
0.05 pF*
Cp
Lm
47
L1
(Antenna)
6
Rm
+9VDC
C1
RF Bypass
Co = Cp + 0.05 pF
*Case Parasitics
Cm
©2010-2015 by Murata Electronics N.A., Inc.
RO3150E (R) 2/5/15
Page 3 of 3
www.murata.com
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