M/A-COM Technology Solutions MAAM-011186 75Ω reverse-path variable gain amplifier

M/A-COM Technology Solutions has released the MAAM-011186 75Ω reverse-path variable gain amplifier (VGA). The integrated, two-stage, differential amplifier operates from 5 to 300 MHz, with an embedded digital step attenuator (DSA) for CATV reverse-path applications.

The device delivers 36 dB modulation error ratio (MER) performance for 64 QAM modulation and is loaded with 39 channels at 52 dBmV per channel. It is optimised for high output power and low current from 8 V bias but can also be operated from 5 V bias with flexibility to adjust DC current with external components.

Key features include: 39 dB gain; 31.5 dB, 0.5 dB steps, 6-bit DSA; 3 dB noise figure; serial or parallel attenuator control; differential input and output; low harmonics; power down mode. The VGA is offered in a lead-free 7 mm 48-lead PQFN package, making it suitable for high-density cards and compact system amplifiers.