Filename: tfs 434a.doc

Version 1.2

25.08.2006

Filter specification

TFS 434A

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@telefilter.com

Measurement condition

Ambient temperature:

23

°C

Input power level:

0

dBm

Terminating impedance: *

Input:

430 Ω || -4,7 pF

Output:

430 Ω || -4,6 pF

Characteristics

Remark:

The reference level for the relative attenuation arel of the TFS 434A is the minimum of the pass band attenuation. This value is defined as the insertion

loss ae. The nominal frequency fN is fixed at 434,0 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

8,0

dB

max.

10,0

dB

(reference level)

Nominal frequency

-

434,0

MHz

Passband

PB

-

f

MHz

Pass band ripple

p-p

0,2

dB

max.

0,5

dB

Relative attenuation

arel

f

N

… f

N

±

2,5

MHz

0,25

dB

max.

0,5

dB

f

N

-

433,7

MHz … f

N

-

34

MHz

45

dB

min.

40

dB

f

N

-

34

MHz … f

N

-

10

MHz

40

dB

min.

20

dB

f

N

+

21

MHz … f

N

+

31

MHz

40

dB

min.

30

dB

f

N

+

31

MHz … f

N

+

366

MHz

46

dB

min.

40

dB

Group delay ripple within PB

18

ns

max.

30

ns

Return loss

15

dB

min.

10

dB

Operating temperature range

OTR

-

- 40 °C ... + 85°C

Storage temperature range

-

- 45 °C ... + 85°C

Temperature coefficient of frequency

TCf **

18

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:

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.