Filename: tfs 480d.doc

Version 1.1

07.05.2008

Vectron International

Filter specification

TFS 480D

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

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.

Measurement condition

Ambient temperature:

23

°C

Input power level:

10

dBm

Terminating impedance: *

Input:

700

|| -0,92 pF

Output:

700

|| -0,92 pF

External Coil:

59 nH

Characteristics

Remark:

The reference level for the relative attenuation arel of the TFS 480D 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 480 MHz without any tolerance. The given values for both the relative

attenuation arel and the group delay ripple have to be achieved 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

4,4

dB

max.

6,5

dB

(reference level)

Nominal frequency

-

480,0

MHz

Centre frequency

480,0

MHz

-

Passband

PB

-

±

88,0 kHz

Bandwidth

BW

3

dB

442

kHz

-

Relative attenuation

arel

100,0

91,4

MHz

57

dB

min.

45

dB

91,4

16,0

MHz

43

dB

min.

31

dB

16,0

2,5

MHz

54

dB

min.

45

dB

2,5

1,6

MHz

50

dB

min.

37

dB

1,2

1,6

MHz

43

dB

min.

32

dB

1,6

2,1

MHz

47

dB

min.

35

dB

2,1

3,4

MHz

45

dB

min.

37

dB

3,4

6,8

MHz

53

dB

min.

42

dB

6,8

100,0

MHz

62

dB

min.

51

dB

Group delay ripple within PB

0,4

µs

max.

2

µs

Operating temperature range

OTR

-

- 20 °C ... + 70°C

Storage temperature range

-

- 30 °C ... + 80°C

Frequency inversion temperature

50

°C

-

Temperature coefficient of frequency

TCf **

-0,03

ppm/K

2

-

*) 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.

**) ∆f(Hz) = TCf(ppm/K

Generated:

Checked / Approved: