MC-7847-KC-AZ【PDF 1/2 页】IC AMPLIFIER DBL 870MHZ H02

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MC-7847-KC

870 MHz GaAs CATV

25 dB POWER DOUBLER AMPLIFIER

FEATURES

OUTLINE DIMENSIONS (Units in mm)

27.5 MAX

4.25

? GaAsACTIVEDEVICES

? 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.)

3.2 MAX

14.85 MAX

8.1 MAX

PACKAGE OUTLINE H02

45.08 MAX

38.1±0.25

+ 0.25

- 0.35

4.0±0.25

19.05±0.38

25.4±0.25 6-32 unc 2B

2.54±0.25

0.51±0.05

V DD

2 3 7 8

Gnd

Out

21.5 MAX

2.5

DESCRIPTION

The MC-7847-KC is a GaAs Multi-Chip Modules designed

for use as output stages in CATV applications up to 870 MH z .

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 ?gure, and low return loss across the entire

frequency band.

The MC-7847-KC is similar to the 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 stringent

quality and process control procedures. These parts come in

industry compatible hybrid packages.

1 2 3 5 7 8 9

4.19±0.13 A

0.38.. A 0.51±0.05

APPLICATIONS

? CATV HEADEND SYSTEMS

? CATV OPTICAL NODES

? CATV DISTRIBUTION AMPS

6.3

±0.05

10.75 ±0.25

2.54 ±0.38

ELECTRICAL CHARACTERISTICS (T A = 30±5 °C, V DD = 24 V, Z S = Z L = 75 Ω )

PART NUMBER MC-7847-KC

SYMBOLS CHARACTERISTICS UNITS MIN TYP MAX

BW Frequency Range MHz 50 – 870

G L Linear Gain dB 25.0 – 26.0

S Gain Slope dB 1.0 1.4 1.8

Gf Gain Flatness dB – – 0.6

Noise Figure 1 dB – – 5.5

Noise Figure 2 – – 6.0

RLi Input Return Loss dB 20.0 – –

20.0 – –

19.5 – –

17.0 – –

RL O Output Return Loss mA 20.0 – –

I DD Operating Current mA 350 – 420

CTB Composite Triple Beat dBc – – -60

XMod Cross Modulation 1 dBc – – -55

CSO Composite Second Order dBc – – -63

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

Date Published January 2007

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

RF OFF

110 Channels

V OUT = 50 dBmV at 745.25 MHz, 10 dB

tilted across the band

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