®
RO2073A-5
315.05 MHz
SAW
Resonator
•
•
•
•
•
Ideal for European 315.05 MHz Transmitters
Surface-Mount Ceramic Case with 21 mm
2
Footprint
Very Low Series Resistance
Quartz Stability
Pb
Complies with Directive 2002/95/EC (RoHS)
The RO2073A-5 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 fixed-frequency transmitters
operating at 315.05 MHz. This SAW is designed specifically for remote-control and wireless security trans-
mitters 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
Case Temperature
Soldering Temperature (10 seconds / 5 cycles max.)
Value
+0
±30
-40 to +85
+260
Units
dBm
VDC
°C
°C
SM-2 Case
Electrical Characteristics
Characteristic
Center Frequency at +25 °C
Absolute Frequency
Tolerance from 315.05 MHz
Insertion Loss
Quality Factor
Temperature Stability
Unloaded Q
50
Ω
Loaded Q
Turnover Temperature
Turnover Frequency
Frequency Temperature Coefficient
Frequency Aging
RF Equivalent RLC Model
Absolute Value during the First Year
Motional Resistance
Motional Inductance
Motional Capacitance
Shunt Static Capacitance
Test Fixture Shunt Inductance
Lid Symbolization (in addition to Lot and/or Date Codes)
DC Insulation Resistance between Any Two Terminals
R
M
L
M
C
M
C
O
L
TEST
5, 6, 7,9
2, 7
151
2.0
2.3
110
5, 6, 7, 9
Sym
f
C
∆f
C
IL
Q
U
Q
L
T
O
f
O
FTC
|fA|
1
5
1.0
16
29
127.430
2.00267
2.6
6,7,8
Notes
2,3,4,5
2,5,6
5,6,7
10
Minimum
314.975
Typical
Maximum
315.125
±75
1.3
15,300
2,100
25
f
C
0.032
≤10
ppm/°C
2
ppm/yr
MΩ
Ω
µH
fF
pF
nH
40
°C
2.2
Units
MHz
kHz
dB
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
Notes:
1.
2.
Lifetime (10 year) frequency aging.
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
.
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 gov-
ernment approval, which is the responsibility of the equipment manufacturer.
Unless noted otherwise, case temperature T
C
= +25°C±2°C for all specifica-
tions.
The design, manufacturing process, and specifications of this device are sub-
ject to change without notice.
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
.
Turnover temperature, T
O
, is the temperature of maximum (or turnover) fre-
quency, f
O
. The nominal frequency at any case temperature, TC, may be cal-
9.
culated from: f = f
O
[1 - FTC (T
O
-T
C
)
2
].
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 measured at
low frequency (10 MHz) with a capacitance meter. The measurement
includes parasitic capacitance with “NC” pads unconnected. Case parasitic
capacitance is approximately 0.05pF. Transducer parallel capacitance can be
calculated as: C
P
≈
C
O
- 0.05 pF.
3.
4.
5.
6.
7.
8.
RF Monolithics, Inc.
Phone: (972) 233-2903
Fax: (972) 387-8148
RFM Europe
Phone: 44 1963 251383
Fax: 44 1963 251510
©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.
E-mail: info@rfm.com
http://www.rfm.com
RO2073A-5-120805
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RFM [ RF MONOLITHICS, INC ]
