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Variable-gain amplifier provides best-in-class linearity and high output power

Wed, 06/05/2013 - 3:33pm

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M/A-COM Technology Solutions introduced at the ANGACOM 2013 Exhibition and Congress a highly linear, two-stage differential amplifier for DOCSIS3.1 reverse path infrastructure applications.

The MAAM-011122 is an integrated two stage differential variable gain amplifier designed specifically for CATV head-end and system amplifier infrastructure reverse path applications. This multi-chip module VGA leverages leading edge technologies providing best in class linearity and high output power. This enables customers to achieve 36dB MER for 64 QAM modulation with 39 channels at 52 dBmV per channel. Unlike the competition, this device offers a power down function for each of the amplifier stages allowing reduced power consumption (green operation), when less gain is required. This configurability makes the MAAM-011122 an ideal solution to replace legacy Silicon and GaAs solutions for upcoming DOCSIS3.1 upgrades.

The table below outlines typical performance:

 

Parameters

Unit

MAAM-011122

Frequency

MHz

5-300

Gain

dB

39

Noise Figure

dB

3

Input Return Loss

dB

22

Output Return Loss

dB

22

Reverse Isolation

dB

50

Attenuation Range

dB

31.5

P1dB

dBm

27

OIP2

dBm

70

OIP3

dBm

42

Operating between the 5 – 300 MHz frequency range, The MAAM-011122 exhibits strong performance with 3 dB low Noise Figure and 39 dB Gain. Packaged in a 7mm 48-Lead PQFN, the amplifier boasts low harmonics with differential input and output control - altogether making it an excellent solution for customers looking for an amplifier solution for DOCSIS3.1 reverse path infrastructure applications. 

Samples of MAAM-011122 are available from stock. Final datasheets and additional product information can be obtained from the MACOM website at: www.macomtech.com.

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