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RF Monolithics, Inc.
RFM Europe
1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.
Phone: (972) 233-2903
Phone: 44 1963 251383
Fax: (972) 387-9148
Fax: 44 1963 251510
E-mail: info@rfm.com
http://www.rfm.com
RP1094-110499
Page 1 of 2
Electrical Characteristics
Characteristic
Absolute Frequency
Tolerance from 915.000 MHz
Sym
f
C
f
C
IL
Q
U
Q
L
T
O
f
O
FTC
|f
A
|
Notes
Minimum
914.850
Typical
Maximum
915.150
±150
15.0
Units
MHz
kHz
dB
Center Frequency
2, 3, 4, 5,
Insertion Loss
Quality Factor
2, 5, 6
8.5
6,100
3,700
68
f
C
+63
0.037
≤
10
Unloaded Q
50
Loaded Q
Turnover Temperature
Turnover Frequency
Frequency Temp. Coefficient
Absolute Value during First Year
5, 6, 7
Temperature Stability
6, 7, 8
53
83
°C
kHz
ppm/°C
2
ppm/yr
M
μH
fF
pF
Frequency Aging
DC Insulation Resistance between Any Two Pins
RF Equivalent RLC
6
5
1.0
Motional Resistance
Motional Inductance
Motional Capacitance
Shunt Static Capacitance
R
M
L
M
C
M
C
O
5, 7, 9
166
463
191.3434
0.158119
1.4
5, 6, 9
1.1
1.7
Lid Symbolization (in addition to Lot and/or Date Codes)
RFM P1094
TO39-3 Case
Designed for 915 MHz FCC Part 15 Transmitters
Nominal Insertion Phase Shift of 180° at Resonance
Quartz Stability
Rugged, Hermetic, Low-Profile TO39 Case
Complies with Directive 2002/95/EC (RoHS)
The RP1094 is a two-port, 180° surface-acoustic-wave (SAW) resonator in a low-profile TO39 case. It pro-
vides reliable, fundamental-mode, quartz frequency stabilization of fixed-frequency oscillators operating at or
near 915 MHz. This resonator is designed specifically for use in low-power transmitters operating in the USA
under FCC Part 15.249 regulations. It is also suitable for a variety of other oscillator applications.
Absolute Maximum Ratings
Rating
Value
+5
±30
-40 to +85
Units
dBm
VDC
°C
CW RF Power Dissipation (See: Typical Test Circuit)
DC Voltage Between Any Two Pins (Observe ESD Precautions)
Case Temperature
915.0 MHz
SAW
Resonator
RP1094
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. Aging may exceed the specification for prolonged temperatures
above +65°C. Typically, aging is greatest the first year after manufacture, decreasing significantly in subsequent years.
The frequency f
C
is the frequency of minimum IL with the resonator in the specified test fixture in a 50
test system with VSWR
≤
1.2:1. Typically,
f
OSCILLATOR
or f
TRANSMITTER
is less than the resonator f
C
.
One or more of the following United States patents apply: 4,454,488; 4,616,197.
Typically, equipment utilizing this device requires emissions testing and government approval, which is the responsibility of the equipment manufac-
turer.
Unless noted otherwise, case temperature T
C
= +25°C± 5°C
The design, manufacturing process, and specifications of this device are subject 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) 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 20° less than 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 measured static (nonmotional) capacitance between either pin 1 and ground or pin 2 and ground. The measurement includes case parasitic
capacitance.
2.
3.
4.
5.
6.
7.
8.
9.
Pb