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Product description

The ADMV1128ABBCZ is an isolator on Silicon (SOI), microwave, upconverter, and downconverter, and is optimized for 5G RF designs operating in the frequency range of 24GHz to 29.5GHz.

Both upconverter and downconverter offer two frequency conversion modes. One mode is the conversion from and/or to a single-ended or complex intermediate frequency (IF) signal, which is then mixed through the on-chip 90° IF, called the IF mode.

The other mode is a direct conversion from and/or to differential baseband in-phase/orthogonal (I/Q) inputs and outputs, called baseband mode. The I/Q baseband output common-mode voltage is programmable between 0V and 1.5V. SPI provides fine-tuning of orthogonal phases to optimize I/Q demodulation performance.

peculiarity

An up converter (transmitter), a down converter (receiver) and an LO chain with a 2 x or 4 x multiplier are integrated in the chip

Radio frequency range: 24GHz to 29.5GHz

LO input frequency range: 8GHz to 15GHz in x2 mode and 5GHz to 7.5GHz in x4 mode

Two operating modes of upconverter and downconverter

Differential baseband I/Q direct conversion (Baseband mode)

Complex IF operation with optional in-chip mixing (IF mode)

The programmable baseband output common-mode voltage in receive mode ranges from 0.7V to 1.5V, which can be set by SPI or physical pin

The programmable mixer gate voltage ADAPTS to a common mode of baseband input from 0V to 1.5V in send mode

Matched 50Ω impedance, single-ended RF input and output, and RF switching ports

Matched 50Ω impedance, single-ended LO input

Low phase variation and gain control

Up-conversion mode

Sideband suppression and carrier feedthrough optimization

Envelope detector for LO feed-through calibration

Down-conversion mode

Image suppression and I/Q imbalance optimization

Baseband I/Q DC offset correction

Receiver mixer power detector for receiver gain setting

LO chain characteristics

Variable gain to accommodate various LO drive intensity values

360° phase shifter for LO synchronization

Programmable LO harmonic suppression filter

I/Q phase correction

Fast TDD switching times with external pins

Calibration probe for array calibration

Fully programmable via a 3-wire or 4-wire SPI interface and compatible with the ADMV4828 interface

6mm x 6.5mm, BGA package (see overall dimensions section)

Applications

• Millimeter wave 5G applications

• Point-to-point microwave RF

• Radar and electronic warfare systems

• Instrumentation and automatic test equipment (ATE)