R771 Ver la hoja de datos (PDF) - EPCOS AG
Número de pieza
componentes Descripción
Fabricante
R771 Datasheet PDF : 5 Pages
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SAW Components
Resonator
Data Sheet
Characteristics Resonator 2
Reference temperature:
Terminating source impedance:
Terminating Load impedance:
Center frequency Resonator 21)
R 771
314,875 / 315,125 MHz
TA = 25 ˚C
ZS = 50 Ω
ZL = 50 Ω
min.
typ.
max.
fc
315,075 315,125 315,175 MHz
Frequency offset Resonator 2 to Resonator 1 foffset 200,0 250,0 300,0 KHz
Minimum insertion attenuation
Unloaded quality factor
αmin
—
1,3
QU
9600 13200
Ageing of fc
—
—
Equivalent circuit elements
Motional capacitance
Motional inductance
Motional resistance
Parallel capacitance2)
Temperature coefficient of frequency3)
Turnover temperature
C2
—
2,38
L2
—
107,32
R2
—
16
C02
—
3,1
TCf
—
– 0,03
T0
0
—
1) Center frequency is defined as the maximum of the real part of the admittance.
2) If used in two port configuration (pin 3-input, pin 5-output) C0 is reduced by approx. 0,3 pF.
3) Temperature dependence of fc: fc(TA) = fc(T0)(1 + TCf(TA – T0)2)
1,6 dB
—
± 50 ppm
— fF
— µH
22 Ω
— pF
— ppm/K2
30 ˚C
4 Mar 03, 2004
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