![](http://datasheet.mmic.net.cn/140000/TFS213_datasheet_4967845/TFS213_1.png)
Filename: tfs 213.doc
Version 1.2
13.07.2006
VI TELEFILTER
Filter specification
TFS 213
1/5
Tele Filter GmbH
Potsdamer Strae 18
D 14 513 TELTOW / Germany
Tel: (+49) 3328 4784-0 / Fax: (+49) 3328 4784-30
E-Mail:
tft@telefilter.com
Measurement condition
Ambient temperature:
23
°C
Input power level:
0
dBm
Terminating impedance: *
Input:
590 || -8,7 pF
Output:
506 || -9,6 pF
Characteristics
Remark:
The reference level for the relative attenuation arel of the TFS 213 is the minimum of the pass band attenuation amin. The minimum of the pass band
attenuation amin is defined as the insertion loss ae. The centre frequency fc is the arithmetic mean value of the upper and lower frequencies at the 10 dB
filter attenuation level relative to the insertion loss ae. The nominal frequency fN is fixed at 213,4 MHz without any tolerance. The given values for both the
relative attenuation arel and the group delay ripple have to be achieved 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.
D a t a
typ. value
tolerance / limit
Insertion loss
ae
5,5
dB
max.
8,2
dB
(reference level)
Nominal frequency
fN
-
213,4
MHz
Centre frequency
fC
213,4
MHz
-
Passband
PB
-
fN
±
0,25 MHz
Pass band ripple
0,05
dB
max.
0,5
dB
Relative attenuation
arel
fN
… fN ±
0,25
MHz
0,1
dB
max.
0,5
dB
fN ±
0,75
MHz … fN ±
1,5
MHz
18
dB
min.
10
dB
fN ±
1,5
MHz … fN ±
3,0
MHz
47
dB
min.
40
dB
fN ±
3,0
MHz … fN ±
4,5
MHz
54
dB
min.
50
dB
fN -
21,4
MHz
70
dB
min.
60
dB
fN ±
50,0
MHz … fN ±
200,0
MHz
65
dB
min.
50
dB
Group delay ripple within PB
250
ns
max.
500
ns
Intermodulation
**
> 38
dBm
min.
35
dBm
Input power level
-
max.
15
dBm
Operating temperature range
OTR
-
- 40 °C ... + 85°C
Storage temperature range
-
- 55 °C ... +105°C
Frequency inversion temperature
30
°C
Temperature coefficient of frequency
TCf ***
-0,037
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.
**
) fin1= 213,35 MHz; fin2= 213,3 MHz; Pin= -10 dBm fmeasurement = 213,4 MHz and fin1= 213,45 MHz; fin2= 213,5 MHz; Pin= - 10 dBm fmeasurement = 213,4 MHz.
***) f(Hz) = TCf(ppm/K) x (T-T0) x fTo(MHz)
Generated:
Checked / Approved:
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.