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参数资料
| 型号： | RO3118E |
| 厂商： | RF MONOLITHICS INC |
| 元件分类： | SAW谐振器 |
| 英文描述： | 1-PORT SAW RESONATOR, 318 MHz |
| 封装： | ROHS COMPLIANT, CERAMIC, CASE SM3030-6 |
| 文件页数： | 1/2页 |
| 文件大小： | 94K |
| 代理商： | RO3118E |
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Page 1 of 2
2008 by RF Monolithics, Inc.
RO3118E - 3/27/08
Electrical Characteristics
Characteristic
Sym
Notes
Minimum
Typical
Maximum
Units
Frequency (+25 °C)
Absolute Frequency
fC
2, 3, 4, 5
317.925
318.075
MHz
Tolerance from 315.0 MHz
ΔfC
±75
kHz
Insertion Loss
IL
2, 5, 6
1.6
2.2
dB
Quality Factor
Unloaded Q
QU
9000
50W Loaded Q
QL
1500
Temperature Stability
Turnover Temperature
TO
6, 7, 8
10
25
40
°C
Turnover Frequency
fO
fC
Frequency Temperature Coefficient
FTC
0.032
ppm/°C2
Frequency Aging
Absolute Value during the First Year
|fA|
1, 6
10
ppm/yr
DC Insulation Resistance between Any Two Terminals
5
1.0
M
Ω
RF Equivalent RLC Model
Motional Resistance
RM
5, 7, 9
21
Ω
Motional Inductance
LM
93
H
Motional Capacitance
CM
2.7
fF
Shunt Static Capacitance
CO
5, 6, 9
2.8
pF
Test Fixture Shunt Inductance
LTEST
2, 7
82
nH
Lid Symbolization
687 // YWWS
StandardReelQuantity
Reel Size 7 Inch
10
500 Pieces / Reel
Reel Size 13 Inch
3000 Pieces / Reel
Ideal for 318 MHz Automotive-Keyless-Entry Transmitters
Very Low Series Resistance
Quartz Stability
Complies with Directive 2002/95/EC (RoHS)
The RO3118E 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 318 MHz.
Absolute Maximum Ratings
Rating
Value
Units
Input Power Level
0
dBm
DC Voltage
12
VDC
Storage Temperature Range
-40 to +125
°C
Operating Temperature Range
-40 to +105
°C
Soldering Temperature (10 seconds / 5 cycles max.)
260
°C
318.0 MHz
SAW
Resonator
RO3118E
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
Notes:
1.
Frequency aging is the change in fC 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 center frequency, fC, is measured at the minimum insertion loss point,
ILMIN, with the resonator in the 50 Ω test system (VSWR ≤ 1.2:1). The
shunt inductance, LTEST, is tuned for parallel resonance with CO at fC.
Typically, fOSCILLATOR or fTRANSMITTER is approximately equal to the
resonator fC.
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 equipment
manufacturer.
5.
Unless noted otherwise, case temperature TC = +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: fC, IL, 3 dB bandwidth, fC versus TC, and CO.
8.
Turnover temperature, TO, is the temperature of maximum (or turnover)
frequency, fO. The nominal frequency at any case temperature, TC, may be
calculated from: f = fO [1 - FTC (TO -TC)
2]. Typically oscillator T
O is
approximately equal to the specified resonator TO.
9.
This equivalent RLC model approximates resonator performance near the
resonant frequency and is provided for reference only. The capacitance CO
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 0.05 pF. Transducer parallel
capacitance can by calculated as: CP ≈ CO -0.05pF.
10.
Tape and Reel Standard Per ANSI / EIA 481.
SM3030-6 Case
3.0 X 3.0
Pb
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| RO3132A | 功能描述:谐振器 312.0 MHz +/-100kHz Single Port RoHS:否 制造商:Murata 频率:30 MHz 容差:25 PPM 系列:XRCGB 端接类型:SMD/SMT 工作温度范围:- 10 C to + 70 C 尺寸:1.6 mm W x 2 mm L x 0.65 mm H 封装:Reel |
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