tfs471.doc

version 1.1

06.01.02

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VI TELEFILTER

Filter Specification

TFS 471

1/3

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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 impedance:

310

Ω || -1,1 pF

Construction and pin connection

see page 2

50

Ω

Ω

Ω

Ω test circuit

see page 2

Characteristics

Remark:

Reference level for the relative attenuation arel of the TFS 471 is the maximum of the pass band attenuation amax. The maximum of the attenuation

within the usable signal bandwidth is defined as the insertion loss ae. The centre frequency fo is the arithmetic mean value of the upper and lower

frequencies at the 3dB filter attenuation level relative to the insertion loss ae. The nominal frequency fN is fixed on 471,55 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

Variation/ Limitation

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Insertion loss

ae = amax

3,5

dB

max.

5

dB

(Reference level)

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Nominal frequency

-

471,55 MHz

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Centre frequency

471,55 MHz

-

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3 dB - bandwidth

BW

280

kHz

-

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Usable signal bandwidth

± 10 kHz

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Relative attenuation

arel

min.

52

dB

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Temperature coefficient of frequency

-0,036 ppm/K

2

-

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Frequency inversion temperature

+ 25 °C

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Operating temperature range

- 20°C ... + 70°C

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Generated:

Checked / approved: