Tfs282a.doc

version 1.5

12.02.2001

Filter Specification

TFS 282 A

1/5

VI TELEFILTER

Vectron International, Inc.

Potsdamer Straße 18

267 Lowell Road

D 14 513 TELTOW / Germany

Hudson, NH 03051 / USA

Tel: (+49) 3328 4784-0 / 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

for input:

420

Ω // - 1,3 pF

for output: 420

Ω // - 1,3 pF

External coil:

89 nH

Characteristics

Remark:

Reference level for the relative attenuation arel of the TFS 282 A 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 on 282 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 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 = amin

3,7

dB

max

5

dB

(Reference level)

_________________________________________________________________________________________________________

Nominal frequency

fN

-

282,000 MHz

_________________________________________________________________________________________________________

Pass band ripple

282,0 MHz ± 65

kHz

-

max

1,5

dB

_________________________________________________________________________________________________________

Relative attenuation

arel

282,0 MHz ± 90

kHz

1,5

dB

max

3

dB

282,0 MHz ± 400

kHz ... 282,0 MHz ± 600

kHz

30

dB

min

25

dB

282,0 MHz ± 600

kHz ... 282,0 MHz ± 800

MHz

45

dB

min

40

dB

282,0 MHz + 800

kHz ... 282,0 MHz +

1,4 MHz

60

dB

min

50

dB

282,0 MHz +

1,4 kHz ... 282,0 MHz +

3,0 MHz

55

dB

min

45

dB

282,0 MHz +

3,0 MHz ... 282,0 MHz + 30,0 MHz

60

dB

min

50

dB

282,0 MHz - 800

kHz ... 282,0 MHz - 30,0 MHz

60

dB

min

50

dB

_________________________________________________________________________________________________________

Group delay distortion

GDD

282,0 MHz ± 100

kHz

0,7

µs

max

2,0

µs

_________________________________________________________________________________________________________

Input power

max

0

dBm

DC voltage

max

5

V

_________________________________________________________________________________________________________

Operating temperature range

- 20

°C ... + 70 °C

Storage temperature range

- 30

°C ... + 85 °C

Temperature coefficient of frequency

TCf

- 0,036 ppm/K²

-

Frequency inversion temperature

+ 25

°C

_________________________________________________________________________________________________________

Generated:

Checked / approved: