Tfs430b.doc

version 1.2

26.11.2002

Filter Specification

TFS 430B

1/5

VI TELEFILTER

Potsdamer Stra

ße 18

D 14 513 TELTOW / Germany

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

E-Mail:

tft@telefilter.com

Measurement condition

23

°C

Input power level:

0

dBm.

Terminating Impedance at fc*:

for input:

240

6,7 pF

for output:

210

7,7 pF

Characteristics

Remark:

Reference level for the relative attenuation arel of the TFS 430B is the minimum of the pass band attenuation amin. The minimum of the pass

band attenuation amin is defined as the insertion loss ae. The centre frequency fc is the arithmetic mean value of the upper and lower frequencies

at the 3 dB filter attenuation level relative to the insertion loss ae. The nominal frequency fN is fixed at 430 MHz without tolerance. The given

values for the relative attenuation arel and for the group delay ripple have to be reached at the frequencies given below even if the centre

frequency fc is shifted due to the temperature coefficient of frequency TCf in the operating temperature range and due to a production tolerance

for the centre frequency fc.

D a t a

typ. value

tolerance / limit

Insertion loss

ae = amin

9,2

dB

max.

10

dB

(Reference level)

Nominal frequency

fN

-

430

MHz

Centre frequency

fc

430

MHz

Relative attenuation

arel

fN

…fN ±

2

MHz

-

max.

1

dB

fN ± 2

MHz

…fN ±

3,325 MHz

-

max.

1,5

dB

fN ± 9

MHz

…fN ± 50

MHz

37

dB

min.

30

dB

fN ± 50

MHz

…fN ± 100

MHz

45

dB

min.

40

dB

Phase Linearity

fN ±

2

MHz

0,7

°rms

max.3

°rms

Operating temperature range

-

- 30 C ... + 70 C

Storage temperature range

-

- 35 C

… + 85 C

Temperature coefficient of frequency

TC

- 19

ppm/K

Frequency inversion temperature

+ 25

C

*) 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.