TFS400A Datasheet, PDF (1/4 Pages) Vectron International, Inc – Filter specification

_^tfs_⁴_⁰_⁰_^a_^.d_^o_^c________________________________________________v_e_r_s_io_n__1_.2________________________0_6_._0_1_.0_2________
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_{__}t_{_}io_{__}n_{___________________}T_{__}F_{_}S_{___}4_{__}0_{_}0_{__}A_{_______}1_{_}/_{_}4_{__}
Application
The filter is suitable for GSM, DCS 1800 and dual band receivers. It can especially be used in the first IF in which
full channel selectivity is not necessary. Due to the high frequency the filter is small, thus it saves cost and space
on the printed circuit board. As it has symmetrical input and output it does not need any transformation networks
in state of the art IC transceiver concepts in which symmetrical inputs and outputs are favourable.
Measurement condition
Ambient temperature: 23 °C
Input power level:
0 dBm
Source impedance: balanced 770 Ω II - 0.8 pF
Load impedance: balanced 770 Ω II - 0.8 pF
Construction and pin configuration
see page 2
Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS 400 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 400,000 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
4,5
max. 6,5 dB
(Reference level)
______________________________________________________________________________________________________
C_{__}e_{_}n_{_}t_{_}r_{_}e_{__}fr_{_}e_{_}q_{_}u_{__}e_{_}n_{_}c_{_}y_{________f_N__________________________________}-_{____________________________}4_{_}0_{_}0_{_},0_{__}0_{_}0_{__}M_{__}H_{_}z_{____}
C_{__}e_{_}n_{_}t_{_}r_{_}e_{__}fr_{_}e_{_}q_{_}u_{__}e_{_}n_{_}c_{_}y_{________f_o_______________________________}4_{_}0_{_}0_{__},0_{_}1_{_}2_{__}M_{__}H_{_}z_{______________________}-_{_____________}
3 dB bandwidth
BW
360 kHz
min. 280 kHz
______________________________________________________________________________________________________
Relative attenuation arel
400 MHz ± 70 kHz
1 dB
max. 3 dB
400 MHz ± 400 kHz
25 dB
min. 15 dB
400 MHz ± 600 kHz
35 dB
min. 27 dB
400 MHz ± >1 MHz ... f ± 13 MHz
44 dB
min. 35 dB
______________________________________________________________________________________________________
Group delay ripple
GD
400 MHz ± 70 kHz
0,5 µs
max. 2 µs
______________________________________________________________________________________________________
Operating temperature range
- 20 °C ... + 70 °C
__________________________________________________________________________________________
Temperature coefficient of frequency TC
ca. - 0.036 ppm/K²
__________________________________________________________________________________________
Frequency inversion temperature
+ 20 °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]
Tel: [phone] Fax: [phone]
E-Mail: [e-mail]
E-Mail: [e-mail]
VI TELEFILTER reserves the right to make changes to the product(s) and/or information contained herein without notice. No liability is
assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information.