MC-7847 View Datasheet(PDF) - NEC => Renesas Technology
Part Name
Description
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MC-7847 Datasheet PDF : 2 Pages
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NEC's 870 MHz GaAs CATV
MC-7845
MC-7846
POWER DOUBLER AMPLIFIER MC-7847
FEATURES
• GaAs ACTIVE DEVICES
• LOW DISTORTION
• HIGH LINEAR GAIN:
MC-7845 - GL = 18 dB MIN at f = 870 MHz
MC-7846 - GL = 22 dB MIN at f = 870 MHz
MC-7847 - GL = 25 dB MIN at f = 870 MHz
• LOW RETURN LOSS
• LOW GAIN CHANGE OVER TEMPERATURE
• SPECIFIED FOR 79, 110, and 132 CHANNELS
PERFORMANCE
• HIGH RELIABILITY AND RUGGEDNESS:
Withstands environmental extremes as well as Silicon
devices (Surge, ESD, Etc.)
DESCRIPTION
NEC's MC-7845, MC-7846, and MC-7847 are GaAs Multi-
Chip Modules designed for use as output stages in CATV ap-
plications up to 870 MHz. The only difference between these
devices is gain, which is 18 dB, 22 dB, and 25 dB respec-
tively. Because these units are GaAs devices they have 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 performance, and reliability is assured by NEC's strin-
gent quality and process control procedures. These parts come
in industry compatible hybrid packages.
OUTLINE DIMENSIONS (Units in mm)
PACKAGE OUTLINE H02
3.2 MAX
14.85 MAX
8.1 MAX
45.08 MAX
38.1±0.25
27.5 MAX
19.05±0.38
25.4±0.25
2.54±0.25
12 3 5 789
4.25
+
-
0.25
0.35
4.0±0.25
6-32 unc 2B
21.5 MAX
4.19±0.13 A
0.38.. A
0.51±0.05
6.3 2.5
±0.05
VDD
5
1
9
In
Out
2 378
0.51±0.05
Gnd
10.75 ±0.25
2.54 ±0.38
APPLICATIONS
• CATV HEADEND SYSTEMS
• CATV OPTICAL NODES
• CATV DISTRIBUTION AMPS
ELECTRICAL CHARACTERISTICS (TA = 30±5 °C, VDD = 24 V, ZS = ZL = 75 Ω)
PART NUMBER
MC-7845
MC-7846
MC-7847
SYMBOLS CHARACTERISTICS
UNITS MIN TYP MAX MIN TYP MAX MIN TYP MAX
BW
Frequency Range
MHz 50 – 870 50 – 870 50 – 870
GL
Linear Gain
dB 18.0 – 19.0 22.0 – 23.0 25.0 – 26.0
S
Gain Slope
dB 0.2 0.6 1.0 0.6 1.0 1.4 1.0 1.4 1.8
Gf
Gain Flatness
dB
– – 0.6 – – 0.6 – – 0.6
NF
Noise Figure 1
Noise Figure 2
RLi
Input Return Loss
RLo
Output Return Loss
dB
– – 6.5 – – 6.0 – – 5.5
– – 7.0 – – 6.5 – – 6.0
dB 20.0 – – 20.0 – – 20.0 – –
19.0 – – 20.0 – – 20.0 – –
17.5 – – 19.0 – – 19.0 – –
16.0 – – 17.0 – – 17.0 – –
dB 20.0 – – 20.0 – – 20.0 – –
19.0 – – 20.0 – – 20.0 – –
17.5 – – 19.0 – – 19.0 – –
16.0 – – 18.0 – – 18.0 – –
TEST CONDITIONS
f = 870 MHz
f = 40 to 870 MHz
40 to 870 MHz;
Peak to Valley
f = 50 MHz
f = 870 MHz
40 to 160MHz
160 to 320 MHz
320 to 640 MHz
640 to 870 MHz
40 to 160MHz
160 to 320 MHz
320 to 640 MHz
640 to 870 MHz
continued on next page
California Eastern Laboratories
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