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Electrical Characteristics
Characteristic Sym Notes Minimum Typical Maximum Units
Frequency (+25 °C) Nominal Frequency RO3164D fC
2,3,4,5
868.150 868.550 MHzRO3164D-1 868.200 868.500
RO3164D-2 868.250 868.450
Tolerance from 868.35 MHz RO3164D
ΔfC
±200 kHzRO3164D-1 ±150
RO3164D-2 ±100
Insertion Loss IL 2,5,6 1.3 2.0 dB
Quality Factor Unloaded Q QU5,6,7 7100
50 Ω Loaded Q QL970
Temperature S tability Turnover Temperature TO6,7,8 10 25 40 °C
Turnover Frequency fOfCkHz
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, 6, 7, 9 15.8 Ω
Motional Inductance LM20.5 µH
Motional Capacitance CM1.6 fF
Shunt Static Capacitance CO5, 6, 9 1.7 pF
Test Fixture Shunt Inductance LTEST 2, 7 19.4 nH
Lid Symbolization (in addition to Lot and/or Date Codes) RO3164D 685, RO3164D-1 771, RO3164D-2 772 / YWWS
Standard Reel Quantity Reel Size 7 Inch 500 Pieces / Reel
Reel Size 13 Inch 30 0 0 Pie ces / Re e l
• Ideal for European 868.35 MHz Transmitters
• Very Low Series Resistance
• Quartz Stability
• Complies with Directive 2002/95/EC (RoHS)
The RO3164D 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 868.35 MHz. This SAW is designed specifically for remote-control and wireless security
transmitters operating under ETSI-ETS 300 220 in Europe and under FTZ 17 TR 2100 in Germany.
Absolute Maximum Ratings
Rating Value Units
Input Power Level 0 dBm
DC Voltage 12 VDC
Storage Temperature -40 to +85 °C
Soldering Temperature (10 seconds / 5 cycles max.) 260 °C
868.35 MHz
SAW
Resonator
RO3164D
RO3164D-1
RO3164D-2
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
Notes:
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 in subsequent years.
2. The center frequency, fC, is mea sured at the minimum insertion loss point,
ILMIN, with the res onator in t he 50 Ω test system (VSWR ≤ 1.2:1). The
shunt inductance, LTEST, is tuned for parallel resonanc e with CO at fC.
Typically, fOSCILLATOR or fTRANSMITTER is approximately equal to the
resonator fC.
3. One or more of the foll owing United States pat ents 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 the equipment
manufacturer.
5. Unless noted otherwise, case temperature TC= +25°C±2°C.
6. The design, manufact uring process, and specifications of this device are
subject to change without notice.
7. Derived mat hematicall y fr om one or more of the follo wing 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 frequ ency at any case temperatu re, TC, ma y be
calculated from: f = fO[1 - FTC (TO-TC)2]. Typically oscillator TO is
approximately equal to the spec ified resonator TO.
9. This equiv alent RLC model approximates resonator performance near t he
resonan t frequen cy and is provided for refer ence o nly. The capac it ance CO
is the static (nonmotional) capacitance between 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 capa citance is approximately 0.05 pF. Tr ansducer parallel
capacitance can by calculated as: CP≈CO-0.05pF.
SM3838-6 Case
3.8 X 3.8
Pb
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©2008 by RF Monolithics, Inc. RO3164D - 3/27/08
-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
Δ
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 Tes t Circuit
The test circuit inductor, LTEST, is tuned to resonate with the static
capacitance, CO, at FC.
Electri cal Tes t
Typical Application Circuits
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 T ransmitter Application
2 3
6 5 4
1
+VDC
ROXXXXC
Bottom View
200k Ω
C1
L1
+VDC
C2
RF Bypass
Typica l Local Oscillato r Application Output
2 3
6 5 4
1
Case Dimensions
Dimension mm Inches
Min Nom Max Min Nom Max
A3.60 3.80 4.0 0.14 0.15 0.16
B3.60 3.80 4.0 0.14 0.15 0.16
C1.00 1.20 1.40 0.04 0.05 0.055
D0.95 1.10 1.25 0.033 0.043 0.05
E2.39 2.54 2.69 0.090 0.10 0.110
G0.90 1.0 1.10 0.035 0.04 0.043
H1.90 2.0 2.10 0.75 0.08 0.83
I0.50 0.6 0.70 0.020 0.024 0.028
J1.70 1.8 1.90 0.067 0.07 0.075
1
2
3
6
5
4
1
2
3
6
5
4
A
BC
DJ
E
GH
I