mmWave Upconverter/Downconverter

24GHz to 30GHz

F5728

Short-Form Datasheet

© 2020 Renesas Electronics Corporation

1

May 12, 2020

2x

2x

EXTLO

RF

T/R Switch

TX

Driver

Image Rejection

Mixer

SSB Mixer

TX IF

0.25dB Step

20dB Range

VGA

Doubler

Bypass

LO

Doubler

LO

Doubler

LO

Driver

LO

Amp

LO Switch

Bias Control

Circuitry

[Servicing All

Active Blocks]

SDI

CLK

CSB

DVCC

STBY

TRX_SEL

RX

INT_LO

Temp

Sensor

TX

INT_LO

TXIF

RX IF

0.25dB Step

20dB Range

VGA

TX RF

1dB Step

10dB Range

VGA

RX RF

1dB Step

10dB Range

VGA

RXIF

SDO

REXT

RESET

ADD1

ADD3

ADD2

Control Lines

VCC

Description

The F5728 is a highly integrated RF upconverter/downconverter

used in 5G beamforming applications targeting the 26GHz and

28GHz bands. The device uses classic Tx and Rx heterodyne

architectures to convert 3GHz to 9GHz IF signals to the 5G NR

(new radio) millimeter wave (mmWave) bands spanning the 24GHz

to 30GHz spectrum. Low-side local oscillator (LO) injection is used

for both bands, with the F5728’s Tx and Rx mixer cores supporting

internal LO frequencies ranging between 15GHz and 27GHz. LO

feed requirements are eased by the device’s two sequential on-

chip LO frequency doublers which yield net multiplicative factors of

either 2x or 4x.

All RF, IF, and LO ports use single-ended 50Ω impedances for

ease of integration into the signal path. Each device uses a single

modes, respectively. The digital core and SPI utilize a separate

1.8V supply.

The F5728 is packaged in 4.0 × 4.0 mm, 49-BGA package and is

rated for operation over the -40°C to 105°C temperature range.

Typical Applications



5G phased arrays



Massive MIMO

Features

General



RF range: 24GHz to 30GHz



IF range: 3GHz to 9GHz



Two integrated LO frequency doublers





4.0 × 4.0 mm, 49-BGA package

Transmit Mode



25dB conversion gain



+16dBm OP1dB





20dB IF adjustment in 0.25dB steps



10dB RF adjustment in 1dB steps



Receive Mode



22dB conversion gain



7dB noise figure





20dB IF adjustment in 0.25dB steps



10dB RF adjustment in 1dB steps



Block Diagram