RO3115 Datasheet, PDF (1/2 Pages) Murata Manufacturing Co., Ltd. – 417.5 MHz SAW Resonator

RO3115
• Ideal for LO in 418 MHz Superheterodyne Receivers with 500 kHz IF
• Very Low Series Resistance
• Quartz Stability
• Rugged, Hermetic, Low-Profile TO39 Case
• Complies with Directive 2002/95/EC (RoHS)
Pb
The RO3115 is a true one-port, surface-acoustic-wave (SAW) resonator in a low-profile TO39 case. It provides
reliable, fundamental-mode, quartz frequency stabilization of oscillators operating at approximately
417.5 MHz. The RO3115 is designed for IC-based 418 MHz superhet receivers with 500 kHz IF (Philips
UAA3201T). Applications include remote-control and wireless security receivers operating in the United
Kingdom underDTI MPT 1340 and in the USA under FCC Part 15.
Absolute Maximum Ratings
Rating
CW RF Power Dissipation (See: Typical Test Circuit)
Value
+0
Units
dBm
DC Voltage Between Any Two Pins (Observe ESD Precautions)
±30
VDC
Case Temperature
-40 to +85
°C
417.5 MHz
SAW
Resonator
TO39-3 Case
Electrical Characteristics
Characteristic
Center Frequency (+25 °C)
Absolute Frequency
Tolerance from 417.500 MHz
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 Pins
RF Equivalent RLC Model Motional Resistance
Motional Inductance
Motional Capacitance
Pin 1 to Pin 2 Static Capacitance
Transducer Static Capacitance
Test Fixture Shunt Inductance
Lid Symbolization (in Addition to Lot and/or Date Codes)
Sym
f_C
∆f_C
IL
Q_U
Q_L
T_O
f_O
FTC
|f_A|
R_M
L_M
C_M
C_O
C_P
L_TEST
Notes
2, 3, 4, 5
2, 5, 6
5, 6, 7
6, 7, 8
1
5
5, 7, 9
5, 6, 9
5, 6, 7, 9
2, 7
Minimum
417.425
Typical
1.1
12000
1200
10
20
f_c -0.4
0.037
≤10
1.0
10.6
49.3
2.9
2.2
2.0
65
RFM RO3115
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
Notes:
Maximum
417.575
±75
1.5
Units
MHz
kHz
dB
40
°C
kHz
ppm/°C²
ppm/yr
MΩ
Ω
µH
fF
pF
pF
nH
1. Frequency aging is the change in f_C with time and is specified at +65°C or 7. Derived mathematically from one or more of the following directly
less. Aging may exceed the specification for prolonged temperatures
measured parameters: f_C, IL, 3 dB bandwidth, f_C versus T_C, and C_O.
above +65°C. Typically, aging is greatest the first year after manufacture, 8. Turnover temperature, T_O, is the temperature of maximum (or turnover)
2.
3.
4.
5.
decreasing significantly in subsequent years.
The center frequency, f_C, is measured at the minimum insertion loss point,
IL_MIN, with the resonator in the 50 Ω test system (VSWR ≤ 1.2:1). The
shunt inductance, L_TEST, is tuned for parallel resonance with C_O at f_C.
Typically, f_OSCILLATOR or f_TRANSMITTER is less than the resonator f_C.
One or more of the following United States patents apply: 4,454,488 and
4,616,197 and others pending.
Typically, equipment designs utilizing this device require emissions testing
and government approval, which is the responsibility of the equipment
manufacturer.
Unless noted otherwise, case temperature T_C = +25°C±2°C.
9.
frequency, f_O. The nominal frequency at any case temperature, T_C, may be
calculated from: f = f_O [1 - FTC (T_O -T_C)²]. Typically, oscillator T_O is 20°C
less than the specified resonator T_O.
This equivalent RLC model approximates resonator performance near the
resonant frequency and is provided for reference only. The capacitance C_O
is the static (nonmotional) capacitance between pin1 and pin 2 measured
at low frequency (10 MHz) with a capacitance meter. The measurement
includes case parasitic capacitance with a floating case. For usual
grounded case applications (with ground connected to either pin 1 or pin 2
and to the case), add approximately 0.25 pF to C_O.
6. The design, manufacturing process, and specifications of this device are
subject to change without notice.
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©2008 by RF Monolithics, Inc.
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RO3115 - 1/6/09