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RO3156E/E-1/E-2
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Designed for European 868.95 MHz SRD Transmitters
Very Low Series Resistance
Quartz Stability
Pb
Complies with Directive 2002/95/EC (RoHS)
868.950 MHz
SAW Resonator
The RO3156E 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 868.95 MHz.This SAW is designed specifically for SRD remote control and wireless security
transmitters operating under ETSI EN 300 220.
Absolute Maximum Ratings
Rating
Value
Units
Input Power Level
0
dBm
DC Voltage
12
VDC
Storage Temperature
-40 to +125
°C
Operating Temperature Range
-40 to +125
°C
+260
°C
Soldering Temperature, 10 seconds / 5 cycles maximum
SM3030-6 3 x 3 mm Case
Electrical Characteristics
Characteristic
Frequency, +25 °C
Sym
fC
RO3156E-1
RO3156E-2
Tolerance from 868.95 MHz
Notes
RO3156E
2,3,4,5
RO3156E
Minimum
Typical
Maximum
868.750
869.150
868.800
869.100
868.850
869.050
±150
RO3156E-2
Temperature Stability
Frequency Aging
Unloaded Q
IL
2,5,6
1.2
QU
5,6,7
6700
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
kHz
±100
Insertion Loss
Quality Factor
MHz
±200
ΔfC
RO3156E-1
Units
2.0
dB
800
10
6,7,8
1
5
25
40
°C
fC
kHz
0.032
ppm/°C2
ppm/yr
<±10
1.0
MΩ
14.1
Ω
17.2
µH
Motional Resistance
RM
Motional Inductance
LM
Motional Capacitance
CM
2.0
fF
Shunt Static Capacitance
CO
5, 6, 9
2.3
pF
LTEST
2, 7
14.6
nH
Test Fixture Shunt Inductance
Lid Symbolization (in addition to Lot and/or Date Codes)
Standard Reel Quantity
RO3156E: 707, RO3156E-1: 708, RO3156E-2: 926 // YWWS
Reel Size 7 Inch
10
Reel Size 13 Inch
©2010-2015 by Murata Electronics N.A., Inc.
RO3156E/E-1/E-2 (R) 2/5/15
5, 6, 7, 9
Page 1 of 3
500 Pieces / Reel
3000 Pieces / Reel
www.murata.com
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
NOTES:
1.
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 subject
to change without notice.
7.
8.
9.
10.
Temperature Characteristics
Electrical Connections
The curve shown accounts for resonator
B
Pin
Connection
1
NC
2
Terminal
3
NC
4
NC
5
Terminal
G
C
6
A 2
5
E
F
fC = f O , T C = T O
0
0
-50
-50
-100
-100
-150
-150
(f-fo ) / fo (ppm)
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
1
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 for ANSI / EIA 481.
-200
-80 -60 -40 -20
H
6
1
5
2
-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.
3
4
3
4
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.
RO3156E/E-1/E-2 (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
Typical Low-Power Transmitter Application
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
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
+9VDC
C1
47
L1
(Antenna)
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
6
2
3
5
4
C2
Equivalent RLC Model
ROXXXXC
Bottom View
RF Bypass
0.05 pF*
Cp
Rm
Lm
Co = Cp + 0.05 pF
*Case Parasitics
Cm
©2010-2015 by Murata Electronics N.A., Inc.
RO3156E/E-1/E-2 (R) 2/5/15
Page 3 of 3
www.murata.com
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