TFS248A Datasheet, PDF (1/4 Pages) Vectron International, Inc – Filter specification

t_{_}fs_{_}2_{_}48_{_}A_{_}.d_{_}o_{_}c_{_________________________________________________________}v_{_}e_{_}rs_{_}i_{_}on_{__}1_{_}.1_{___________________________}0_{_}1_{_}/_{_}99_{_}
V_{__}I_{__}T_{_}E_{__}L_{_}E_{__}F_{_}I_{_}L_{__}T_{_}E_{__}R_{_______________________________}F_{__}i_{_}lt_{_}e_{__}r_{__}s_{_}p_{__}e_{_}c_{__}if_{_}i_{_}c_{_}a_{__}ti_{_}o_{__}n_{____________}T_{_}F_{__}S_{___}2_{_}4_{_}8_{___}A_{_____}1_{__}/_{_}4_{_}
Measurement condition
Ambient temperature: 23 °C
Input power level:
0 dBm
Terminating impedances
for input: T.B.D
for output: T.B.D
Construction
see page 2
Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS 248 A is the minimum of the pass band attenuation amin. The minimum of the pass
band attenuation amin is defined as the insertion loss ae. The centre frequency fo is the arithmetic mean value of the upper and lower frequencies at
the 3 dB filter attenuation level relative to the insertion loss ae. The nominal frequency fN is fixed on 248,45 MHz without tolerance. The given
values for the relative attenuation arel and for the group delay ripple have to be reached at the frequencies given below also if the centre frequency
fo is shifted due to the temperature coefficient of frequency TCf in the operating temperature range and due to a production tolerance for the centre
frequency fo.
Data
typ. value
tolerance / limit
______________________________________________________________________________________________________
Insertion loss
ae = amin
-
max 5
dB
(Reference level)
______________________________________________________________________________________________________
N_{__}o_{_}m_{__}in_{_}a_{_}l_{_}f_{_}re_{_}q_{__}u_{_}e_{_}n_{_}c_{_}y_{_______}fN_{____________________________________-____________________________2_4_8_,4_5____M_H_z_____}
Pass band ripple
f_N__-_8_5_k_H__z__.._. _{_f_N_+__9_3__kH__z_____________________________________-_________________________m__a_x__1_,5_____d_B______}
Relative attenuation
arel
248,45 MHz ±600 kHz ... 248,45 MHz ± 1,2 MHz
-
min 30
dB
248,45 MHz ± 1,2 MHz ...248,45 MHz ± 25 MHz
-
min 45
dB
______________________________________________________________________________________________________
Group delay distortion GD
2,5
µs
-
248,45 MHz ±110 kHz
-
max 1,5 µs
______________________________________________________________________________________________________
Operating temperature range
- 20 °C ... + 70 °C
______________________________________________________________________________________________________
_^T_^e_^m_^p_^e_^r_^a_^t_^u_^re__^c_^o_^e_^f_^fi_^c_^ie_ⁿ_^t_^o__^f _^fr_^e_^q_^u_^e_ⁿ_^c_^y____^T_^C_^f____________________-__0_,0_3_6__p_p_m__/K__² ___________________-_____________
Frequency inversion temperature
+ 25
°C
______________________________________________________________________________________________________
Generated:
Checked / approved:
______________________________________________________________________________________________________
VI TELEFILTER
Vectron International, Inc.
Potsdamer Straße 18
267 Lowell Road
D 14 513 TELTOW / Germany
Hudson, NH 03051 / USA
Tel: [phone] / Fax: [phone]
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