Filename: tfs 140as.doc

Version 1.5

21.12.2006

Filter specification

TFS 140AS

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:

25

°C

Input power level:

0

dBm

Terminating impedance: *

Input:

230 Ω || -12 pF

Output:

170 Ω || -15 pF

Characteristics

Remark:

The reference level for the relative attenuation arel of the TFS 140AS 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 20 dB

filter attenuation level relative to the insertion loss ae. The nominal frequency fN is fixed at 140,0 MHz without any tolerance. The shift of the filter band

width in the operating temperature range (OTR) is included in the production tolerance scheme.

D a t a

typ. value

tolerance / limit

Insertion loss

ae

12,1

dB

max.

13,5

dB

(reference level)

Nominal frequency

-

140,0

MHz

Centre frequency

140,0

MHz

±

0,4

MHz

Passband

PB

-

±

10

MHz

Pass band ripple

0,3

dB

max.

1

dB

Pass band variation

1

dB

max.

1,5

dB

Bandwidth

BW

1

dB

23,8

MHz

min.

19,12 MHz

1,5

dB

24,4

MHz

min.

20

MHz

Relative attenuation

arel

±

9,56

MHz

0,3

dB

max.

1

dB

±

9,56

±

10

MHz

0,4

dB

max.

1,5

dB

130,0

17,2

MHz

45

dB

min.

42

dB

17,2

360,0

MHz

43

dB

min.

40

dB

Group delay ripple within PB

p-p

55

ns

max.

70

ns

Absolute group delay within PB

600

ns

max

825

ns

Phase linearity within PB

p-p

7

deg

max.

10

deg

Input power level

-

max.

10

dBm

Operable temperature range

-

- 40 °C ... + 85°C

Operating temperature range

OTR

-

+25 °C

Storage temperature range

-

- 45 °C ... + 85°C

Temperature coefficient of frequency

TCf **

-94

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.