RO2165A Datasheet, PDF (1/2 Pages) RF Monolithics, Inc – 858.25 MHz SAW Resonator

®
• 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)
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
RO2165A
RO2165A-1
RO2165A-2
858.25 MHz
SAW
Resonator
Absolute Maximum Ratings
Rating
CW RF Power Dissipation
DC Voltage Between Terminals
Case Temperature
Soldering Temperature (10 seconds / 5 cycles max.)
Value
+0
±30
-40 to +85
260
Units
dBm
VDC
°C
°C
SM-2 Case
Electrical Characteristics
Characteristic
Frequency (+25 °C) Nominal Frequency RO2165A
RO2165A-1
RO2165A-2
Tolerance from 858.25 MHz RO2165A
RO2165A-1
RO2165A-2
Insertion Loss
Quality Factor
Unloaded Q
50 Ω Loaded Q
Temperature Stability
Turnover Temperature
Turnover Frequency
Frequency Temperature Coefficient
Frequency Aging
Absolute Value during the First Year
DC Insulation Resistance between Any Two Terminals
RF Equivalent RLC Model Motional Resistance
Motional Inductance
Motional Capacitance
Shunt Static Capacitance
Test Fixture Shunt Inductance
Lid Symbolization (in Addition to Lot and/ or Date Code)
Sym
f_C
∆f_C
IL
Q_U
Q_L
T_O
f_O
FTC
|fA|
R_M
L_M
C_M
C_O
L_TEST
Notes
2, 3, 4, 5
2, 5, 6
5, 6, 7
6, 7, 8
1
5
5, 7, 9, 6
5, 6, 9
2, 7
Minimum
858.175
858.175
858.150
Typical
-75
±100
1.1
38,997
4,000
15
30
f_C
0.032
10
1.0
11
82.654
0.4161
2.6
2.9
11.8581
261
Maximum
858.325
858.475
858.350
±75
+225
2.0
Units
MHz
kHz
dB
45
°C
ppm/°C²
ppm/yr
MΩ
Ω
µH
fF
3.2
pF
nH
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
Notes:
1. Frequency aging is the change in f_C with time and is specified at +65°C or less. Aging may
7. Derived mathematically from one or more of the following directly measured parameters: f_C,
exceed the specification for prolonged temperatures above +65°C. Typically, aging is great-
IL, 3 dB bandwidth, f_C versus T_C, and C_O.
est the first year after manufacture, decreasing in subsequent years.
8. Turnover temperature, T_O, is the temperature of maximum (or turnover) frequency, f_O. The
2. The center frequency, f_C, is measured at the minimum insertion loss point, IL_MIN, with the res-
nominal frequency at any case temperature, T_C, may be calculated from: f = f_O [1 - FTC (T_O -
onator in the 50 Ω test system (VSWR ≤ 1.2:1). The shunt inductance, L_TEST, is tuned for par-
allel resonance with C_O at f_C. Typically, f_OSCILLATOR or f_TRANSMITTER is approximately equal _9.
T_C)²]. Typically oscillator T_O is approximately equal to the specified resonator T_O.
This equivalent RLC model approximates resonator performance near the resonant fre-
to the resonator f_C.
3. One or more of the following United States patents apply: 4,454,488 and 4,616,197.
quency and is provided for reference only. The capacitance C_O is the static (nonmotional)
capacitance between the two terminals measured at low frequency (10 MHz) with a capaci-
4. Typically, equipment utilizing this device requires emissions testing and government
tance meter. The measurement includes parasitic capacitance with "NC” pads unconnected.
approval, which is the responsibility of the equipment manufacturer.
Case parasitic capacitance is approximately 0.05 pF. Transducer parallel capacitance can by
5. Unless noted otherwise, case temperature T_C = +25°C±2°C.
6. The design, manufacturing process, and specifications of this device are subject to change
calculated as: C_P ≈ C_O - 0.05 pF.
without notice.
RF Monolithics, Inc. Phone: [phone]
Fax: [phone]
RFM Europe
Phone: [phone]
Fax: [phone]
©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.
E-mail: [e-mail]
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