RO2165A
RO2165A-1
RO2165A-2
®
•
•
•
Ideal for European 858.25 MHz Transmitters
Very Low Series Resistance
Quartz Stability
Surface-Mount Ceramic Case with 21 mm2 Footprint
Complies with Directive 2002/95/EC (RoHS)
858.25 MHz
SAW
Resonator
•
•
The RO2165A 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 local oscillators operating at 858.25
MHz. This SAW is designed for remote-control and wireless security receivers operating under ETSI-ETS
300 220 in Europe and under FTZ 17 TR 2100 in Germany
Absolute Maximum Ratings
Rating
Value
+0
Units
dBm
VDC
°C
CW RF Power Dissipation
DC Voltage Between Terminals
Case Temperature
±30
-40 to +85
260
SM-2 Case
Soldering Temperature (10 seconds / 5 cycles max.)
°C
Electrical Characteristics
Characteristic
Frequency (+25 °C) Nominal Frequency RO2165A
RO2165A-1
Sym
Notes
Minimum
858.175
858.175
858.150
Typical
Maximum
858.325
858.475
858.350
±75
Units
f
MHz
C
RO2165A-2
2, 3, 4, 5
Tolerance from 858.25 MHz
RO2165A
RO2165A-1
RO2165A-2
Df
-75
+225
kHz
dB
C
±100
1.1
Insertion Loss
IL
2, 5, 6
5, 6, 7
2.0
45
Q
Quality Factor
Unloaded Q
38,997
4,000
30
U
Q
T
50 W Loaded Q
L
Temperature Stability
Turnover Temperature
15
1.0
2.6
°C
O
f
f
Turnover Frequency
6, 7, 8
O
C
2
Frequency Temperature Coefficient
Absolute Value during the First Year
FTC
|fA|
0.032
10
ppm/°C
Frequency Aging
1
5
ppm/yr
MW
W
DC Insulation Resistance between Any Two Terminals
R
RF Equivalent RLC Model
Motional Resistance
Motional Inductance
Motional Capacitance
Shunt Static Capacitance
11
M
L
5, 7, 9, 6
82.654
0.4161
2.9
µH
M
C
fF
M
C
5, 6, 9
2, 7
3.2
pF
O
L
Test Fixture Shunt Inductance
11.8581
nH
TEST
Lid Symbolization (in Addition to Lot and/ or Date Code)
261
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
Notes:
1.
2.
Frequency aging is the change in f with time and is specified at +65°C or less. Aging may
C
exceed the specification for prolonged temperatures above +65°C. Typically, aging is great-
est the first year after manufacture, decreasing in subsequent years.
7.
Derived mathematically from one or more of the following directly measured parameters: f ,
C
IL, 3 dB bandwidth, f versus T , and C .
C C O
8.
Turnover temperature, T , is the temperature of maximum (or turnover) frequency, f . The
O
O
The center frequency, f , is measured at the minimum insertion loss point, IL , with the res-
C
MIN
nominal frequency at any case temperature, T , may be calculated from: f = f [1 - FTC (T -
C
O
O
onator in the 50 W test system (VSWR £ 1.2:1). The shunt inductance, L
, is tuned for par-
TEST
2
T ) ]. Typically oscillator T is approximately equal to the specified resonator T .
O
C
O
allel resonance with C at f . Typically, f
or f
is approximately equal
TRANSMITTER
O
C
OSCILLATOR
9.
This equivalent RLC model approximates resonator performance near the resonant fre-
quency and is provided for reference only. The capacitance C is the static (nonmotional)
to the resonator f .
C
O
3.
4.
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.
capacitance between the two terminals measured at low frequency (10 MHz) with a capaci-
tance 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: C » C - 0.05 pF.
5.
6.
Unless noted otherwise, case temperature T = +25°C±2°C.
C
P
O
The design, manufacturing process, and specifications of this device are subject to change
without notice.
RF Monolithics, Inc.
RFM Europe
Phone: (972) 233-2903
Phone: 44 1963 251383
Fax: (972) 387-8148
Fax: 44 1963 251510
E-mail: info@rfm.com
http://www.rfm.com
Page 1 of 2
©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.
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