Filename: tfs 112r.doc

Version 1.1

18.05.2006

Filter specification

TFS 112R

1/5

Tele Filter GmbH

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:

0

dBm

Terminating impedance: *

Input:

600 Ω || -0,35 pF

Output:

600 Ω || -0,35 pF

Source impedance:

100

Ω

Load impedance:

100

Ω

Characteristics

Remark:

The reference level for the relative attenuation arel of the TFS 112R 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 112,0 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

4,0

dB

max.

5,0

dB

(reference level)

Nominal frequency

-

112,0

MHz

Centre frequency

112,0

MHz

-

Passband

PB

-

± 5,0

kHz

Pass band ripple (p-p)

0,2

dB

max.

1,5

dB

Relative attenuation

arel

5

kHz

0,6

dB

max.

1,5

dB

10

kHz

1,0

dB

max.

3

dB

120

kHz

60

kHz

33

dB

min.

25

dB

60

kHz

120

kHz

33

dB

min.

25

dB

Input power level

-

max.

10

dBm

Operating temperature range

OTR

-

0 °C ... + 50 °C

Storage temperature range

-

-40 °C ... + 85 °C

Frequency inversion temperature

40

°C

-

Temperature coefficient of frequency

TCf **

-0,035

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.

**)

Generated:

Checked / Approved: