TFS70H314 Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter specification

File name: Tfs70H314.doc
VI TELEFILTER
Filter specification
Version 1.0
24.05.2002
TFS 70H314
1/5
1. Measurement condition :
Ambient temperature T_A:
Input power level:
Terminating impedances in fc *) :
25 °C.
0 dBm.
for input:
for output:
258 Ω  -15,6 pF.
50 Ω  0 pF.
2. Characteristics :
Remark: Reference level for the relative attenuation arel of the TFS 70H314 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 reference frequency fc is the arithmetic mean value of
the upper and lower frequencies at the 20 dB filter attenuation level relative to the insertion loss ae. The temperature coefficient of frequency
Tc_f is valid both for the reference frequency fc and the frequency response of the filter in the operating temperature range. The frequency
shift of the filter in the operating temperature range is not included in the production tolerance scheme.
Data
typ. value
tolerance / limit
Insertion loss (Reference level)
ae
Centre frequency at ambient temperature (f_CTA) fc
25,5 dB
70,0 MHz
max. 27
70,0 ± 0,1
dB
MHz
Pass band :
PB
Amplitude ripple in : fc ... fc ± 9 MHz
Bandwidth at ambient temperature T_A:
BW
1 dB
3 dB
10 dB
20 dB
40 dB
50 dB
0,4 dB
19,66
20,88
22,50
23,72
25,23
25,80
MHz
MHz
MHz
MHz
MHz
MHz
fc ... fc ± 10 MHz
max.
0,7 dB
min. 19,3 MHz
min. 20,0 MHz
max. 25,4 MHz
Relative attenuation :
arel
fc ... fc ± 9,65 MHz
fc ± 9,65 MHz ... fc ± 10 MHz
fc ± 12,7 MHz ... fc ± 17 MHz
fc ± 17 MHz ... fc ± 60 MHz
Group delay ( mean value in PB ):
Group delay ripple in PB (p-p):
Deviation from linear phase in PB :
-
-
52
dB
55
dB
1,18 µs
20
ns
2,5°
max.
max.
min.
min.
1 dB
3 dB
40 dB
47 dB
max.
max.
35 ns
4°
Triple transit attenuation compared to main signal
Crosstalk
55
dB
65
dB
Temperature coefficient of frequency ( Tc_f ) :
Frequency deviation of fc over temperature :
Operating temperature range
Storage temperature range
- 75
ppm/K
∆fc(Hz) = Tc_f(ppm/K) x (T - T_o) x f_CTA (MHz)
- 25 °C ... + 80 °C
- 40 °C ... + 85 °C
*) 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:
W. Dunzow
Dr. Bert Wall
VI TELEFILTER
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: [phone] / Fax: [phone]
Vectron International, Inc.
267 Lowell Road
Hudson, NH 03051 / USA
Tel: [phone] Fax: [phone]
E-Mail: [e-mail]
E-Mail: [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