DESCRIPTION
NEC's MC-7831-HA is a GaAs Multi-Chip Module designed
for use as input stages in CATV applications up to 1 GH
cause this unit is a GaAs device, it has low distortion, low noise
figure, and low return loss across the entire frequency band.
Like the previous generation of products, these devices sur-
vive such hazards as surge and ESD as well as their silicon
competitors, but deliver superior performance with low DC
current required.
All devices are assembled and tested using fully automated
equipment to maximize consistency in part to part perfor-
mance, and reliability is assured by NEC's stringent quality
and process control procedures. These parts come in industry
compatible hybrid packages.
ELECTRICAL CHARACTERISTICS
FEATURES
• SPECIFIED FOR INCREASED BANDWIDTH TO 1 GHz
• GaAs ACTIVE DEVICES
• LOW DISTORTION
• HIGH LINEAR GAIN:
• LOW RETURN LOSS
• LOW GAIN CHANGE OVER TEMPERATURE
• SPECIFIED FOR 79, 110, and 132 CHANNELS
• HIGH RELIABILITY AND RUGGEDNESS:
Date Published January 2007
SYMBOLS
MC-7831-HA - GL = 18 dB MIN at f = 870 MHz
PERFORMANCE
Withstands environmental extremes as well as Silicon
devices (Surge, ESD, Etc.)
RL
RL
IDD
BW
Gf
Gf
NF
G
S
out
L
in
1
2
Frequency Range
Linear Gain
Gain Slope
Gain Flatness 1
Gain Flatness 2
Noise Figure 1
Noise Figure 2
Input Return Loss
Output Return Loss
Operating Current
NEC's 1 GHz GaAs CATV 18 dB PUSH-PULL AMPLIFIER
CHARACTERISTICS
PART NUMBER
(T
UNITS
A
MHz
mA
= 30±5 °C, V
dB
dB
dB
dB
dB
dB
dB
z
. Be-
-0.35
-0.35
18.0
20.0
19.0
17.5
16.0
10.0
20.0
19.0
17.5
16.0
12.0
MIN
180
0.2
50
DD
–
–
= 24 V, Z
14.85 MAX
OUTLINE DIMENSIONS
APPLICATIONS
• CATV HEADEND SYSTEMS
• CATV OPTICAL NODES
• CATV DISTRIBUTION AMPS
MC-7831-HA
4.19 ± 0.13
3.2 MAX
8.1 MAX
S
TYP
= Z
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
L
A
MC-7831-HA
= 75 Ω)
0.38.. A
19.05 ± 0.38
2.54 ± 0.25
1 2 3 5
27.5 MAX
45.08 MAX
38.1 ± 0.25
25.4 ± 0.25
PACKAGE OUTLINE H02
+0.35
+0.85
MAX
1000
21.0
240
1.0
6.5
7.0
–
–
–
–
–
–
–
–
–
–
7 8 9
f = 870 MHz
f = 40 to 870 MHz
40 to 870 MHz
40 to 1000 MHz
f = 50 MHz
f = 870 MHz
40 to 160MHz
160 to 320 MHz
320 to 640 MHz
640 to 870 MHz
870 to 1000 MHz
40 to 160MHz
160 to 320 MHz
320 to 640 MHz
640 to 870 MHz
870 to 1000 MHz
RF OFF
21.5 MAX
6-32 unc 2B
4.0 ± 0.25
(Units in mm)
4.25
6.3
TEST CONDITIONS
±
0.05
2.5
+ 0.25
- 0.35
(Continued on next page)
0.51 ± 0.050
In
1
2.54 ± 0.38
2 3 7 8
V
DD
5
Gnd
Out
9