Push Pull CATV Amplifier

50 - 1000 MHz

Rev. V1

MAAM-010144

2

2

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2

Parameter

Test Conditions

Units

Min.

Typ.

Max.

Gain

—

dB

19

20.5

23

Gain Flatness

—

dB

—

0.6

—

Noise Figure

—

dB

—

5.5

—

Input Return Loss

—

dB

—

18

—

Output Return Loss

—

dB

—

15

—

Reverse Isolation

—

dB

—

36

—

Output IP2

500 MHz, +8 dBm output

dBm

—

80

—

Output IP3

Two tones at 500 & 506 MHz, +8 dBm output/tone

dBm

41

43

—

Composite Triple Beat, CTB

77 Channels, +39 dBm V / Channel at the output

dBc

—

-70

—

Composite Second Order, CSO

77 Channels, +39 dBm V / Channel at the output

dBc

—

-70

—

Cross modulation

77 Channels, +39 dBm V / Channel at the output

dBc

—

-70

—

P1dB

500 MHz

dBm

—

26

—

+8 Volts

mA

—

325

385

Test Circuit with M/A-COM Technology Balun MABA-009210-CT1760

5. Reference Specification Data-Over-Cable Service Interface Specifications, DOCSIS. Downstream RF Interface Specification, DRFI.

Parameter

Units

Typical data

Test Conditions

Adjacent channel up to 750 KHz from channel

block edge

dBc

<-58

<-58

<-58

-65

-65

-66

Adjacent channel

(750 kHz from channel block edge to 6 MHz

from channel block edge)

dBc

<-62

<-60

<-60

-67

-64

-63

Next-adjacent channel

(6 MHz from channel block edge to 18 MHz

from channel block edge)

dBc

<-65

<-64

<-63

-75

-70

-65

Third-adjacent channel

(12 MHz from channel block edge to 18 MHz

from channel block edge)

dBc

<-73

<-70

<-65

-76

-73

-68

In each of 2N contiguous 6 MHz channels or

in each of 3N contiguous 6 MHz channels

coinciding with 2nd harmonic and with 3rd

harmonic components respectively

(up to 1000 MHz)

dBc

–63

–63

-70

-65

Electrical Specifications: Frequency = 500 MHz, 256 QAM