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TFS124 Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter Specification
T_f_s_1_24_._d_oc________________________________________________v_er_s_io_n_1_._5_________________________0_1._0_2_.2_0_0_1________
VI TELEFILTER
Filter Specification
TFS 124
1/5
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Measurement condition
Ambient temperature: 23 °C
Input power level :
5 dBm
Terminating impedances
for input: 1,2 kOhm // -3,3 pF
for output: 1,2 kOhm // -3,3 pF
External coil:
292 nH // 4 kOhm
Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS 124 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 fc is the arithmetic mean value of the upper and lower frequencies at the
3dB filter attenuation level relative to the insertion loss ae. The nominal frequency fN is fixed on 124,8 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 fc 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 fc.
Data
typ. Value
tolerance / limit
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Insertion loss
ae
2,7
dB
max 4
dB
(Reference level)
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_C_e_n_tr_e__f_r_e_q_u_e_n_c_y________fc___________________________1_2_4_,_7_9_____M_H_z________________________________________
_N_o_m__in_a_l_f_re_q__u_e_n_c_y_______fN______________________________- __________________________________1_2_4_,8_____M_H_z_____
3 dB bandwidth
173
kHz
min 52
kHz
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Relative attenuation
arel
fN
... fN ± 26 kHz
1
dB
max 3
dB
fN ±125 kHz ... fN ± 250 kHz
6
dB
-
fN ±250 kHz ... fN ± 0,7 MHz
37
dB
-
fN + 0,7 MHz ... fN + 30 MHz
36 ... 65 dB
min 35
dB
fN - 0,7 MHz ... fN - 10 MHz
36 ... 65 dB
min 35
dB
fN - 10 MHz ... fN - 17 MHz
36 ... 65 dB
min 34
dB
f_N__-__1_7____M__H_z_._.._f_N__-___3_0_____M_H_z_____________________3_6__.._. _6_5___d_B_____________________m_i_n____3_5______d_B______
_G_r_o_u_p_d__e_la_y__ri_p_p_l_e__f_N_±__2_6__k_H_z_________________________0_,_4_5_____µ_s_____________________m_a_x_____0_,7_5____µ_s______
Input power level
-
max 10
dBm
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Intermodulation in the composite signal by
fN + 50 kHz and fN + 100 kHz each of -14 dBm
85
dBm
max -60
dBm
f_N__-__5_0__k_H_z__a_n_d__f_N__-__1_0_0__k_H_z__e_a_c_h__o_f _-1_4__d_B_m__________8_5________d_B_m____________________m_a_x___-_6_0______d_B_m_____
Temperature coefficient of frequency (* TCf)
- 0,032 ppm/K²
-
Frequency inversion temperature
(To)
20
°C
-
Operating temperature range
- 40 °C ... + 85°C
Storage temperature range
- 40 °C ... + 85°C
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*) ∆f(Hz) = TCf(ppm/K²) x (∆T)² x fTo(MHz
*) fTo is reference frequence fc at frequency inversion temperature (To)
Generated:
Checked / approved:
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VI TELEFILTER
Vectron International, Inc.
Potsdamer Straße 18
267 Lowell Road
D 14 513 TELTOW / Germany
Hudson, NH 03051 / USA
Tel: (+49) 3328 4784-0 / Fax: (+49) 3328 4784-30
Tel: (603) 598-0070 Fax: (603) 598-0075
E-Mail: tft@telefilter.com
E-Mail: vti@vtinh.com
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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