MC-7834-KC
NEC's 870 MHz GaAs CATV 20 dB PUSH-PULL AMPLIFIER
FEATURES
OUTLINE DIMENSIONS (Units in mm)
• GaAs ACTIVE DEVICES
• LOW DISTORTION
PACKAGE OUTLINE H02
45.08 MAX
• HIGH LINEAR GAIN:
38.1 0.25
27.5 MAX
MC-7834-KC - GL = 21 dB MIN at f = 870 MHz
+ 0.25
4.25
- 0.35
3.2 MAX
• LOW RETURN LOSS
VDD
• LOW GAIN CHANGE OVER TEMPERATURE
14.85 MAX
5
4.0 0.25
• SPECIFIED FOR 79, 110, and 132 CHANNELS
8.1 MAX
1
9
PERFORMANCE
19.05 0.38
In
Out
• HIGH RELIABILITY AND RUGGEDNESS:
Withstands environmental extremes as well as Silicon
devices (Surge, ESD, Etc.)
6-32 unc 2B
21.5 MAX
25.4 0.25
2.54 0.25
2
3 7 8
Gnd
0.51 0.050
1
2
3
5
7 8 9
DESCRIPTION
10.75 0.25
NEC's MC-7834-KC is a GaAs Multi-Chip Module designed
for use as input stages in CATV applications up to 870 MHz.
Because this unit is a GaAs device, it has low distortion, low
noise figure, and low return loss across the entire frequency
band. The MC-7834-KC is similar to NEC's standard push-pull
devices, but with the higher current allows better distortion
performance, especially X-Mod.
2.54 0.38
4.19 0.13
A
6.3
2.5
0.38.. A
0.05
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.
APPLICATIONS
• CATV HEADEND SYSTEMS
• CATV OPTICAL NODES
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.
• CATV DISTRIBUTION AMPS
ELECTRICAL CHARACTERISTICS (TA = 30±5 °C, VDD = 24 V, ZS = ZL = 75 Ω)
PART NUMBER
MC-7834-KC
TEST CONDITIONS
SYMBOLS
CHARACTERISTICS
UNITS
MHz
dB
MIN
50
TYP
–
MAX
870
21.0
1.0
0.7
6.5
7.0
–
BW
GL
S
Frequency Range
Linear Gain
20.0
0.2
–
–
f = 870 MHz
f = 40 to 870 MHz
Gain Slope
dB
–
Gf
Gain Flatness
Noise Figure 1
Noise Figure 2
Input/Output Return Loss
dB
–
40 to 870 MHz; Peak to Valley
f = 50 MHz
dB
–
–
NF
–
–
f = 870 MHz
RL
dB
20.0
19.0
17.5
16.0
180
–
–
40 to 160MHz
–
–
160 to 320 MHz
320 to 640 MHz
640 to 870 MHz
RF OFF
–
–
–
–
IDD
CTB
Operating Current
mA
dBc
dBc
dBc
–
325
-59
-52
-59
Composite Triple Beat
Cross Modulation
–
f = 40 to 870 MHz; 110 Channels,
V
OUT = 44 dBmV, Flat
XMod
CSO
–
–
Composite Second Order
–
–
Date Published January 2007