Filename: tfs 190e.doc
Version 1.2
23.12.2005
VI
TELEFILTER
Measurement condition
Ambient Temperature:
23
Input Power Level:
0
Terminating Impedance at fc
*
:
°C
dBm
input:
output:
Filter specification
TFS 190E
1/5
307
Ω
// - 12,4 pF
107
Ω
// - 16,9 pF
Characteristics
Remark:
The reference level for the relative attenuation arel of TFS 190E is the minimum of the pass band attenuation amin. This minimum is defined as the
insertion loss ae. The nominal frequency fN is fixed at 190 MHz without any tolerance. The given values for the relative attenuation arel and the group
delay ripple have to be reached at the frequencies given below, even 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
Insertion Loss
(Reference Level)
Nominal Frequency
Pass Band
Group Delay Variation within PB
Relative Attenuation
fN
... fN ±
@
fN ±
2,50 MHz ...
@
fN - 180,00 MHz ...
fN +
3,75 MHz ...
fN + 60,00 MHz ...
arel
1,92 MHz
MHz
MHz
MHz
MHz
MHz
MHz
ae = amin
typ. Value
21,0 dB
Limit
max. 24,0 dB
fN
PB
-
-
125
ns
fN
190,0 MHz
±
1,92 MHz
ns p-p
max. 300
0,8 dB
52
50
54
58
54
60
dB
dB
dB
dB
dB
dB
max.
min.
min.
min.
min.
min.
min.
1
30
30
45
48
43
50
dB
dB
dB
dB
dB
dB
dB
+85 ° C
°C
fN ±
2,50
fN ±
3,75
fN +
3,75
fN -
3,75
fN + 60,00
fN + 310,00
Operating Temperature Range
Storage Temperature Range
Temperature Coefficient of frequency
TC
f
**
-30...
-40... +85
- 0,036 ppm / K
2
-
*) 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.
**)
∆f(Hz)
= TCf(ppm/K) x (T-T
0
)
2
x fTo(MHz)
Generated:
Checked / Approved:
Tele Filter GmbH
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: (+49) 3328 4784-0 / Fax: (+49) 3328 4784-30
E-Mail:
tft@telefilter.com
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.
VECTRON [ Vectron International, Inc ]
