NEC's 870 MHz GaAs CATV

25 dB POWER DOUBLER AMPLIFIER

PACKAGE OUTLINE H02

FEATURES

• GaAs ACTIVE DEVICES

• LOW DISTORTION

• HIGH LINEAR GAIN:

MC-7847-KC - 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.)

9

1

In

Out

Gnd

23 7 8

2.54 ±0.38

21.5 MAX

6-32 unc 2B

2.54±0.25

12 3

5

789

4.19±0.13

14.85 MAX

4.25

+ 0.25

- 0.35

4.0±0.25

5

10.75 ±0.25

27.5 MAX

38.1±0.25

45.08 MAX

0.51±0.05

0.51±0.05

3.2 MAX

A

0.38.. A

25.4±0.25

19.05±0.38

8.1 MAX

2.5

6.3

±0.05

NEC's MC-7847-KC is a GaAs Multi-Chip Modules designed

This is a high gain device offering 25 dB minimum gain at

870 MHz. Because this unit is a GaAs device it has low dis-

tortion, low noise figure, and low return loss across the entire

frequency band.

The MC-7847-KC is similar to NEC's standard push-pull

devices, but the higher current allows for better distortion

performance, especially X-mod.

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 stringent

quality and process control procedures. These parts come in

industry compatible hybrid packages.

APPLICATIONS

• CATV HEADEND SYSTEMS

• CATV OPTICAL NODES

• CATV DISTRIBUTION AMPS

MC-7847-KC

California Eastern Laboratories

PART NUMBER

MC-7847-KC

TEST CONDITIONS

SYMBOLS

CHARACTERISTICS

UNITS

MIN

TYP

MAX

BW

Frequency Range

MHz

50

–

870

Linear Gain

dB

25.0

–

26.0

f = 870 MHz

S

Gain Slope

dB

1.0

1.4

1.8

f = 40 to 870 MHz

Gf

Gain Flatness

dB

–

–

0.6

40 to 870 MHz; Peak to Valley

NF

Noise Figure 1

Noise Figure 2

dB

–

–

5.5

f = 50 MHz

––

6.0

f = 870 MHz

RLi

Input Return Loss

dB

20.0

–

–

40 to 160MHz

20.0

–

–

160 to 320 MHz

19.5

–

–

320 to 640 MHz

17.0

–

–

640 to 870 MHz

Output Return Loss

mA

20.0

–

–

40 to 160MHz

Operating Current

mA

350

–

420

RF OFF

CTB

Composite Triple Beat

dBc

–

–

-60

110 Channels

tilted across the band

XMod

dBc

–

–

-55

CSO

Composite Second Order

dBc

–

–

-63

1. Measured per US standard methods and procedures (using selective level meter).

DESCRIPTION