The ADMV1128A from Analog Devices is a Microwave Upconverter and Downconverter that is designed for 5G radios from 24 to 29.5 GHz. It has an integrated upconverter (a transmitter), a downconverter (a receiver), and a LO chain with options of a 2x or 4x multiplier in one chip. Both upconverters and downconverters offer two modes of frequency translation. One mode is conversion from and/or to single-ended or complex intermediate frequency (IF) signals, which then pass through an on-chip 90° IF hybrid, known as IF mode. The other mode is a direct conversion from and/or to differential baseband in-phase/quadrature (I/Q) inputs and outputs, known as baseband mode. The I/Q baseband output common-mode voltage is programmable between 0.7 V and 1.5 V.
The ADMV1128A has an on-chip RF switch that provides the option to combine the transmit and receive RF ports together for time division duplex (TDD) applications. When the device is used as an image-rejecting downconverter, the unwanted image term is typically rejected to 24 dBc, before calibration. It offers a square-law power detector to allow monitoring of the power levels at the mixer inputs of the downconverter. This converter includes an SPI interface to adjust the quadrature phase to allow optimum sideband rejection. In addition, the SPI allows powering down the output envelope detector to reduce power consumption when carrier feedthrough optimization is not necessary.
The ADMV1128A is available in a thermally enhanced BGA package that measures 6.0 x 6.5 mm and is suitable for use in millimeter-wave 5G applications, point-to-point microwave radios, radar and electronic warfare systems, instrumentation, and automatic test equipment (ATE) applications.
