Filename: tfs 281.doc

Version 2.2

24.06.2010

Vectron International

Filter specification

TFS 281

1/5

Vectron International GmbH & Co. KG

Potsdamer Straße 18

D 14 513 TELTOW / Germany

Tel: (+49) 3328 4784-0 / Fax: (+49) 3328 4784-30

Vectron International GmbH & Co. KG reserves the right to make changes to the product(s) and/or information contained herein without

Measurement condition

Ambient temperature:

23

°C

Input power level:

0

dBm

Terminating impedance: *

Input:

183 Ω || -12.5 pF

Output:

172 Ω || -12.6 pF

Characteristics

Remark:

The reference level for the relative attenuation arel of the TFS281 is the minimum of the pass band attenuation. This value is defined as the insertion loss

ae. The nominal frequency fN is fixed at 281,6 MHz without any tolerance. The values of relative attenuation arel are guaranteed for the whole operating

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

ae

9

dB

max.

12,0

dB

(reference level)

Nominal frequency

281,6

MHz

Passband

PB

47,2

MHz

±

20,0

MHz

Pass band ripple

p-p

0,4

max.

1

dB

Relative attenuation

arel

20

MHz

0,4

dB

max.

1

dB

10

40

MHz

47

dB

min.

40

dB

40

31,2 MHz

41

dB

min.

37

dB

40

31,2 MHz

43

dB

min.

37

dB

40

220

MHz

43

dB

min.

40

dB

Group delay ripple within PB

35

ns

max.

75

ns

Return loss within PB

14

dB

min.

10

dB

Input power level

-

max.

15

dBm

Operating temperature range

OTR

-

- 40 °C ... + 85 °C

Storage temperature range

-

- 40 °C ... + 85 °C

Temperature coefficient of frequency

TCf ***

-95

ppm/K

-

*) 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:

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.