Philips Semiconductors
CATV amplifier modules
Product specification
BGD902; BGD902MI
handbook−,5h0alfpage
CTB
(dB)
−60
−70
(1)
(2)
(3)
(4)
MDA980
52
Vo
(dBmV)
(2)
(3)
48
(4)
(1)
44
handboo−k,5h0alfpage
Xmod
(dB)
−60
−70
MDA981
52
(1)
(2)
(3)
(4)
Vo
(dBmV)
48
(1)
44
−80
40
−80
40
−90
0
36
200
400
600
800 1000
f (MHz)
ZS = ZL = 75 Ω; VB = 24 V; 110 chs; tilt = 9 dB (50 to 550 MHz);
tilt = 3.5 dB at −6 dB offset (550 to 750 MHz).
(1) Vo.
(2) Typ. +3 σ.
(3) Typ.
(4) Typ. −3 σ.
Fig.2 Composite triple beat as function of
frequency under tilted conditions.
−90
0
36
200
400
600
800 1000
f (MHz)
ZS = ZL = 75 Ω; VB = 24 V; 110 chs; tilt = 9 dB (50 to 550 MHz);
tilt = 3.5 dB at −6 dB offset (550 to 750 MHz).
(1) Vo.
(2) Typ. +3 σ.
(3) Typ.
(4) Typ. −3 σ.
Fig.3 Cross modulation as function of frequency
under tilted conditions.
handbook−,5h0alfpage
CSO
(dB)
−60
−70
−80
(1)
(2)
(3)
(4)
MDA982
52
Vo
(dBmV)
(2)
48
(1)
(3)
(4)
44
40
−90
0
36
200
400
600
800 1000
f (MHz)
ZS = ZL = 75 Ω; VB = 24 V; 110 chs; tilt = 9 dB (50 to 550 MHz);
tilt = 3.5 dB at −6 dB offset (550 to 750 MHz).
(1) Vo.
(2) Typ. +3 σ.
(3) Typ.
(4) Typ. −3 σ.
Fig.4 Composite second order distortion as
function of frequency under tilted conditions.
1999 Mar 29
5