TFS77B Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter specification

Filename: tfs 77b.doc
VI TELEFILTER
Measurement condition
Ambient temperature:
Input power level:
Terminating impedance: *
Input:
Output:
Version 1.2
Filter specification
25
°C
0
dBm
48 Ω || 2,5 pF
44 Ω || 8,5 pF
TFS 77B
12.05.2006
1/5
Characteristics
Remark:
The reference level for the relative attenuation arel of the TFS 77B is the minimum of the pass band attenuation. This value is defined as the insertion loss
ae. The nominal frequency fN is fixed at 77,8 MHz without any tolerance. The values of relative attenuation arel are guaranteed for the whole operating
temperature range. The frequency shift of the filter in the operating temperature range is included in the production tolerance scheme.
Data
typ. value
tolerance / limit
Insertion loss
(reference level)
Nominal frequency
Passband
ae
8,9 dB
f_N
77,8 MHz
PB
15,2 MHz
max.
11,0 dB
77,8 MHz
f_N
± 7,12 MHz
Amplitude ripple in PB
p-p
0,4 dB
max.
1 dB
Relative attenuation
f_N -
7,12 MHz … f_N +
f_N ±
f_N ±
8,8 MHz
9,6 MHz
f_N -
f_N -
77,5 MHz ... f_N -
22,8 MHz ... f_N -
f_N +
f_N +
12,2 MHz ... f_N +
22,2 MHz ... f_N +
Absolute group delay in PB
arel
7,12 MHz
22,8 MHz
12,8 MHz
22,2 MHz
50
MHz
0,6 dB
6,7 dB
24
dB
58
dB
42
dB
39
dB
43
dB
1,09 µs
max.
min.
min.
min.
min.
min.
min.
1 dB
3 dB
16 dB
45 dB
30 dB
30 dB
40 dB
-
Group delay ripple in PB
p-p
Phase linearity in PB
p-p
Triple transit response suppression
86
ns
7
deg
70
dB
max. 130 ns
max.
10 deg
min.
35 dB
Input / Output return loss
14
dB
min.
10 dB
Input power level
-
max.
23 dBm
Operating temperature range
OTR
-
-10 °C ... + 75 °C
Storage temperature range
-
-35 °C ... + 85 °C
Temperature coefficient of frequency
TCf ***
-90
ppm/K
-
*) The terminating impedances depend on parasitics and q-values of matching elements and the board used, and are to be understood as reference
values only. Should there be additional questions do not hesitate to ask for an application note or contact our design team.
**) Target is 10 dB min using resistive matching
***) ∆fc(Hz) = TC_f(ppm/K) x (T - T_o) x f_To (MHz).
Generated:
Checked / Approved:
Tele Filter GmbH
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: [phone] / Fax: [phone]
E-Mail: [e-mail]
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