Philips Semiconductors
CATV amplifier module
Product specification
BGD712
handbook−,5h0alfpage
CTB
(dB)
−60
−70
−80
MCD842
56
Vo
(dBmV)
(1)
52
handbook−,5h0alfpage
Xmod
(dB)
−60
48
−70
(2)
(3)
(4) 44
−80
MCD843
56
Vo
(dBmV)
(1)
52
(2)
(3)
(4)
48
44
−90
0
40
200
400
600
800
f (MHz)
ZS = ZL = 75 Ω; VB = 24 V; 79 channels;
tilt = 7.3 dB (50 to 550 MHz).
(1) Vo.
(2) Typ. +3 σ.
(3) Typ.
(4) Typ. −3 σ.
Fig.2 Composite triple beat as a function of
frequency under tilted conditions.
−90
0
40
200
400
600
800
f (MHz)
ZS = ZL = 75 Ω; VB = 24 V; 79 channels;
tilt = 7.3 dB (50 to 550 MHz).
(1) Vo.
(2) Typ. +3 σ.
(3) Typ.
(4) Typ. −3 σ.
Fig.3 Cross modulation as a function of
frequency under tilted conditions.
handbook−,5h0alfpage
CSO
(dB)
−60
MCD844
56
Vo
(dBmV)
(1)
52
(2)
−70
48
(3)
−80
44
−90
0
(4)
40
200
400
600
800
f (MHz)
ZS = ZL = 75 Ω; VB = 24 V; 79 channels;
tilt = 7.3 dB (50 to 550 MHz).
(1) Vo.
(2) Typ. +3 σ.
(3) Typ.
(4) Typ. −3 σ.
Fig.4 Composite second order distortion as a
function of frequency under tilted conditions.
2000 Jan 13
5