TFS178 Datasheet, PDF (1/5 Pages) Vectron International, Inc – Vectron International Filter specification

Filename: tfs 178.doc
Vectron International
Version 2.0
Filter specification
Measurement condition
Ambient temperature:
Input power level:
source impedance (balanced):
load impedance (balanced):
Terminating impedance: *
Input:
Output:
23
0
200 Ω
200 Ω
°C
dBm
216 Ω || -6.9 pF
166 Ω || -9.1 pF
TFS 178
02.11.2012
1/5
Characteristics
Remark:
The reference level for the relative attenuation arel of the TFS178 is the minimum of the pass band attenuation. This value is defined
as the insertion loss ae. The nominal frequency fN is fixed at 178 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
Pass band ripple
ae
12,9 ^dB
fN
PB
0,1 ^dB
max.
15,5 dB
fN
max.
178
MHz
± 10 MHz
2,0 dB
Bandwidth
3 dB
24
MHz
min.
20 MHz
Relative attenuation
fN -
10
fN -
50
fN -
35
fN -
25
fN + 18
fN + 25
fN + 35
MHz … fN + 10
MHz … fN - 35
MHz … fN - 25
MHz … fN - 18
MHz … fN + 25
MHz … fN + 35
MHz … fN + 50
Group delay ripple in fN " 4 MHz *)
Group delay ripple in PB *)
Group delay variation (unit to unit) *), **)
arel
MHz
MHz
MHz
MHz
MHz
MHz
MHz
GDR
GDR
2
dB
48
dB
44
dB
25
dB
19
dB
34
dB
47
dB
6
ns
6
ns
max.
min.
min.
min.
min.
min.
min.
max.
max.
max.
3 dB
40 dB
30 dB
10 dB
10 dB
30 dB
40 dB
"8 ns
"9 ns
"2,5 ns
Return loss within PB
Input power level
8
dB
min.
max.
6 dB
10 dBm
Operating temperature range
OTR
- 40 °C ... + 85°C
Storage temperature range
- 45 °C ... + 85°C
Temperature coefficient of frequency
TCf ****)
-92
ppm/K
*) time gating window 0 … 0.5µs
**) Measured at centre frequency, and averaged value to account for unit to unit variation and different bandwidth variants
***) ∆fc(Hz) = Tcf(ppm/K) x (T - To) x fCAT (MHz).
Generated:
Checked / Approved:
Vectron International GmbH
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: [phone] / Fax: [phone]
E-Mail: [e-mail]
Vectron International GmbH 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.