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参数资料
| 型号： | RO3118 |
| 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, HERMETIC, CASE TO39-3 |
| 文件页数： | 1/2页 |
| 文件大小： | 136K |
| 代理商： | RO3118 |
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E-mail: info@rfm.com
Page 1 of 2
2008 by RF Monolithics, Inc.
RO3118 - 3/27/08
Electrical Characteristics
Characteristic
Sym
Notes
Minimum
Typical
Maximum
Units
Frequency (+25 °C)
Nominal Frequency
fC
2, 3, 4, 5
317.925
318.075
MHz
Tolerance from 318.000 MHz
ΔfC
±75
kHz
Insertion Loss
IL
2, 5, 6
1.5
2.0
dB
Quality Factor
Unloaded Q
QU
5, 6, 7
10700
50
Ω Loaded Q
QL
1400
Temperature Stability
Turnover Temperature
TO
6, 7, 8
10
25
40
°C
Turnover Frequency
fO
fC+4.2
kHz
Frequency Temperature Coefficient
FTC
0.037
ppm/°C2
Frequency Aging
Absolute Value during the First Year
|fA|
1, 6
10
ppm/yr
DC Insulation Resistance between Any Two Pins
5
1.0
M
Ω
RF Equivalent RLC Model
Motional Resistance
RM
5, 6, 7, 9
15
Ω
Motional Inductance
LM
80
H
Motional Capacitance
CM
3.1
fF
Pin 1 to Pin 2 Static Capacitance
CO
5, 6, 9
2.6
pF
Transducer Static Capacitance
CP
5, 6, 7, 9
3.0
pF
Test Fixture Shunt Inductance
LTEST
2, 7
96
nH
Lid Symbolization (in addition to Lot and/or Date Codes)
RFM // RO3118
TO39-3 Case
Designed for 318 MHz Transmitter Applications
Low Series Resistance
Quartz Stability
Rugged, Hermetic, Low-Profile TO39 Case
Complies with Directive 2002/95/EC (RoHS)
The RO3118 is a true one-port, surface-acoustic-wave (SAW) resonator in a low-profile TO39 case. It provides
reliable, fundamental-mode quartz frequency stabilization of fixed-frequency transmitters operating at or near
318 MHz.
Absolute Maximum Ratings
Rating
Value
Units
CW RF Power Dissipation
+0
dBm
DC Voltage Between Terminals (Observe ESD Precautions)
±30
VDC
Case Temperature
-40 to +85
°C
Soldering Temperature (10 seconds / 5 cycles max.
260
°C
318.00 MHz
SAW
Resonator
RO3118
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 significantly 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 less than the resonator fC.
3.
One or more of the following United States patents apply: 4,454,488 and
4,616,197 and others pending.
4.
Typically, equipment designs utilizing this device require 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 20°C
less than 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 pin1 and pin 2 measured
at low frequency (10 MHz) with a capacitance meter. The measurement
includes case parasitic capacitance with a floating case. For usual
grounded case applications (with ground connected to either pin 1 or pin 2
and to the case), add approximately 0.25 pF to CO.
Pb
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相关代理商/技术参数 |
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|---|---|
| RO3118A | 功能描述:谐振器 318.0 MHz +/-75kHz 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 |
| RO3118D | 功能描述:谐振器 318.0 MHz +/-75kHz 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 |
| RO3118E | 功能描述:谐振器 318.0 MHz +/-75kHz 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 |
| RO3119A | 制造商:RF Monolithics (RFM) 功能描述:IC,RESON,317.5MHZ,SMD,2SM - Tape and Reel |
| RO3120A | 功能描述:谐振器 403.55MHz BW 75KHz IL 1.1dB Typ. SAW 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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