RO3144E/E-1/E-2
•
•
•
•
Ideal for 916.5 MHz Remote Control and Data Telemetry Transmitters
Very Low Series Resistance
Quartz Stability
Pb
Complies with Directive 2002/95/EC (RoHS)
The RO3144E is a true one-port, surface-acoustic-wave (SAW) resonator in a surface-mount ceramic case.
It provides reliable, fundamental-mode stabilization of fixed-frequency transmitters operating at 916.5 MHz.
This SAW is designed specifically for remote control and data telemetry transmitters operating in the USA
under FCC Part 15 regulations and in Canada under DoC RSS-210.
916.5 MHz
SAW
Resonator
Absolute Maximum Ratings
Rating
Input Power Level
DC Voltage
Storage Temperature
Operating Temperature Range
Soldering Temperature
Value
0
12
-40 to +125
-40 to +125
260
Units
dBm
VDC
°C
°C
°C
SM3030-6 Case
3.0 X 3.0
Electrical Characteristics
Characteristic
Frequency, +25 °C
RO3144E
RO3144E-1
RO3144E-2
Tolerance from 916.5 MHz
RO3144E
RO3144E-1
RO3144E-2
Insertion Loss
Quality Factor
Temperature Stability
Unloaded Q
50
Loaded
Q
Turnover Temperature
Turnover Frequency
Frequency Temperature Coefficient
Frequency Aging
RF Equivalent RLC Model
Absolute Value during the First Year
Motional Resistance
Motional Inductance
Motional Capacitance
Transducer Static Capacitance
Test Fixture Shunt Inductance
Lid Symbolization
Standard Reel Quantity
Reel Size 7 Inch
Reel Size 13 Inch
DC Insulation Resistance between Any Two Terminals
R
M
L
M
C
M
C
O
L
TEST
IL
Q
U
Q
L
T
O
f
O
FTC
|fA|
f
C
f
C
Sym
Notes
Minimum
916.300
916.350
916.400
Typical
Maximum
916.700
916.650
916.600
±200
±150
±100
Units
MHz
2, 3, 4, 5
kHz
dB
2, 5, 6
5, 6, 7
15
6, 7, 8
1
5
5, 6, 7, 9
5, 6, 9
2, 7
1.0
1.2
6400
780
25
fc
0.032
10
14
15.4
1.9
1.9
16
500 Pieces / Reel
3000 Pieces / Reel
1.6
40
°C
MHz
ppm/°C
2
ppm
M
µH
fF
pF
nH
RO3144E 693, RO3144E-1 769, RO3144E-2 770 / YWWS
10
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
NOTES:
1.
2.
Frequency aging is the change in f
C
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, f
C
, is measured at the minimum insertion loss point, IL
MIN
, with
the resonator in the 50
test system (VSWR
1.2:1). The shunt inductance, L
TEST
, is
tuned for parallel resonance with C
O
at f
C
. Typically, f
OSCILLATOR
or f
TRANSMITTER
is
approximately equal to the resonator f
C
.
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 T
C
= +25 ± 2 °C.
The design, manufacturing process, and specifications of this device are subject to
change without notice.
7.
8.
Derived mathematically from one or more of the following directly measured
parameters: f
C
, IL, 3 dB bandwidth, f
C
versus T
C
, and C
O
.
Turnover temperature, T
O
, is the temperature of maximum (or turnover) frequency, f
O
.
The nominal frequency at any case temperature, T
C
, may be calculated from:
f = f
O
[1 - FTC (T
O
-T
C
)
2
]. Typically
oscillator
T
O
is approximately equal to the
specified
resonator
T
O
.
This equivalent RLC model approximates resonator performance near the resonant
frequency and is provided for reference only. The capacitance C
O
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
P
C
O
- 0.05 pF.
Tape and Reel Standard for ANSI / EIA 481.
3.
4.
5.
6.
9.
10.
©2010-2015
© Murata
Electronics N.A., Inc.
Ltd. All Rights Reserved 2007
Copyright
by Murata
Manufacturing Co.,
RO3144E/E-1/E-2 (R) 7/31/15
Page 1 of 2
www.murata.com
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.
B
1
6
C
6
Temperature Characteristics
Pin
1
2
3
4
5
6
NC
Terminal
NC
NC
Terminal
NC
G
H
1
Connection
The curve shown accounts for resonator contribution only and does not
include external LC component temperature effects.
f
C
= f
O
, T
C
= T
O
0
(f-fo ) / fo (ppm)
0
-50
-100
-150
-200
0 +20 +40 +60 +80
-50
-100
-150
-200
-80 -60 -40 -20
T = T
C
- T
O
( °C )
I
A 2
5
E
F
5
2
Characterization Test Circuit
Inductor L
TEST
is tuned to resonate with the static capacitance, C
O
, at F
C
.
3
4
D
4
J
3
6
1
From 50
Network Analyzer
5
2
To 50
Network Analyzer
4
3
K
L
N
K
N
O
N
M
M
Power Dissipation Test
P
INCIDENT
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
Max
0.123
0.123
0.054
0.040
0.115
0.068
0.038
0.064
0.029
0.056
50
Source
at F
C
P
REFLECTED
Low-Loss
Matching
Network to
50
1
6
2
5
3
4
Example Application Circuits
Typical Low-Power Transmitter Application
200k
C1
L1
(Antenna)
Modulation
Input
+9VDC
47
1
6
ROXXXXC
Bottom View
2
5
3
4
C2
RF Bypass
470
Typical Local Oscillator Application
200k
+VDC
C1
L1
Output
+VDC
Equivalent RLC Model
0.05 pF*
Co = Cp + 0.05 pF
*Case Parasitics
ROXXXXC
Bottom View
1
6
2
5
3
4
C2
RF Bypass
Cp
Rm
Lm
Cm
©2010-2015 by Murata
Manufacturing Co.,
Copyright © Murata
Electronics N.A., Inc.
Ltd. All Rights Reserved 2007
RO3144E/E-1/E-2 (R) 7/31/15
Page 2 of 2
www.murata.com
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