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© 2008-2011 by RF Monolithics, Inc. RO3101E - 6/21/11
CAUTION: Elec trostatic Sensitive D evic e. Obs erve precautions for handling.
Notes:
Electrical Characteristics
Characteristic Sym Notes Minimum Typical Maximum Units
Center Frequency (+25 °C) Absolute Frequency fC2,3,4,5 433.845 433.995 MHz
Tolerance from 433.920 MHz ∆fC±75 kHz
Insertion Loss IL 2,5,6 1.4 2.2 dB
Quality Factor Unloaded Q QU5,6,7 8280
50 Ω Loaded Q QL1228
Temperature Stability Turnover Temperature TO6,7,8 10 25 35 °C
Turnover Frequency fOfC
Frequency Temperature Coefficient FTC 0.032 ppm/°C2
Frequency Aging Absolute Value during the First Year |fA|1≤10 ppm/yr
DC Insulation Resistance between Any Two Terminals 5 1.0 MΩ
RF Equivalent RLC Model Motional Resistance RM5, 7, 9 17.5 Ω
Motional Inductance LM53.5 µH
Motional Capacitance CM2.5 fF
Shunt Static Capacitance CO5, 6, 9 2.5 pF
Test Fixture Shunt Inductance LTEST 2, 7 53.2 nH
Lid Symbolization (in addition to Lot and/or Date Codes) 701 // YWWS
Standard Reel Quantity Reel Size 7 Inch 10 500 Pieces/Reel
Reel Size 13 Inch 3000 Pieces/Reel
• Designed for European 433.92 MHz SRD Transmitters
• Very Low Series Resistance
• Quartz Stability
• Complies with Directive 2002/95/EC (RoHS)
The RO3101E is a true one-port, surface-acoustic-wave (SA W) resonator in a surface-mount, ceramic case.
It provides reliable, fundamental-mode, quartz frequency stabiliz ation of fixed-frequency transmitters
operating at 433.92 MHz. This SAW is designed specifically for remote control and wireless security
transmitters operating in Europe under ETSI I-ETS 300 220 regulations.
Absolute Maximum Rating s
Rating Value Units
Input Power Level 0 dBm
DC voltage 12 VDC
Storage Temp erature Range -40 to +125 °C
Operating Temperature Range -40 to +105 °C
Soldering Temperature (10 seconds / 5 cycles maximum) 260 °C
433.92 MHz
SAW
Resonator
RO3101E
1. Frequency agin g is the chang e in fC with time an d is specif ied at +6 5 °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.
2. The center frequency, fC, is measured at the minimum insertion loss point,
ILMIN, with the res onator in the 50 Ω test system (VSWR ≤ 1.2:1). The
shunt inductance, LTEST, is tuned for parallel resonance with CO at fC.
Typica lly, fOSCILLATOR or fTRANSMITTER is approximately equal to the
resonator fC.
3. One or more of the following United State s patents apply: 4,454,488 and
4,616,197.
4. Typically, equip ment utilizing this devic e requires emissions testin g and
government app roval, which is the responsib ility of the equip ment
manufacturer.
5. Unless noted otherwise, case temperature TC= +25 °C±2 °C.
6. The design, manufac turing process, and specifications of this device are
subject to change without noti ce.
7. Derived mat hematically from one or more of the following directly
measured parameters: fC, IL, 3 dB bandwidth, fC versus TC, and CO.
8. Turnover temperature, TO, is the tempera ture of maximum (or turnover)
frequenc y, fO. T he nominal f requency at any case tempera ture, TC, may be
calculated from: f = fO[1 - FTC (TO-TC)2]. Typically oscillator TO is
approximately equal to the specified resonator TO.
9. This equivalent RLC model approximates resonator performance near the
resonan t frequen cy and is provided for refer ence o nly. The capac itanc e CO
is the static (nonmotional) capacitance bet ween the two terminals
measured at low frequency (10 MHz) with a capacitance meter. The
measureme nt includes p arasitic cap acitanc e with "NC” pads unconne cted.
Case pa r as itic capacitance is approximately 0.05 pF. Transducer parallel
capacitance can by calculated as: CP≈CO-0.05pF.
10. Tape and Reel Standard Per ANSI / EIA 481.
SM3030-6 Case
3.0 X 3.0
Pb
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© 2008-2011 by RF Monolithics, Inc. RO3101E - 6/21/11
-80 -60 -40 -20 0 +20 +40 +60
0
-50
-
100
-
150
+80
-
200
0
-50
-100
-150
-200
f
C
= f
O
, T
C
= T
O
∆
T = T
C
- T
O
( °C )
(f-foo
)/f(ppm)
0.05 pF*
0.05 pF
Cp
Co+
=
*Case Parasitics
Cp
Rm
Lm Cm
Equivalent LC Model
Temperature Characteristics
The curve shown on the right accounts for resonator contribution only and
does not include LC component temperature contributions.
Pin Connection
1NC
2 Terminal
3NC
4NC
5 Terminal
6NC
Power Test
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 Test Circuit
The test circuit inductor, LTEST, is tuned to resonate with the static
capacitance, CO, a t FC.
Electrical Test
Typical Application Circuits
From 50 Ω
Network Analyzer To 50 Ω
Network Analyzer
2
3
6
5
4
1
Low-Loss
Matching
Network to
50 Ω
50 Ω Source
at FC
PINCIDENT
PREFLECTED
2 3
6 5 4
1
Modulation
Input
ROXXXXC
Bottom View
200k Ω
C1
L1
(Antenna)
47
+9VDC
C2
RF Bypass
470
Typical Low-Power Transmitter A pplicati on
2 3
6 5 4
1
+VDC
ROXXXXC
Bottom View
200k Ω
C1
L1
+VDC
C2
RF Bypass
Ty pical Local Oscillator Application Output
2 3
6 5 4
1
1
2
3
6
5
4
1
2
3
6
5
4
A
BC
DJ
EF
GH
I
Case Dimensions
Dimension mm Inches
Min Nom Max Min Nom Max
A2.87 3.00 3.13 0.113 0.118 0.123
B2.87 3.00 3.13 0.113 0.118 0.123
C1.12 1.25 1.38 0.044 0.049 0.054
D0.77 0.90 1.03 0.030 0.035 0.040
E2.67 2.80 2.93 0.105 0.110 0.115
F1.47 1.60 1.73 0.058 0.063 0.068
G0.72 0.85 0.98 0.028 0.033 0.038
H1.37 1.50 1.63 0.054 0.059 0.064
I0.47 0.60 0.73 0.019 0.024 0.029
J1.17 1.30 1.43 0.046 0.051 0.056
