Filename: tfs 398l.doc

Version 1.2

10.01.2008

Filter specification

TFS 398L

1/5

Tele Filter GmbH

Potsdamer Straße 18

D 14 513 TELTOW / Germany

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

E-Mail:

tft@vectron.com

Measurement condition

Ambient temperature:

23

°C

Input power level:

0

dBm

Terminating impedance: *

Input:

810 Ω || -4,5 pF

Output:

810 Ω || -4,3 pF

Characteristics

Remark:

The reference level for the relative attenuation arel of the TFS 398L is the minimum of the pass band attenuation. This value is defined as the insertion loss

ae. The nominal frequency fN is fixed at 398 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 =amin

11,8

dB

max.

12,5

dB

(reference level)

Nominal frequency

-

398,0

MHz

Passband

PB

-

±

5,0

MHz

Pass band ripple

p-p

0,3

dB

max.

1,0

dB

Relative attenuation

arel

5

MHz

0,5

dB

max.

1

dB

10

13

MHz

39

dB

min.

35

dB

13

50

MHz

45

dB

min.

40

dB

Group delay ripple within PB

25

ns

max.

60

ns

Operating temperature range

OTR

-

- 40 °C ... + 85°C

Storage temperature range

-

- 40 °C ... + 85°C

Temperature coefficient of frequency

TCf **

-19

ppm/K

-

*) The terminating impedances depend on parasites 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:

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.