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The ADMV4928BBCZ is a Silicon on Insulator (SOI), 37.0 GHz to 43.5 GHz, mmW 5G beamformers. The RF integrated circuit (RFIC) is highly integrated and contains 16 separate transmit and receive channels. The ADMV4928 supports eight horizontally and eight vertically polarized antennas with separate RFV and RFH inputs/outputs.

The ADMV4928 can be programmed through a 3-wire or 4-wire serial port interface (SPI). The integrated Low Voltage Difference (LDO) regulator generates a 1.0V supply voltage for the SPI circuit, reducing the number of power domains required.

The ADMV4928 offers a variety of SPI modes for fast startup and control during normal operation. The amplitude and phase of each channel can be set individually or multiple channels can be programmed simultaneously using on-chip memory to achieve beamforming. On-chip memory can store up to 2048 beam positions, which can be allocated for horizontal and vertical channels in transmit mode or receive mode.

Product: ADMV4928BBCZ

Package: BGA-239

Type: Beamformers

Features:

RF range: 37.0GHz to 43.5GHz

Output power >11.5 dBm (3% EVM, 400 MHz 64 QAM 5G NR waveform, only 340 mW per channel)

Complete features with 5G NR, WiFi 5, WiFi 6 and CPE UL waveforms

EVM performance is not degraded at 5G NR wide channel bandwidth

16 configurable transmit and receive channels

Dual polarization, 8 horizontal and 8 vertical channels

Fast TDD switching time (using TRX_x pin)

Matches 50 Ω, single-ended RF inputs and outputs

Single transmitter channel power detector and temperature sensor

Integrated single receive channel overload detection circuit

High-resolution, 6-bit VM is used to control phase

High resolution, 6 - and 5-bit DVGA are used to control amplitude

The memory is used for 2048 shared transmit and receive beam locations

NVM is used for phase and gain calibration

Dual power supply required: 1.8V and 1.2V (integrated on-chip LDO regulator provides 1.0V voltage)

3-wire or 4-wire SPI supports SPI clock speeds up to 133 MHz (see AN-2074 Application Notes ADMV4928 Application Notes)

239 pin, 10 mm x 7 mm CSP_BGA package

Applications:

• mmW 5G applications

• Broadband communication