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TFS221A Filter Specification
型号:   TFS221A
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描述:   Filter Specification
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品牌   VECTRON [ Vectron International, Inc ]
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TFS 221a.doc
version 1.4
27.03.2002
VI
TELEFILTER
Measurement condition
Ambient temperature T
A
:
Input power level:
Terminating impedances at fc*:
23 °C
0 dBm
input:
output:
Filter Specification
TFS 221A
1/5
327
// -13,1 pF
361
// -11,2 pF
Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS 221A is the insertion loss. 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 1 dB filter attenuation level
relative to the insertion loss ae. The temperature coefficient of frequency Tc
f
is valid both for the reference frequency fc and the frequency response
of the filter in the operating temperature range.
Data
Insertion loss
(Reference level)
ae
fc
arel
1,0
MHz
typ. value
8,3
dB
tolerance / limit
max
9,0
dB
Centre frequency
Relative attenuation
fc
@ fc -
@ fc -
9,75 MHz
5,00 MHz
MHz ...... fc + 100
MHz ...... fc + 255
...... fc ±
-
221,000 MHz
±
1,0
MHz
-
55
55
dB
dB
max
min
min
min
min
1
50
50
50
50
-18
dB
dB
dB
dB
dB
ppm/K
fc + 89
fc +249
MHz
MHz
-
-
Temperature coefficient of frequency ( Tc
f
)
Frequency deviation of fc over temperature T:
Operating temperature range
Storage temperature range
∆f
c(Hz) = Tc
f
(ppm/K) x (T - T
A
) x f
CAT
(MHz)
- 30 °C ... + 80
- 40 °C.... + 85
°C
°C
*)
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.
generated:
checked / approved:
VI TELEFILTER
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: (+49) 3328 4784-0 / 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
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