Filename: tfs 115d.doc

Version 1.1

03.02.2006

Filter specification

TFS 115D

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

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:

20

°C

Input power level:

0

dBm

Terminating impedance: *

Input:

313 Ω || -24 pF

Output:

268 Ω || -29 pF

Characteristics

Remark:

The reference level for the relative attenuation arel of the TFS 115D 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 1 dB

filter attenuation level relative to the insertion loss ae. The nominal frequency fN is fixed at 115,2 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

6

dB

max.

10

dB

(reference level)

Nominal frequency

115,2

MHz

Passband

PB

±

1,92 MHz

Pass band ripple

p-p

0,3

dB

max.

1

dB

Relative attenuation

arel

1,92

MHz

2,5

dB

max.

3

dB

4,2

7,5

MHz

35

dB

min.

25

dB

7,5

12,5

MHz

48

dB

min.

35

dB

12,5

25

MHz

60

dB

min.

38

dB

Absolute Group delay

in PB

p-p

0,75

µs

max.

0,85 µs

Group delay ripple

in PB

p-p

100

ns

max.

150

ns

Input power level **

max.

10

dBm

Operating temperature range

OTR

-10 °C..... +85 °C

Storage temperature range

-40 °C..... +85 °C

Temperature coefficient of frequency

TCf ***

-22

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.

**) Maximum value for 10 years operation.

***)

Generated:

Checked / Approved: