Differential Input Gain Block Simplifies Design

RFMW announces design and sales support for a broadband gain block with differential input. The Qorvo QPA9133 gain block offers a 100 Ω differential-input to 50 Ω single-ended output allowing direct interface with transceiver DACs, thereby eliminating the need for a discrete Balun. It is well suited for transmit path gain stages in 5G m-MIMO BTS and is optimized for 3.3 to 5.0 GHz applications. With 18 dB of small signal gain and 34 dBm output 3rd order intercept (OIP3), the QPA9133 has excellent gain flatness of 0.5 dB over any 400 MHz bandwidth and a CMRR of 35 dB. Housed in a compact 2 X 2 mm SMT package, the amplifier features a shut-down function for power-down control.

About the Author
John Hamilton has over 40 years of experience in RF and Microwave technology, applications, technical support and marketing. He is the Vice President of Marketing at RFMW, holds multiple degrees and has a background in Test & Measurement.

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