tfs246h4 Vectron International, Inc., tfs246h4 Datasheet

tfs246h4

Manufacturer Part Number

tfs246h4

Description

Vi Telefilter Filter

Manufacturer

Vectron International, Inc.

Datasheet

1.TFS246H4.pdf (5 pages)

Current page: 1 of 5
Download datasheet (112Kb)

Filename: tfs246h4.doc

Measurement condition

Ambient temperature:

Input power level:

Terminating impedances *)

External coil:

Characteristics

Remark:

Reference level for the relative attenuation a rel of the TFS246H4 is the minimum of the pass band attenuation a min . The minimum of the pass

band attenuation a min is defined as the insertion loss a e . The centre frequency f c is the arithmetic mean value of the upper and lower frequencies

at the 3 dB filter attenuation level relative to the insertion loss a e . The nominal frequency f N is fixed at 246 MHz without any tolerance. The given

values for the relative attenuation a rel and for the group delay ripple have to be reached at the frequencies given below even if the centre

frequency f c is shifted due to the temperature coefficient of frequency TC f in the operating temperature range and due to a production tolerance

for the centre frequency f c .

D a t a

Insertion loss

(Reference level)

Nominal frequency

Pass band ripple

f N - 85 kHz ... f N + 93 kHz

Relative attenuation

f N

f N ±

Group delay distortion

f N ±

Operating temperature range

Storage temperature range

Temperature coefficient of frequency

Frequency inversion temperature T

**)

Generated:

Checked / approved:

VI TELEFILTER

Potsdamer Straße 18

D 14 513 TELTOW / Germany

Tel: (+49) 3328 4784-0 / Fax: (+49) 3328 4784-30

E-Mail:

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.

*) 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.

TELEFILTER

f(Hz) = TC f (ppm/

tft@telefilter.com

330

400

600

800

100

1,6 MHz ... f N ±

3,0 MHz ... f N ±

Input:

Output:

kHz ... f N ± 400

kHz ... f N ± 600

kHz ... f N ± 800

kHz ... f N ±

MHz ... f N ± 100

kHz

K²

) x (T-T

f N ± 120

490

270 nH

a e = a min

f N

a rel

GDD

0 dBm

)² x f To (MHz)

1,6 MHz

3,0 MHz

|| -2.62 pF

kHz

MHz

TC f

**)

Filter Specification

version 1.3

47...55

52...55

55...70

+ 25

- 0,036 ppm/K²

typ. value

2,5

0,5

1,5

0,5

0,8

1,2

µs

°C

Vectron International, Inc.

267 Lowell Road

Hudson, NH 03051 / USA

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

E-Mail:

vti@vtinh.com

TFS 246 H4

tolerance / limit

max

min 18

min 25

min 46

max

min 40

min 45

- 25 C ... + 85 C

- 30 C ... + 85 C

246,000 MHz

1,5

1,2

1,5

2,5

16.05.2002

1/5

Related parts for tfs246h4

tfs246h4 Summary of contents

Page 1

... Remark: Reference level for the relative attenuation a rel of the TFS246H4 is the minimum of the pass band attenuation a min . The minimum of the pass band attenuation a min is defined as the insertion loss The centre frequency the arithmetic mean value of the upper and lower frequencies at the 3 dB filter attenuation level relative to the insertion loss a e ...

Page 2

... Filename: tfs246h4.doc VI TELEFILTER Construction and pin configuration (All dimensions in mm) S 246 H4 P16 2,54+-0 ...

Page 3

... Filename: tfs246h4.doc VI TELEFILTER Stability characteristics After the following tests the filter shall meet the whole specification: 1. Shock: 500g, 18 ms, half sine wave, 3 shocks each plane; DIN IEC Vibration 500 Hz, 0, respectively, 1 octave per min, 10 cycles per plan, 3 plans; ...

Page 4

... Filename: tfs246h4.doc VI TELEFILTER Air reflow temperature conditions 1st and 2nd air reflow profile Name: pre-heating periods Temperature: 150 °C - 170 °C Time: 60 sec sec. 260 240 220 200 180 160 140 120 100 Table for temperature vs. time during the air reflow process time / sec. temperature / ° ...

Page 5

... Filename: tfs246h4.doc VI TELEFILTER History Version Reason of Changes 1.0 Generate specification according to customer’s requirements 1.1 Add and correct typical data. Correct value for coupling coil. 1.2 Change operating temperature range from –20°C ... 85°C to –25°C ... 85°C 1.3 Correct typo for first selection value (from dB) VI TELEFILTER Potsdamer Straß ...

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