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參數(shù)資料
| 型號： | RP1285 |
| 英文描述： | Analog IC |
| 中文描述： | 模擬IC |
| 文件頁數(shù)： | 1/2頁 |
| 文件大?。?/td> | 118K |
| 代理商： | RP1285 |
RP1285
916.55 MHz SAW Resonator
RF Monolithics, Inc.
Phone: (972) 233-2903
Fax: (972) 387-9148
E-mail: info@rfm.com
http://www.rfm.com
RP1285-120298
Page 1 of 2
1998 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.
Ideal for 916.5 MHz FCC Part 15.249 Transmitters
Nominal Insertion Phase Shift of 180
°
at Resonance
Quartz Stability
Rugged, Hermetic, Low-Profile TO39 Case
The RP1285 is a two-port, 180
°
surface-acoustic-wave (SAW) resonator in a low-pro-
file TO39 case. It provides reliable, fundamental-mode, quartz frequency stabilization
of fixed-frequency transmitters operating at 916.5 MHz. The RP1285 is designed spe-
cifically for remote-control and data-link transmitters operating in the USA under FCC
Part 15.249 regulations and in Canada under DoC RSS-210.
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 in subsequent years.
2. 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
.
3. One or more of the following United States patents apply: 4,454,488; 4,616,197.
4. Typically, equipment utilizing this device requires emissions testing and government approval, which is the responsibility of the equipment manufac-
turer.
5. Unless noted otherwise, case temperature T
C
= +25°C± 2°C
6. The design, manufacturing process, and specifications of this 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
.
8. 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
.
9. 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 para-
sitic capacitance.
Electrical Characteristics
Characteristic
Sym
Notes
Minimum
Typical
Maximum
Units
Center Frequency (+25°C)
Absolute Frequency
Tolerance from 916.550 MHz
f
C
f
C
IL
Q
U
Q
L
T
O
f
O
FTC
|f
A
|
2, 3, 4, 5,
916.400
916.700
±150
10.0
MHz
kHz
dB
Insertion Loss
Quality Factor
2, 5, 6
7.5
6,500
3,800
Unloaded Q
50
Loaded Q
Turnover Temperature
Turnover Frequency
Frequency Temp. Coefficient
5, 6, 7
Temperature Stability
6, 7, 8
23
38
53
°C
kHz
f
C
+5.7
0.037
≤
10
ppm/°C
2
ppm/yr
M
μH
fF
pF
Frequency Aging
DC Insulation Resistance between Any Two Pins
RF Equivalent RLC Model
Absolute Value during First Year
6
5
1.0
Motional Resistance
Motional Inductance
Motional Capacitance
Shunt Static Capacitance
R
M
L
M
C
M
C
O
5, 7, 9
137
217
155.005
0.194528
5, 6, 9
1.7
2.0
2.3
Lid Symbolization (in addition to Lot and/or Date Codes)
RFM P1285
TO39-3 Case
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