LGER550 [LGE]
SAW Resonator; 声表面波谐振器型号: | LGER550 |
厂家: | LGE |
描述: | SAW Resonator |
文件: | 总2页 (文件大小:1148K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
SAW Resonator
LGER550
The LGER550 is a true one-port,surface-acoustic-wave (SAW) resonator in a surface-mount ceramic
QCC8C case. It provides reliable , fundamental-mode , quartz frequency stabilization of
fixed-frequency transmitters operating at 433.920 MHz.
1.Package Dimension
(QCC8C)
Pin
Connection
2
6
Input / Output
Output / Input
4,8
Case Ground
1,3,5,7
Empty
Sign
A
Data (unit: mm)
Sign
Data(unit:mm)
2.08
0.60
1.27
2.54
E
F
1.20
1.35
5.00
5.00
B
C
G
H
D
2.Marking
3.Equivalent LC Model and Test Circuit
LGER550
Color: Black or Blue
4.Typical Application Circuit
1) Telecontrol Circuitry
2) Local Oscillator Application
5.Typical Frequency Response
6.Temperature Characteristics
SAW Resonator
LGER550
7.Performance
7-1.Maximum Ratings
Rating
Value
+10
Units
dBm
VDC
℃
CW RF Power Dissipation
DC Voltage Between Any Two Pins
Case Temperature
±30V
-40 to +85
+235
Soldering Temperature
℃
7-2.Electronic Characteristics
Characteristic
Sym
Minimum
Typical
Maximum
Units
Absolute Frequency
Center Frequency
fC
∆fC
IL
433.845
433.995
MHz
kHz
dB
(+25℃)
Tolerance from 433.920 MHz
±75
1.3
Insertion Loss
2.0
55
Unloaded Q
Quality Factor
QU
QL
TO
fO
10,500
1,450
40
50 Ω Loaded Q
Turnover Temperature
25
1.0
1.9
℃
kHz
ppm/℃2
ppm/yr
MΩ
Temperature
Turnover Frequency
Stability
fc
Frequency Temperature Coefficient
Frequency Aging Absolute Value during the First Year
DC Insulation Resistance Between Any Two Pins
Motional Resistance
FTC
|fA|
0.037
≤10
RM
LM
16
26
Ω
Motional Inductance
RF Equivalent
61.724
2.1817
2.2
µH
RLC Model
Motional Capacitance
CM
CO
fF
Pin 2 to Pin 6 Static Capacitance
2.5
pF
☺ CAUTION: Electrostatic Sensitive Device. Observe precautions for handling !
NOTES:
1. Frequency aging is the change in fC with time and is specified at +65℃or less. Aging may exceed the specification for prolonged
temperatures above +65℃. Typically, aging is greatest the first year after manufacture, decreasing in subsequent years.
2.The center frequency, fC ,is the frequency of minimum IL measured with the resonator in the specified test fixture in a 50 Ω test system
with VSWR ≤ 1.2 : 1. Typically, foscillator or ftransmitter is approximately equal to the resonator fC.
3.Typically, equipment utilizing this device requires emissions testing and government approval, which is the responsibility of the
equipment manufacturer.
4.Unless noted otherwise , case temperature TC=+25℃±2℃.
5.The design, manufacturing process, and specifications of this device are subject to change without notice.
6.Derived mathematically from one or more of the following directly measured parameters: fC, IL, 3 dB bandwidth, fC versus TC , and CO.
7.Turnover temperature, TO, is the temperature of maximum (or turnover) frequency, fO, The nominal center frequency at any case
temperature , TC, may be calculated from :f = fO[1-FTC (TO-TC) 2].Typically, oscillator TO is approximately equal to the specified
resonator TO.
8.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 (10MHz) with a
capacitance meter. Case parasitic capacitance is approximately 0.05pF.Transducer parallel capacitance can by calculated as: CP = CO -
0.05pF.
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