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©2009 by RF Monolithics, Inc. RO3101E-11 - 3/24/09
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
Notes:
Electrical Characteristics
Characteristic Sym Notes Minimum Typical Maximum Units
Center Frequency (+25 °C) Absolute Frequency fC2,3,4,5 433.845 434.995 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) 894 // YWWS
Standard Reel Quantity Reel Size 13 Inch 10 4000 Pieces/Reel
• Ideal for European 433.92 MHz Transmitters
• Very Low Series Resistance
• Quartz Stability
• Complies with Directive 2002/95/EC (RoHS)
The RO3101E-11 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 433.92 MHz. This SAW is designed specifically for remote-control and wireless security
transmitters operating in Europe under ETSI I-ETS 300 220-1.
Absolute Maximum Ratings
Rating Value Units
Input Power Level 0 dBm
DC voltage 12 VDC
Storage Temperature Range -40 to +125 °C
Operating Temperature Range -40 to +105 °C
Soldering Temperature (10 seconds / 5 cycles max.) 260 °C
433.92 MHz
SAW
Resonator
RO3101E-11
1. Frequency aging is the chan ge 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.
2. The center frequ ency, fC, is mea sured at th e minimum insertion loss poi nt,
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.
Typically, fOSCILLATOR or fTRANSMITTER is approximately equal to the
resonator fC.
3. One or more of the following United States patents apply: 4,454,488 and
4,616,197.
4. Typically, equipment utilizing this device requires emis sions testing and
government app roval, which is the responsibility of th e equipment
manufacturer.
5. Unless noted otherwise, case t emperature TC= +25°C±2°C.
6. The design, manufacturing process, an d 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 temperature of maximum (or turnover)
frequenc y, fO. The n ominal f requency at any ca se tempera ture, T C, may be
calculated fr om: f = fO[1 - FTC (TO-TC)2]. Typical ly oscillator TO is
approximately equal to the specified resonator TO.
9. This equiv alent RLC model approximates resonator performan ce near the
resonan t frequen cy and is provided for refer ence o nly. The ca pacit ance CO
is the static (nonmo tional) capacita nce between the tw o terminals
measured at low frequency (10 MHz) with a capac i tance meter. The
measureme nt includes p arasitic cap acitanc e with "NC” pads unconne cted.
Case pa r as itic capacitance is app roximately 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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©2009 by RF Monolithics, Inc. RO3101E-11 - 3/24/09
-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 Transm itt er Application
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 3.0 3.13 0.113 0.118 0.123
B2.87 3.0 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 1.6 1.73 0.058 0.063 0.068
G0.72 0.85 0.98 0.028 0.033 0.038
H1.37 1.5 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
