Nxp Semiconductors CGD944C 用户手册
CGD944C_1
© NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 01 — 6 June 2007
3 of 7
NXP Semiconductors
CGD944C
870 MHz, 25 dB gain power doubler amplifier
5.
Characteristics
[1]
G
p
at 870 MHz minus G
p
at 40 MHz.
[2]
flatness straight line (peak to valley).
[3]
79 NTSC channels: 55.25 MHz to 547.25 MHz, 48 dBmV output level; + 53 NTSC channels 553.25 MHz to 997.25 MHz, 38 dBmV
output level.
output level.
[4]
V
o
= 48 dBmV
[5]
Direct Current (DC)
Table 5.
Characteristics
Bandwidth to 870 MHz; V
B
= 24 V (DC); T
mb
= 35
°
C; unless otherwise specified.
Symbol Parameter
Conditions
Min
Typ
Max
Unit
G
p
power gain
f = 870 MHz
24
25
26
dB
SL
sl
slope straight line
f = 40 MHz to 870 MHz
1
-
2
dB
FL
flatness of frequency response
f = 40 MHz to 870 MHz
-
0.5
-
dB
CTB
composite triple beat
79 + 53 flat NTSC channels
-
−
68
−
66
dB
98 flat PAL channels
-
−
66
-
dB
CSO
composite second-order distortion
79 + 53 flat NTSC channels
-
−
70
−
67
dB
98 flat PAL channels
-
−
66
-
dB
Xmod
cross modulation
79 + 53 flat NTSC channels
-
−
66
−
58
dB
RL
in
input return loss
f = 40 MHz to 80 MHz
20
-
-
dB
f = 80 MHz to 160 MHz
19
-
-
dB
f = 160 MHz to 320 MHz
18
-
-
dB
f = 320 MHz to 640 MHz
18
-
-
dB
f = 640 MHz to 870 MHz
18
-
-
dB
RL
out
output return loss
f = 40 MHz to 80 MHz
20
-
-
dB
f = 80 MHz to 160 MHz
19
-
-
dB
f = 160 MHz to 320 MHz
18
-
-
dB
f = 320 MHz to 640 MHz
18
-
-
dB
f = 640 MHz to 870 MHz
18
-
-
dB
NF
noise figure
f = 50 MHz
-
3.5
5.0
dB
f = 870 MHz
-
3.5
5.0
dB
I
tot
total current
V
B
= 24 V
-
450
-
mA