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

RO3073E-1
• Ideal for 315 MHz Automotive-Keyless-Entry Transmitters
• Very Low Series Resistance
• Quartz Stability
• Complies with Directive 2002/95/EC (RoHS) Pb
The RO3073E-1 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 applica-
tions operating in the USA under FCC Part 15, in Canada under DoC RSS-210, and in Italy.
315.0 MHz
SAW
Resonator
Absolute Maximum Ratings
Rating
Input Power Level
DC Voltage
Storage Temperature Range
Operating Temperature Range
Soldering Temperature (10 seconds / 5 cycles max.)
Electrical Characteristics
Characteristic
Frequency (+25 °C)
Absolute Frequency
Tolerance from 315.0 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
Shunt Static Capacitance
Test Fixture Shunt Inductance
Lid Symbolization
Standard Reel Quantity
Reel Size 7 Inch
Reel Size 13 Inch
Value
0
12
-40 to +125
-40 to +105
260
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
6, 7, 8
1, 6
5
5, 7, 9
5, 6, 9
2, 7
10
Units
dBm
VDC
°C
°C
°C
SM3030-6 Case
3.0 X 3.0
Minimum
314.950
Typical
Maximum
315.050
±50
1.6
2.4
8200
1350
10
25
35
f_C
0.032
10
1.0
19.8
82
3.1
4.1
63
802 // 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 less. 7. Derived mathematically from one or more of the following directly measured
Aging may exceed the specification for prolonged temperatures above +65°C.
parameters: f_C, IL, 3 dB bandwidth, f_C versus T_C, and C_O.
Typically, aging is greatest the first year after manufacture, decreasing in subse- 8. Turnover temperature, T_O, is the temperature of maximum (or turnover) fre-
quent years.
quency, f_O. The nominal frequency at any case temperature, T_C, may be calcu-
2.
3.
4.
5.
6.
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 induc-
tance, L_TEST, is tuned for parallel resonance with C_O at f_C. Typically, f_OSCILLA-
TOR ^{or f}TRANSMITTER ^{is approximately equal to the resonator f}C^.
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 govern-
ment approval, which is the responsibility of the equipment manufacturer.
Unless noted otherwise, case temperature T_C = +25°C±2°C.
The design, manufacturing process, and specifications of this device are subject
to change without notice.
lated 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 reso-
nant frequency and is provided for reference only. The capacitance C_O is the
static (nonmotional) capacitance between the two terminals measured at low fre-
quency (10 MHz) with a capacitance 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_P ≈ C_O - 0.05 pF.
10. Tape and Reel Standard Per ANSI / EIA 481.
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RO3073E-1 8/13/09