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RP1104
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Ideal for 639.9 or 640.0 MHz Oscillators
Nominal Insertion Phase Shift of 180° at Resonance
Quartz Stability
Rugged, Hermetic, Low-Profile TO39 Case
Pb
Complies with Directive 2002/95/EC (RoHS)
640.0 MHz
SAW Resonator
The RP1105 is a two-port, 180° surface-acoustic-wave (SAW) resonator in a low-profile TO39
case. It provides reliable, fundamental-mode, quartz frequency stabilization of fixed-frequency
oscillators operating at
or near 640 MHz. In the typical CATV converter second LO application, the nominal LO frequency
is 639.90 MHz. For these designs, the nominal resonator frequency is higher than the nominal
oscillator frequency to allow for production frequency tuning.
Absolute Maximum Ratings
Rating
Value
CW RF Power Dissipation (See: Typical Test Circuit)
DC Voltage Between Any Two Pins (Observe ESD Precautions)
Case Temperature
Absolute Frequency
Tolerance from 640.000 MHz
ΔfC
Unloaded Q
QU
50 Ω Loaded Q
QL
Turnover Temperature
TO
Turnover Frequency
fO
Insertion Loss
Quality Factor
Temperature Stability
Frequency Aging
Sym
fC
FTC
Absolute Value during First Year
|fA|
VDC
°C
°C
Notes
2, 3, 4, 5,
DC Insulation Resistance between Any Two Pins
RF Equivalent RLC
±30
260
IL
Frequency Temp. Coefficient
dBm
-40 to +85
Solder Temperature, 10 seconds/5 cycles maximum
Characteristic
Center Frequency
Units
+5
2, 5, 6
Motional Resistance
Motional Inductance
LM
Motional Capacitance
CM
Shunt Static Capacitance
CO
Typical
9.1
Maximum
640.100
Units
MHz
±100
kHz
12.5
dB
94
°C
8,600
5, 6, 7
5,600
64
6, 7, 8
79
fC+69
kHz
0.037
ppm/°C2
ppm/yr
≤ 10
6
5
RM
Minimum
639.900
TO39-3 Case
1.0
5, 7, 9
5, 6, 9
Lid Symbolization (in addition to Lot and/or Date Codes)
MΩ
185
Ω
395.520
µH
0.156356
fF
1.7
pF
RFM P1105
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
NOTES:
2.
3.
4.
5.
6.
7.
8.
9.
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 above +65°C.
Typically, aging is greatest the first year after manufacture, decreasing significantly in subsequent years.
The frequency fC is the frequency of minimum IL with the resonator in the specified test fixture in a 50 Ω test system with VSWR ≤ 1.2:1. Typically, fOSCILLATOR or
fTRANSMITTER is less than the resonator fC.
One or more of the following United States patents apply: 4,454,488; 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°C± 5°C
The design, manufacturing process, and specifications of this device are subject 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 20° less than 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 measured
static (nonmotional) capacitance between either pin 1 and ground or pin 2 and ground. The measurement includes case parasitic capacitance.
©2010-2015 by Murata Electronics N.A., Inc.
RP1104 (R) 2/11/15
Page 1 of 2
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Electrical Connections
Case Design
This two-port, three-terminal SAW resonator is bidirectional.
However, impedances and circuit board parasitics may not be
symmetrical, requiring slightly different oscillator componentmatching values.
Pin
Pin 1
Input or Output
Output or Input
Case Ground
G
H
F
E
A
D
(3 places)
Bottom View
Connection
1
2
3
C
B
J
(2 places)
Pin 2
45°
Equivalent LC Model
Pin 3
The following equivalent LC model is valid near resonance:
2
1
LM
R
Typical Test Circuit
Co
3
Electrical Test
2
1
Low-Loss
Matching
Network
to 50 Ω
From 50Ω
Network
Analyzer
1
2
To 50Ω
Network
Analyzer
3
Temperature Characteristics
3
fC = f O , T C = T O
The curve shown on the right
accounts for resonator contribution only and does not
include LC component temperature contributions.
-P
CW RF Power Dissipation = P
REFLECTED
INCIDENT
-50
-50
-100
-100
-150
-150
-200
-80 -60 -40 -20
Typical Application Circuits
-200
0 +20 +40 +60 +80
ΔT = T C - T O ( °C )
This SAW resonator can be used in oscillator or transmitter designs that
require 180° phase shift at resonance in a two-port configuration. Oneport resonators can be simulated, as shown, by connecting pins 1 and 2
together. However, for most low-cost consumer products, this is only
recommended for retrofit applications and not for new designs.
Conventional Two-Port Design:
0
0
(f-fo ) / fo (ppm)
P
INCIDENT
M
Co
Power Test
50 Ω
Source at P
REFLECTED
F
C
C
M
Simulated One-Port Design:
Typical Frequency Response
The plot shown below is a typical frequency response for the RP series of
two-port resonators. The plot is for RP1094.
-10.0
200.0
100.0
Phasing
& Match
0.0
-100.0
S21 magn.(dB)
Phasing
& Match
-20.0
2
3
-200.0
-30.0
-300.0
-400.0
-40.0
S21 phase (deg.)
1
-500.0
-600.0
-50.0
-700.0
-800.0
-60.0
90 1.2
90 5.2
9 0 9.2
9 1 3.2
91 7 .2
92 1 .2
92 5 .2
92 9 .2
Frequency (MHz)
Millimeters
Inches
Dimensions
Min
©2010-2015 by Murata Electronics N.A., Inc.
RP1104 (R) 2/11/15
Page 2 of 2
Max
Min
Max
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