RO3073E Datasheet, PDF (1/2 Pages) Murata Manufacturing Co., Ltd. – 315.00 MHz SAW Resonator

RO3073E
• Ideal for 315 MHz Automotive-Keyless-Entry Transmitters
• Very Low Series Resistance
• Quartz Stability
• Complies with Directive 2002/95/EC (RoHS)
Pb
315.0 MHz
SAW
The RO3073E 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 315 MHz. This SAW was designed for AM transmitters in automotive-keyless-entry
applications operating in the USA under FCC Part 15, in Canada under DoC RSS-210, and in Italy.
Absolute Maximum Ratings
Rating
Value
Units
Input Power Level
0
dBm
DC Voltage
12
VDC
Storage Temperature Range
-40 to +125
°C
Operating Temperature Range
-40 to +105
°C
Soldering Temperature (10 seconds / 5 cycles max.)
260
°C
Resonator
SM3030-6 Case
3.0 X 3.0
Electrical Characteristics
Characteristic
Frequency (+25 °C)
Absolute Frequency
Tolerance from 315.0 MHz
Insertion Loss
Quality Factor
Unloaded Q
50W 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
Standard Reel Quantity
Reel Size 7 Inch
Reel Size 13 Inch
Sym
f_C
Δf_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
6, 7, 8
1, 6
5
5, 7, 9
5, 6, 9
2, 7
10
Minimum
314.925
Typical
Maximum
315.075
±75
1.6
2.4
8200
1350
10
25
35
f_C
0.032
10
1.0
19.8
82
3.1
4.1
63
704 // YWWS
500 Pieces / Reel
3000 Pieces / Reel
Units
MHz
kHz
dB
°C
ppm/°C²
ppm/yr
MΩ
Ω
µH
fF
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
subject to change without notice.
less. Aging may exceed the specification for prolonged temperatures
7. Derived mathematically from one or more of the following directly
above +65°C. Typically, aging is greatest the first year after manufacture,
measured parameters: f_C, IL, 3 dB bandwidth, f_C versus T_C, and C_O.
decreasing in subsequent years.
8. Turnover temperature, T_O, is the temperature of maximum (or turnover)
2. The center frequency, f_C, is measured at the minimum insertion loss point,
frequency, f_O. The nominal frequency at any case temperature, T_C, may be
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
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.
9. This equivalent RLC model approximates resonator performance near the
resonator f_C.
3. One or more of the following United States patents apply: 4,454,488 and
resonant frequency and is provided for reference only. The capacitance C_O
is the static (nonmotional) capacitance between the two terminals
4,616,197.
4. Typically, equipment utilizing this device requires emissions testing and
measured at low frequency (10 MHz) with a capacitance meter. The
measurement includes parasitic capacitance with "NC” pads unconnected.
government approval, which is the responsibility of the equipment
manufacturer.
5. Unless noted otherwise, case temperature T_C = +25°C±2°C.
6. The design, manufacturing process, and specifications of this device are
Case parasitic capacitance is approximately 0.05 pF. Transducer parallel
capacitance can by calculated as: C_P ≈ C_O - 0.05 pF.
10. Tape and Reel Standard Per ANSI / EIA 481.
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RO3073E - 3/26/08