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參數資料
| 型號： | TFS70AA |
| 廠商： | VECTRON INTERNATIONAL |
| 元件分類： | 聲表面波濾波器 |
| 英文描述： | Filter specification |
| 中文描述： | 1 FUNCTIONS, 70 MHz, SAW FILTER |
| 文件頁數： | 1/5頁 |
| 文件大?。?/td> | 81K |
| 代理商： | TFS70AA |
Tfs70AA.doc
VI
TELEFILTER
version 1.1
TFS 70AA
17.03.2003
1 / 5
Filter specification
1. Measurement condition :
Ambient temperature T
A
:
Input power level:
Terminating impedances at fc *) :
2. Characteristics
Remark:
Reference level for the relative attenuation
arel
of the
TFS 70AA
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 at
70 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 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
23
0
for input:
for output:
°C
dBm
238
- 4,97 pF.
284
- 3,75 pF.
typ. value
tolerance / limit
Insertion loss
( reference level ) :
ae
20,5
dB
max. 22
dB
Nominal frequency :
fN
-
70
MHz
Centre frequency :
fc
at ambient temperature
(f
CTA
)
70
MHz
Pass band :
PB
f
N
... f
N
± 9,5
MHz
Bandwidth at ambient temperature : BW
3
dB
20,10
MHz
min.
19,63
MHz
40
dB
30,20
MHz
max. 39,37
MHz
Relative attenuation :
arel
fN
... fN ±
9,5 MHz
-
max.
3
dB
fN ± 20 MHz ... fN ± 50 MHz
50
dB
min.
40
dB
Group delay ( mean value in PB ):
0,49
μs
max.
1
μs
Group delay ripple (p-p) in PB :
22
ns
max. 30
ns
Deviation from linear phase (p-p) in PB :
6° ( r.m.s. 1,7° )
Triple transit attenuation compared to main signal
47
dB
-
Crosstalk
50
dB
Temperature coefficient of frequency ( Tc
f
)
- 72
ppm/K
Frequency deviation of fc over temperature
fc(Hz) = Tc
f
(ppm/K) x (T - T
CTA
) x
f
CTA
(MHz)
Operating temperature range
OTR
- 40 °C ... + 85 °C
Storage temperature range
- 40 °C ... + 85 °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:
Dunzow W.
Checked / approved:
Dr. Bert Wall
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.
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