Filename: tfs 104.doc
Version 1.4
01.04.2009
Microchip
Filter specification
TFS 104
1/5
Measurement condition
Ambient temperature:
Input power level:
Terminating impedance: *
Input:
23
0
°C
dBm
2800 Ω || -2,5 pF
2800 Ω || -2,5 pF
560 nH
Output:
External Coil:
Characteristics
Remark:
The reference level for the relative attenuation a of the TFS 104 is the minimum of the pass band attenuation. This value is defined as the insertion loss
rel
a . The nominal frequency f is fixed at 104.0 MHz without any tolerance. The values of relative attenuation a
are guaranteed for the whole operating
e
N
rel
temperature range. The frequency shift of the filter in the operating temperature range is included in the production tolerance scheme.
D a t a
typ. value
tolerance / limit
Insertion loss
a
4,8
dB
max.
6
dB
e
(reference level)
Nominal frequency
Passband
fN
PB
-
104,0
49
MHz
kHz
dB
-
fN
±
Pass band ripple
Relative attenuation
fN
0,8
dB
dB
max.
1,5
a
rel
… fN
±
66
kHz
1,2
max.
3
dB
fN
fN
fN
fN
fN
fN
fN
fN
±
±
+
+
+
-
150
180
240
600
1,2
240
11,0
16
kHz ... fN
kHz ... fN
kHz ... fN
kHz ... fN
MHz ... fN
kHz ... fN
MHz ... fN
MHz ... fN
±
±
+
+
+
-
180
240
600
kHz
kHz
kHz
MHz
MHz
MHz
MHz
MHz
21
dB
dB
dB
dB
dB
dB
dB
dB
min.
min.
min.
min.
min.
min.
min.
min.
18
25
40
37
40
40
36
40
dB
dB
dB
dB
dB
dB
dB
dB
28
43
40
43
45
38
45
1,2
50
11
16
50
-
-
-
-
Group delay ripple
fN 49 kHz
Input power level
±
2
-
µs
max.
max.
3,0
13
µs
dBm
Operating temperature range
Storage temperature range
OTR
-
-
- 25 °C ... + 85 °C
- 33 °C ... + 85 °C
Frequency inversion temperature
Temperature coefficient of frequency
25
°C
-
-
TC **
-0,036 ppm/K²
f
*) 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) = TC (ppm/K2) x (T-T0)² x f (MHz).
f
To
Generated:
Checked / Approved:
Microchip Frequency Technology GmbH
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: (+49) 3328 4784-0 / Fax: (+49) 3328 4784-30
Microchip Frequency Technology GmbH 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.