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参数资料
| 型号： | RO2053A-1 |
| 厂商： | RF MONOLITHICS INC |
| 元件分类： | SAW谐振器 |
| 英文描述： | 1-PORT SAW RESONATOR, 310 MHz |
| 封装： | ROHS COMPLIANT, CERAMIC, CASE SM-2, 4 PIN |
| 文件页数： | 1/2页 |
| 文件大小： | 117K |
| 代理商： | RO2053A-1 |
www.RFM.com
E-mail: info@rfm.com
Page 1 of 2
2008 by RF Monolithics, Inc.
RO2053A-1 - 3/25/08
Electrical Characteristics
Characteristic
Sym
Notes
Minimum
Typical
Maximum
Units
Center Frequency at +25 °C
Absolute Frequency
fC
2, 3, 4, 5
309.950
310.0
310.050
MHz
Tolerance from 310.000 MHz
ΔfC
±50
kHz
Insertion Loss
IL
2, 5, 6
1.7
2.0
dB
Quality Factor
Unloaded Q
QU
5, 6, 7
19,063
50
Ω Loaded Q
QL
2,157
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
≤10
ppm/yr
DC Insulation Resistance between Any Two Terminals
5
1.0
M
Ω
RF Equivalent RLC Model
Motional Resistance
RM
5, 6, 7, 9
12.78
13
Ω
Motional Inductance
LM
124.87
H
Motional Capacitance
CM
2.11
fF
Shunt Static Capacitance
CO
5, 6, 7, 9
2.7
2.34
2.43
pF
Test Fixture Shunt Inductance
LTEST
2, 7
101.87
104.58
nH
Lid Symbolization (in Addition to to Lot and/or Date Code)
308
Ideal for 310.0 MHz Transmitters
Very Low Series Resistance
Quartz Stability
Surface-Mount Ceramic Case with 21 mm2 Footprint
Complies with Directive 2002/95/EC (RoHS)
The RO2053A-1 is a one-port, surface-acoustic-wave (SAW) resonator in a surface-mount ceramic case. It
provides reliable, fundamental-mode, quartz frequency stabilization of local oscillatiors operating at 310 MHz.
Applications include automotive keyless entry receivers operating in the USA under FCC Part 15 and in
Canada under DoC RSS-210.
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
310.0 MHz
SAW
Resonator
RO2053A-1
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
Notes:
1.
Lifetime (10 year) frequency aging.
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.
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 manufac-
turer.
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].
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 measure-
ment includes parasitic capacitance with ”NC” pads unconnected. Case parasitic capacitance is approximately 0.05 pF. Transducer parallel capaci-
tance can by calculated as: CP ≈ CO -0.05 pF.
SM-2 Case
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