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参数资料
| 型号： | TFS549A |
| 厂商： | VECTRON INTERNATIONAL |
| 元件分类： | 声表面波滤波器 |
| 英文描述： | 1 FUNCTIONS, 549.5 MHz, SAW FILTER |
| 文件页数： | 1/5页 |
| 文件大小： | 166K |
| 代理商： | TFS549A |
Filename: tfs 549a.doc
Version 1.2
13.07.2004
VI TELEFILTER
Filter specification
TFS 549A
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
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.
Measurement condition
Ambient temperature:
23
°C
Input power level:
0
dBm
Terminating impedance: *
for input:
956 || -3,0 pF
for output:
718 || -3,6 pF
Characteristics
Remark:
The reference level for the relative attenuation arel of TFS 549A is the minimum of the pass band attenuation amin. This value 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 given values for the relative attenuation arel and 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
typ. value
tolerance / limit
Insertion loss
ae
13,8
dB
max.
15
dB
(reference level)
-
Nominal frequency
fN
-
549,5
MHz
Passband
Pass band ripple
within PB
-
fN
max.
±
2,5
0,5
MHz
dB
Relative attenuation
arel
fN
MHz ... fN ±
2,5
MHz
0,5
dB
max.
1
dB
fN ±
4
MHz ... fN ±
6,5
MHz
8
dB
min.
3
dB
fN ±
6,5
MHz ... fN ±
22
MHz
44
dB
min.
39
dB
fN -
548,5
MHz ... fN -
22
MHz
55
dB
min.
50
dB
fN +
22
MHz ... fN +
451,5
MHz
54
dB
min.
50
dB
Absolute group delay
600
ns
max.
800
ns
Group delay ripple within PB
10
ns
max.
50
ns
Phase linearity (p-p)
at any 2 MHz band width in PB
1,8
deg
max.
2,55 deg
Triple transit response suppression
53
dB
min.
30
dB
VSWR
1,5:1
max.
2:1
Operating temperature range
OTR
-
- 10°C ... + 65°C
Storage temperature range
-
- 25°C ... + 75°C
Turn over temperature
28
°C
-
Temperature coefficient of frequency
TCf **
-0,05
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.
**) f(Hz) = TCf(ppm/K) x (T-T0) x fTo(MHz)
Generated:
Checked / Approved:
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