RO2113A Datasheet, PDF (1/2 Pages) RF Monolithics, Inc – 314.5 MHz SAW Resonator

®
• Ideal for 315 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 RO2113A 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 oscillatiors operating at
314.5 MHz. This SAW is designed for 315 MHz superhet receivers with500 kHz IF (Philips UAA320IT).
Applications include automotive-keyless-entry receivers operating in the USA under FCC Part 15, in Canada
under DoC RSS-210, and in Italy.
Absolute Maximum Ratings
Rating
CW RF Power Dissipation (See: Typical Test Circuit.)
DC Voltage Between Terminals (Observe ESD Precautions)
Case Temperature
Soldering Temperature (10 seconds / 5 cycles max.)
Value
+0
±30
-40 to +85
260
Units
dBm
VDC
°C
°C
RO2113A
314.5 MHz
SAW
Resonator
SM-2 Case
Electrical Characteristics
Characteristic
Center Frequency at +25 °C Absolute Frequency
Tolerance from 314.500 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 Terminals
RF Equivalent RLC Model Motional Resistance
Motional Inductance
Motional Capacitance
Shunt Static Capacitance
Test Fixture Shunt Inductance
Lid Symbolization
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, 6, 9
5, 6, 9
2, 7
Minimum
314.425
Typical
0.8
18,200
1,500
10
25
f_C
0.032
≤10
1.0
10
80.9315
3.17441
2.7
3.0
90
103
Maximum
314.575
±75
1.5
Units
MHz
kHz
dB
40
°C
ppm/°C²
ppm/yr
MΩ
19
Ω
µH
fF
3.3
pF
nH
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
Notes:
1. Lifetime (10 year) frequency aging.
8. Turnover temperature, T_O, is the temperature of maximum (or turn-
2. The center frequency, f_C, is measured at the minimum insertion
over) frequency, f_O. The nominal frequency at any case tempera-
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 reso-
9.
ture, T_C, may be calculated from: f = f_O [1 - FTC (T_O -T_C)²].
This equivalent RLC model approximates resonator performance
nance with C_O at f_C.
near the resonant frequency and is provided for reference only. The
3. One or more of the following United States patents apply:
4,454,488 and 4,616,197.
4. Typically, equipment utilizing this device requires emissions testing
and government approval, which is the responsibility of the equip-
ment manufacturer.
5. Unless noted otherwise, case temperature T_C = +25°C±2°C.
6. The design, manufacturing process, and specifications of this
capacitance C_O is the static (nonmotional) capacitance between
the two terminals measured at low frequency (10 MHz) with a
capacitance meter. The measurement includes parasitic capaci-
tance 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.
device are subject to change without notice.
7. Derived mathematically from one or more of the following directly
measured parameters: f_C, IL, 3 dB bandwidth, f_C versus T_C,
and C_O.
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RO2113A-041603
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