tfs244b.eng

version 1.1

06.01.02

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VI TELEFILTER

Filter specification

TFS244 B

1/4

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VI TELEFILTER

Vectron International, Inc.

Potsdamer Straße 18

267 Lowell Road

D 14 513 TELTOW / Germany

Hudson, NH 03051 / USA

Tel: (+49) 3328 4784-52 / Fax: (+49) 3328 4784-30

Tel: (603) 598-0070 Fax: (603) 598-0075

E-Mail: tft@telefilter.com

E-Mail: vti@vtinh.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:

23 C

Input power level:

0 dBm

terminating impedances:

t.b.d, near 500 Ohm

Construction and pin connection

see page 2

Characteristics

Remark:

Reference level for the relative attenuation arel of the TFS 244 B 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 fo 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 on 244 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 also if the centre frequency fo 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 fo.

D a t a

typ. value

limit

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Insertion loss

ae = amin

3.5

dB

max 5

dB

(Reference level)

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Norminal frequency

fN

244

MHz

-

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In band ripple

-

1,0 dB

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Relative attenuation

arel

244,0 MHz ± 80

kHz

max 3

dB

244,0 MHz ± 400

kHz ... 244,0 MHz ± 600

kHz

min 25

dB

244,0 MHz ± 600

kHz ... 244,0 MHz ± 800

kHz

min 40

dB

244,0 MHz ± 800

kHz ... 244,0 MHz ±

1,6 MHz

min 45

dB

244,0 MHz ±

1,6 MHz ... 244,0 MHz ± 10

MHz

min 50

dB

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Group delay distortion

GDD

244,0 MHz ± 80

kHz

1

µs

max 1,5

µ s

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Operating temperature range

- 20 C ... + 85 C

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Temperature coefficient of frequency

TC

ca. - 0,036

ppm/K²

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Frequency inversion temperature

+ 20 ... + 30 C

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generated:

checked / approved: