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RO3164A/A-1/A-2
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Designed for European 868.35 MHz SRD Transmitters
Very Low Series Resistance
Quartz Stability
Surface-mount Ceramic Case
Complies with Directive 2002/95/EC (RoHS) Pb
868.35 MHz
SAW Resonator
The RO3164A is a one-port surface-acoustic-wave (SAW) resonator packaged in a surface-mount ceramic
case. It provides reliable, fundamental-mode quartz frequency stabilization of fixed-frequency transmitters
operating at 868.35 MHz. The RO3164A is designed specifically for remote control and wireless security SRD
transmitters operating under ETSI EN 300 220-2.
Absolute Maximum Ratings
Rating
Value
Units
CW RF Power Dissipation
+5
dBm
DC Voltage Between Terminals
±30
VDC
-40 to +85
°C
260
°C
Case Temperature
Soldering Temperature, 10 seconds / 5 cycles maximum
SM5035-4
Electrical Characteristics
Characteristic
Frequency, +25 °C
Sym
fC
RO3164A-1
RO3164A-2
Tolerance from 868.35 MHz
Notes
RO3164A
2,3,4,5
RO3164A
Minimum
Typical
868.550
868.200
868.500
868.250
868.450
Unloaded Q
IL
2,5,6
1.3
QU
5,6,7
6600
50 Ω Loaded Q
QL
Turnover Temperature
TO
fO
Turnover Frequency
Frequency Aging
Frequency Temperature Coefficient
FTC
Absolute Value during the First Year
|fA|
DC Insulation Resistance between Any Two Terminals
RF Equivalent RLC Model
RM
Motional Inductance
LM
Motional Capacitance
CM
Shunt Static Capacitance
CO
LTEST
Lid Symbolization (in addition to Lot and/or Date Codes)
2.0
dB
40
°C
800
10
6,7,8
1
5
Motional Resistance
Test Fixture Shunt Inductance
kHz
±100
Insertion Loss
Temperature Stability
MHz
±150
RO3164A-2
Quality Factor
Units
±200
ΔfC
RO3164A-1
Maximum
868.150
25
fC
kHz
0.032
ppm/°C2
ppm/yr
<±10
1.0
5, 6, 7, 9
MΩ
13.8
Ω
16.8
µH
2.0
fF
5, 6, 9
1.8
pF
2, 7
18.3
nH
RO3164A: 660, RO3164A-1: 780, RO3164A-2: 868 // YYWWS
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
©2010-2015 by Murata Electronics N.A., Inc.
RO3164A/A-1/A-2 (R) 2/10/15
Page 1 of 3
www.murata.com
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
7.
8.
9.
to change without notice.
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.
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.
Typical Local Oscillator Applications
Case Ground
Case Ground
Terminal
Output
+VDC
C1
+VDC
Terminal
L1
C2
Typical Test Circuit
The test circuit inductor, LTEST, is tuned to resonate with the static
capacitance, CO, at FC.
RO3XXXA
Bottom View
RF Bypass
Typical Application Circuits
ELECTRICAL TEST
Typical Low-Power Transmitter Application
To 50 Ω
Network Analyzer
From 50 Ω
Network Analyzer
+9VDC
Modulation
Input
200k Ω
47
C1
L1
(Antenna)
C2
POWER TEST
P
INCIDENT
50 Ω Source
P
at F C
REFLECTED
RF Bypass
RO3XXXA
Bottom View
Low-Loss
Matching
Network to
50 Ω
470
Terminal
NC
NC
Terminal
Equivalent RLC Model
C
CW RF Power Dissipation =
P
L
M
C
P
C
C
P INCIDENT - P REFLECTED
C
C
S
R
M
S
O
= 0 .0 5 p F (C a s e P a r a s itic s )
= S A W S ta tic C a p a c ita n c e
= C S + C P
M
Temperature Characteristics
fC = f O , T C = T O
0
0
-50
-50
-100
-100
-150
-150
(f-fo ) / fo (ppm)
The curve shown on the right
accounts for resonator
contribution only and does not
include LC component
temperature contributions.
-200
-80 -60 -40 -20
-200
0 +20 +40 +60 +80
ΔT = TC - T O ( °C )
©2010-2015 by Murata Electronics N.A., Inc.
RO3164A/A-1/A-2 (R) 2/10/15
Page 2 of 3
www.murata.com
Case
T o p V ie w
S id e V ie w
B
C
B o tto m
V ie w
E (3 x )
Dimensions
A
4
F (4 x )
A
1
3
2
G
(1 x )
D
H
I
I
Millimeters
Inches
Min
Nom
Max
Min
Nom
Max
4.87
5.00
5.13
0.191
0.196
0.201
B
3.37
3.50
3.63
0.132
0.137
0.142
C
1.45
1.53
1.60
0.057
0.060
0.062
D
1.35
1.43
1.50
0.040
0.057
0.059
E
0.67
0.80
0.93
0.026
0.031
0.036
F
0.37
0.50
0.63
0.014
0.019
0.024
G
1.07
1.20
1.33
0.042
0.047
0.052
H
-
1.04
-
-
0.041
-
I
-
1.46
-
-
0.058
-
J
-
3.01
-
-
0.119
-
K
-
1.44
-
-
0.057
-
L
-
1.92
-
-
0.076
-
I
H
H
J
H
K
L
PCB Land Pattern
Top View
©2010-2015 by Murata Electronics N.A., Inc.
RO3164A/A-1/A-2 (R) 2/10/15
Page 3 of 3
www.murata.com
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