The reference level for the relative attenuation arel of the TFS135E is the minimum of the pass band attenuation. This value is defined as the insertion loss
ae. The nominal frequency fN is fixed at 135,53 MHz without any tolerance. The frequency shift of the filter in the operating temperature range is not included
in the production tolerance scheme. But values of relative attenuation are guardbanded to compensate for the difference of frequency shift over temperature
at the limits of the operating temperature range between a device with typical frequency inversion temperature and devices at the limits of frequency inversion
temperature.
Data
Insertion loss
(reference level)
Nominal frequency
Passband
Pass band ripple
Bandwidth
1
3
40
dB
dB
dB
arel
kHz
kHz
kHz
MHz
p-p
BW
ae
f
N
PB
typ. value
4,8
-
-
1,0
dB
f
N
dB
tolerance / limit
max.
5,3
dB
135,53 MHz
± 13
3,0
kHz
dB
max.
49
58
174
kHz
kHz
kHz
min.
min.
max.
41
47
219
kHz
kHz
kHz
Relative attenuation
f
N
f
N
f
N
f
N
f
N
f
N
±
±
±
±
±
60
120
240
330
660
kHz
kHz
kHz
kHz
kHz
… f
N
±
… f
N
±
… f
N
±
… f
N
±
13
120
240
1
1,0
19
45
62
75
77
6,2
-
-
dB
dB
dB
dB
dB
dB
µs
max.
min.
min.
min.
min.
min.
max.
max.
max.
3
14
40
50
55
55
10
10
13
dB
dB
dB
dB
dB
dB
µs
dBm
V
Group delay ripple within PB
Input power level
Permissible DC voltage
Operating temperature range
Storage temperature range
Frequency inversion temperature
p-p
OTR
-
-
27,8
°
C
ppm/K
2
- 30 ° ... + 85°
C
C
- 40 ° ... + 85°
C
C
min.
max.
21,8
33,8
-
°
C
°
C
Temperature coefficient of frequency
TCf **
-0,039
*) 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
2
) x (T-T
0
)² x fTo(MHz).
Generated:
Checked / Approved:
Vectron International GmbH
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: (+49) 3328 4784-0 / Fax: (+49) 3328 4784-30
E-Mail:
tft@vectron.com
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
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