version 3.2
13.06.2000
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tfs400c.doc
VI
TELEFILTER
SAW Filter Specification
TFS 400 C
1/5
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Measurement condition
Ambient temperature:
23
°C
Input power level:
0 dBm
Terminating impedances
for input: 500
Ω
// -1 pF
for output: 500
Ω
// -1 pF
Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS 400 C 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 3
dB filter attenuation level relative to the insertion loss ae. The nominal frequency fN is fixed on 400 MHz without tolerance. The given values for the
relative attenuation arel and for the group delay ripple have to be reached at the frequencies given below also if the centre frequency fo 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
Centre frequency
ae = amin
fN
fc
typ. value
3,7
dB
tolerance/limit
max.
6,5
dB
-
400,008 MHz
BW
-
min.
400,000 MHz
Guaranteed 1,5 dB signal band width
Relative attenuation
fN ± 80 kHz
fN
fN
fN
fN
fN
± 200 kHz ... fN
± 400 kHz ... fN
± 600 kHz ... fN
±
1 MHz ... fN
±
3 MHz
arel
± 400 kHz
± 600 kHz
±
1 MHz
±
3 MHz
160
kHz
0.8
8
30
52
54
61
dB
dB
dB
dB
dB
dB
max.
min.
min.
min.
min.
min.
1,5
2
25
40
45
55
dB
dB
dB
dB
dB
dB
Group delay ripple
fN ± 70 kHz
GD
0,7
µs
max.
2
µs
°C
Operating temperature range
Temperature coefficient of frequency
Frequency inversion temperature
TC
ca. - 0.036 ppm/K²
+ 20
°C
- 10
°C
... + 55
Generated:
Checked / approved:
VI TELEFILTER
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: (+49) 3328 4784-52 / Fax: (+49) 3328 4784-30
E-Mail: tft@telefilter.com
Vectron International Inc.
267 Lowell Road
Hudson, NH 03051 / USA
Tel: (603) 598-0070 Fax: (603) 598-0075
E-Mail: vti@vtinh.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 ]
