RO3112A Datasheet, PDF (1/2 Pages) Murata Manufacturing Co., Ltd. – 433.42 MHz SAW Resonator

• Ideal for European 433.92 MHz Superhet Receiver LOs
• Very Low Series Resistance
• Quartz Stability
• Surface-mount Ceramic Case with 21 mm² Footprint
• Complies with Directive 2002/95/EC (RoHS)
The RO3112A 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
approximately 433.42 MHz. This SAW is designed for 433.92 MHz superhet receivers with 500 kHz IF (Philips
UAA3201T). Applications include remote-control and wireless security receivers operating in Europe under
ETSI I-ETS 300 220.
Absolute Maximum Ratings
Rating
Value
Units
CW RF Power Dissipation (See Typical Test Circuit)
+0
dBm
DC Voltage Between Terminals (Observe ESD Precautions)
±30
VDC
Case Temperature
-40 to +85
°C
Soldering Temperature (10 seconds / 5 cycles maximum)
260
°C
RO3112A
433.42 MHz
SAW
Resonator
SM5035-4
Electrical Characteristics
Characteristic
Center Frequency, +25 °C Absolute Frequency
Tolerance from 433.42 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 Terminals
RF Equivalent RLC Model Motional Resistance
Motional Inductance
Motional Capacitance
Transducer Static Capacitance
Test Fixture Shunt Inductance
Lid Symbolization
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
L_TEST
Notes
2, 3, 4, 5
2, 5, 6
5, 6, 7
6, 7, 8
1
5
5, 7, 9
5, 6, 9
2, 7
Minimum
433.345
Typical
1.4
8000
1300
10
25
f_C
0.032
≤10
1.0
18.6
54.8
2.5
3.7
36.8
658 // YYWWS
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
Notes:
Maximum
433.495
±75
1.6
Units
MHz
kHz
dB
40
°C
ppm/°C²
ppm/yr
MΩ
25
Ω
µH
fF
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.
decreasing 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 approximately equal to the
resonator f_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
approximately equal to 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 the two terminals
3. One or more of the following United States patents apply: 4,454,488 and
measured at low frequency (10 MHz) with a capacitance meter. The
4,616,197.
measurement includes parasitic capacitance with “NC” pads unconnected.
4. Typically, equipment utilizing this device requires emissions testing and
Case parasitic capacitance is approximately 0.05 pF. Transducer parallel
government approval, which is the responsibility of the equipment
manufacturer.
5. Unless noted otherwise, case temperature T_C = +25 ± 2 °C.
capacitance can be calculated as: C_P ≈ C_O - 0.05 pF.
10. Packaged in 500PC Tape carrier.
6. The design, manufacturing process, and specifications of this device are
subject to change without notice.
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RO3112A - 6/27/11