tfs285 Vectron International, Inc., tfs285 Datasheet

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tfs285

Manufacturer Part Number
tfs285
Description
Vi Telefilter Filter
Manufacturer
Vectron International, Inc.
Datasheet
Tfs285.doc
______________________________________________________________________________________________________
VI TELEFILTER
______________________________________________________________________________________________________
Measurement condition
Ambient temperature:
Input power level:
Terminating impedance
Characteristics
Remark:
Reference level for the relative attenuation a rel of the TFS 285 is the minimum of the pass band attenuation a min . The minimum of the pass band
attenuation a min is defined as the insertion loss a e . The centre frequency f o is the arithmetic mean value of the upper and lower frequencies at the
30 dB filter attenuation level relative to the insertion loss a e . The nominal frequency f N is fixed on 285 MHz without tolerance. The given values for
the relative attenuation a rel and for the group delay ripple have to be reached at the frequencies given below also if the centre frequency f o is shifted
due to the temperature coefficient of frequency TC f in the operating temperature range and due to a production tolerance for the centre frequency f o
D a t a
______________________________________________________________________________________________________
Insertion loss
(Reference level)
______________________________________________________________________________________________________
Nominal frequency
_____________________________________________________________________________________________________
Pass band
Pass band ripple
Passband width
______________________________________________________________________________________________________
Group delay
Group delay ripple
______________________________________________________________________________________________________
Relative attenuation
f N -
f N +
______________________________________________________________________________________________________
VSWR ratio
______________________________________________________________________________________________________
Operating temperature range
______________________________________________________________________________________________________
Temperature coefficient of frequency
______________________________________________________________________________________________________
Input power level
______________________________________________________________________________________________________
Generated:
Checked / approved:
______________________________________________________________________________________________________
VI TELEFILTER
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: (+49) 3328 4784-52 / 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.
75
20
Input
Output
at f
N
– 7,5 MHz ... f
MHz ...
MHz ...
GD
f N - 20
f N + 75
N
a e = a min
f N
f N
3 dB
f N
a rel
+ 7,5 MHz
23
0
30
35
7,5 MHz
7,5 MHz
dBm
MHz
MHz
C
|| -21.2 pF
|| -21.6 pF
TC f
Filter specification
version 2.0
typ. value
- 72
90
38
38
9,5
0,8
-
-
dB
dB
ns
dB
dB
ppm/K
Vectron International, Inc.
267 Lowell Road
Hudson, NH 03051 / USA
Tel: (603) 598-0070 Fax: (603) 598-0075
E-Mail: vti@vtinh.com
tolerance / limit
TFS 285
max.
max.
min.
max. 150
min.
min.
max.
- 5 C ... + 85 C
max. + 10
285
12
20
30
30
07.07.2000
1,2
2 : 1
dB
MHz
dB
MHz
ns
dB
dB
dBm
1/5

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tfs285 Summary of contents

Page 1

... Tfs285.doc ______________________________________________________________________________________________________ VI TELEFILTER ______________________________________________________________________________________________________ Measurement condition Ambient temperature Input power level: 0 dBm Terminating impedance Input 30 || -21.2 pF Output 35 || -21.6 pF Characteristics Remark: Reference level for the relative attenuation a rel of the TFS 285 is the minimum of the pass band attenuation a min . The minimum of the pass band attenuation a min is defined as the insertion loss a e ...

Page 2

... Tfs285.doc ______________________________________________________________________________________________________ VI TELEFILTER ______________________________________________________________________________________________________ Construction and pin connection S 285 M27 50 test circuit C1 10 Input SAW 50 Ohm L1 1,2,3,5,6,7, 8,9,11,12 ______________________________________________________________________________________________________ VI TELEFILTER Potsdamer Straß 513 TELTOW / Germany Tel: (+49) 3328 4784-52 / 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 ...

Page 3

... Tfs285.doc ______________________________________________________________________________________________________ VI TELEFILTER ______________________________________________________________________________________________________ Stability Characteristics: After the following tests the filter shall meet the whole specification: 1. Shock: 500g, 18 ms, half sine wave, 3 shocks each plane; DIN IEC Vibration 500 Hz, 0, respectively, 1 octave per min, 10 cycles per plan, 3 plans; ...

Page 4

... Tfs285.doc ______________________________________________________________________________________________________ VI TELEFILTER ______________________________________________________________________________________________________ Air reflow temperature conditions 1st and 2nd air reflow profile Name: pre-heating periods Temperature: 150 ° 170 ° C Time: 60 sec sec. 260 240 220 200 180 160 140 120 100 Table for temperature vs. time during the air reflow process time / sec. temperature / ° ...

Page 5

... Tfs285.doc ______________________________________________________________________________________________________ VI TELEFILTER ______________________________________________________________________________________________________ History Version Reason of Changes 1.0 - development specification 2.0 - complete specification (tape&reel,terminating impedances matching, soldering profile, new date code added) - loss corrected from 10 according to Nortel Specification ______________________________________________________________________________________________________ VI TELEFILTER Potsdamer Straß 513 TELTOW / Germany Tel: (+49) 3328 4784-52 / Fax: (+49) 3328 4784-30 E-Mail: tft@telefilter ...

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