R900 Datasheet, PDF (3/4 Pages) EPCOS – SAW Components

SAW Components
Resonator
Data Sheet
Characteristics
Reference temperature:
Terminating source impedance:
Terminating load impedance:
T_A = 25 ˚C
Z_S = 50 Ω
Z_L = 50 Ω
R900
433,92 MHz
Center frequency ¹⁾
min.
typ.
max.
f_c
433,845 433,920 433,995 MHz
Minimum insertion attenuation
Unloaded quality factor
Ageing of f_c
Equivalent circuit elements
Motional capacitance
Motional inductance
Motional resistance
Parallel capacitance ²⁾
Temperature coefficient of frequency ³⁾
Turnover temperature
α_min
—
1,4
1,9 dB
Q_U
8300 12000
—
—
—
-50/+50 ppm
C₁
—
1,685
— fF
L₁
—
79,82
— µH
R₁
—
18
26 Ω
C₀
—
2,3
— pF
TC_f
—
–0,032
— ppm/K²
T₀
20
—
50 ˚C
1) _{Center frequency is defined as maximum of the real part of the admittance}
2) _{If used in two port configuration (pin 2-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₎
3 Oct 08, 2004