NEC's 870 MHz GaAs CATV

PUSH-PULL AMPLIFIER

MC-7831

MC-7832

MC-7833

PACKAGE OUTLINE H02

FEATURES

• GaAs ACTIVE DEVICES

• LOW DISTORTION

• HIGH LINEAR GAIN:

MC-7831 - GL = 18 dB MIN at f = 870 MHz

MC-7832 - GL = 22 dB MIN at f = 870 MHz

MC-7833 - 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-7831, MC-7832, and MC-7833 are GaAs Multi-

Chip Modules designed for use as input stages in CATV ap-

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.

9

1

In

Out

Gnd

23 7 8

2.54±0.38

21.5 MAX

6-32 unc 2B

2.54±0.25

1 2 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±0.050

3.2 MAX

A

0.38.. A

25.4±0.25

19.05±0.38

8.1 MAX

2.5

6.3

California Eastern Laboratories

APPLICATIONS

• CATV HEADEND SYSTEMS

• CATV OPTICAL NODES

• CATV DISTRIBUTION AMPS

PART NUMBER

MC-7831

MC-7832

MC-7833

SYMBOLS

CHARACTERISTICS

UNITS

MIN

TYP MAX MIN

TYP MAX

MIN

TYP MAX

TEST CONDITIONS

BW

Frequency Range

MHz

50

–

870

50

–

870

50

–

870

Linear Gain

dB

18.0

–

19.0 22.0

–

23.0

25.0

–

26.0

f = 870 MHz

S

Gain Slope

dB

0.2

–

1.0

0.6

–

1.4

1.0

–

1.8

f = 40 to 870 MHz

Gf

Gain Flatness

dB

–

–

0.7

–

–

0.7

–

–

0.7

40 to 870 MHz;

Peak to Valley

NF

Noise Figure 1

dB

–

–

6.5

–

–

6.0

–

–

5.5

f = 50 MHz

Noise Figure 2

–

–

7.0

–

–

6.5

–

–

6.0

f = 870 MHz

RL

Input/Output Return Loss

dB

20.0

–

–

20.0

–

–

20.0

–

–

40 to 160MHz

19.0

–

–

19.0

–

–

19.0

–

–

160 to 320 MHz

17.5

–

–

17.5

–

–

17.5

–

–

320 to 640 MHz

16.0

–

–

16.0

–

–

16.0

–

–

640 to 870 MHz

IDD

Operating Current

mA

180

–

240

180

–

240

180

–

240

RF OFF

CTB

Composite Triple Beat

dBc

–

-59

-57

–

-59

-57

–

-59

-57

f = 40 to 870 MHz

XMod

dBc

–

-51

-50

–

-53

-50

–

-53

-50

110 Channels,

CSO

Composite Second Order

dBc

–

-63

-57

–

-60

-57

–

-61

-57

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