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參數資料
| 型號： | TFS525 |
| 廠商： | VECTRON INTERNATIONAL |
| 元件分類： | 聲表面波濾波器 |
| 英文描述： | Preliminary specification |
| 中文描述： | 1 FUNCTIONS, 525 MHz, SAW FILTER |
| 文件頁數： | 1/5頁 |
| 文件大小： | 69K |
| 代理商： | TFS525 |
TFS525.doc
VI TELEFILTER
Measurement condition
Ambient temperature:
Input power level:
Terminating impedances at fc
*: input: 87
// -8,4 pF (preliminary value)
output: 84
// -8,9 pF (preliminary value)
Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS 525 is the attenuation at 525 MHz. The nominal frequency fN is fixed at 525 MHz
without tolerance. The centre frequency fc is the arithmetic mean value of the upper and lower frequencies at the 30 dB filter attenuation level
relative to the insertion loss ae. The given values for the relative attenuation arel and for 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.
D a t a
Insertion loss
at
f
N
(reference level)
version 1.1
15.12.03
Preliminary specification
TFS 525 1/5
TELEFILTER GmbH
Potsdamer Strae 18
D-14 513 TELTOW / Germany
Tel: (+49) 3328 4784-0 / Fax: (+49) 3328 4784-30
E-Mail:
tft@telefilter.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.
23
°
C
0 dBm
typ. value
tolerance / limit
9,7 dB
max. 11
dB
Nominal frequency
f
N
-
525
MHz
Centre frequency
f
C
525
MHz
± 0,4 MHz
Passband
PB
-
f
N
±
2
MHz
Amplitude variation
within PB
0,75 dB
max.
1,5 dB
Relative attenuation
f
C
f
C
±
MHz .. f
C
±
... f
C
±
3
3,75
MHz
MHz
0,2 dB
1,2 dB
max.
max.
1
3
dB
dB
3
f
C
±
7,65 MHz ... f
C
±
50
MHz
40
dB
min.
30
dB
Group delay ripple
in f
N
± 2,5
Temperature coefficient of frequency
( Tc
f
)**
MHz
46
ns
max. 75
ns
20
ppm / K
-
Frequency deviation of fc over temperature T:
Operating temperature range
fc(Hz) = Tc
f
(ppm/K) x (T - T
A
) x f
CAT
(MHz)
- 40 °C... + 85
-
°C
°
C
Storage temperature range
-
- 40 °C... + 85
*) 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
:
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