TFS71M Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter specification

Filename: tfs 71m.doc
VI TELEFILTER
Version 1.2
Filter specification
TFS 71M
30.11.2006
1/5
Measurement condition
Ambient temperature:
Input power level:
Terminating impedance: *
Input:
Output:
23
°C
0
dBm
1640 Ω || -13,9 pF
1250 Ω || -12,8 pF
Characteristics
Remark:
The reference level for the relative attenuation arel is the pass band attenuation at the nominal frequency f_N. This value is defined as the insertion loss ae.
The centre frequency fc is the arithmetic mean value of the upper and lower frequencies at the 3 dB filter attenuation level relative to the insertion loss ae.
The given values for the centre frequency, 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
ae
(reference level)
Nominal frequency
f_N
Centre frequency
f_C
Passband
Relative attenuation
f_N
... f_N ±
f_N ±
f_N ±
f_N +
f_N -
f_N -
f_N ±
f_N -
f_N +
f_N +
200
400
600
600
800
1,0
1,2
1,2
3,0
kHz ... f_N ±
kHz ... f_N ±
kHz ... f_N +
kHz ... f_N -
kHz ... f_N -
MHz ... f_N ±
MHz ... f_N -
MHz ... f_N +
MHz ... f_N +
Group delay
arel
100
kHz
400
600
1,0
800
1,0
1,2
20
3,0
20
kHz
kHz
MHz
kHz
MHz
MHz
MHz
MHz
MHz
mean value in PB
Group delay
mean value in PB
Group delay ripple within PB
Operating temperature range
Storage temperature range
Frequency inversion temperature
Temperature coefficient of frequency
OTR
TCf ***)
Intermodulation
**)
Input power level
typ. value
6,6
dB
-
-
-
1,6
5
33
43
43
45
50
50
48
55
3,3
3,3
270
-
-
40
-0,04
-105
-
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
µs
µs
ns
°C
ppm/K²
dBm
tolerance / limit
max.
8,0 dB
71,0 MHz
f_N ±
71
± 20
100
MHz
kHz
kHz
max.
3 dB
min.
3 dB
min.
25 dB
min.
35 dB
min.
38 dB
min.
35 dB
min.
42 dB
min.
40 dB
min.
39 dB
min.
35 dB
min.
3,1 µs
max.
5,0 µs
max. 500 ns
0 °C ...+ 85 °C
- 40°C ... + 85 °C
-
-
max.
max.
-81 dBm
20 dBm
*) 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.
**) first measurement: f_in1= 70,2 MHz; f_in2= 69,4 MHz; P_in=-5 dBm f_measurement = 71,0 MHz
second measurement: f_in1= 71,8 MHz; f_in2= 72,6 MHz; P_in=-5 dBm f_measurement = 71,0 MHz.
***) ∆f(Hz) = TCf(ppm/K²) x (T-T₀)² x fTo(MHz)
Generated:
Checked / Approved:
Filter characteristic
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D 14 513 TELTOW / Germany
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