Filename: tfs 70bx.doc

Version 2.0

22.08.2012

Vectron International

Filter specification

TFS 70BX

1/5

Vectron International GmbH

Potsdamer Straße 18

D 14 513 TELTOW / Germany

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

Vectron International 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.

Measurement condition

Ambient temperature:

25

°C

Input power level:

0

dBm

Terminating impedance: *

Input:

87

|| -41 pF

Output:

104

|| -33 pF.

Characteristics

Remark:

The reference level for the relative attenuation arel of the TFS70BX is the minimum of the pass band attenuation. This value is defined as the insertion loss

ae. The nominal frequency fN is fixed at 70 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

15,9

dB

max.

22

dB

(reference level)

Nominal frequency

70

MHz

Passband

PB

f

N

±

12,5

MHz

Pass variation

p-p

0,4

dB

max.

0,8

dB

Bandwidth

BW

1

dB

28

MHz

min.

25,8

MHz

3

dB

29

MHz

min.

27

MHz

40

dB

34

MHz

max.

37,5

MHz

Relative attenuation

arel

12,5

MHz

0,3

dB

max.

1

dB

60

20

MHz

43

dB

min.

40

dB

20

35

MHz

43

dB

min.

40

dB

Group delay ripple**

p-p

15

ns

max.

100

ns

Absolute delay

0,74

µs

Phase ripple**

p-p

5

deg

max.

8,3

deg

Operating temperature range

OTR

- 40 °C ... + 85 °C

Storage temperature range

- 40 °C ... + 85 °C

Temperature coefficient of frequency

TCf ***

-90

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.

**) 90% of 3dB bandwidth

Generated:

Checked / Approved: