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1997 Apr 10 4
Philips Semiconductors Product specification
CATV amplifier module BGY685AL
Table 2 Bandwidth 40 to 550 MHz; T
case
=30°C; Z
S
=Z
L
=75Ω
Notes
1. f
p
= 55.25 MHz; V
p
= 44 dBmV;
f
q
= 493.25 MHz; V
q
= 44 dBmV;
measured at f
p
+f
q
= 548.5 MHz.
2. f
p
= 540.25 MHz; V
p
=V
o
;
f
q
= 547.25 MHz; V
q
=V
o
−6 dB;
f
r
= 549.25 MHz; V
r
=V
o
−6 dB;
measured at f
p
+f
q
−f
r
= 538.25 MHz.
3. The module normally operates at V
B
= +24 V, but is able to withstand supply transients up to +30 V.
SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT
G
p
power gain f = 50 MHz 18 19 dB
f = 550 MHz 18.5 − dB
SL slope cable equivalent f = 40 to 550 MHz 0.5 2 dB
FL flatness of frequency response f = 40 to 550 MHz −±0.3 dB
S
11
input return losses f = 40 to 80 MHz 20 − dB
f = 80 to 160 MHz 19 − dB
f = 160 to 550 MHz 18 − dB
S
22
output return losses f = 40 to 80 MHz 20 − dB
f = 80 to 160 MHz 19 − dB
f = 160 to 550 MHz 18 − dB
CTB composite triple beat 77 channels flat; V
o
= 44 dBmV;
measured at 547.25 MHz
−−58 dB
X
mod
cross modulation 77 channels flat; V
o
= 44 dBmV;
measured at 55.25 MHz
−−56 dB
CSO composite second order
distortion
77 channels flat; V
o
= 44 dBmV;
measured at 548.5 MHz
−−58 dB
d
2
second order distortion note 1 −−72 dB
V
o
output voltage d
im
= −60 dB; note 2 61.5 − dBmV
F noise figure f = 550 MHz − 4.5 dB
I
tot
total current consumption DC value; V
B
= +24 V; note 3 − 250 mA