DIFF-In / SE-Out Quad Path TX

DVGA 1300MHz to 2800MHz

F4482

Datasheet

December 15, 2020

Description

The F4482 is a 1300MHz to 2800MHz Quad Path TX DVGA

outfitted with 100Ω differential inputs and 50Ω single-ended

outputs. The device is part of a complete family of VGAs targeting

FDD and TDD applications within the 400MHz to 4200MHz

frequency range.

Using a single 3.3 V power supply and only 500mA of I

, the F4482

provides four independent transmit paths, each with 28dB typical

maximum gain, +34dBm OIP3, +17dBm output P1dB, and 5.7dB

NF. Each channel includes a glitch-free digital step attenuator that

reduces gain by up to 31.5dB in precise 0.5dB st eps.

The F4482 is packaged in an 8 × 8 mm 56-LGA, with matched

100Ω differential input and 50Ω single-ended output impedances

for ease of integration into the signal path.

Competitive Advantage

 Combines four independent TX channels consisting of an

LPF, LNA, DSA, and Driv e r in a compact 8 × 8 LGA package

 Low DC power

 High linearity

 High reliability

 Uses Renesas’ patented Zero-Distortion

and Glitch-Free

technologies, providing superior performance and PA damage

protection over the entire RF gain range

Typical Applications

 4G and 5G Multi-mode, Multi-carrier Transmitters

 LTE and UMTS/WCDM A Ba se Stations

 Active Antenna Systems

 Digital Radio

Features

 Independent Quad Channels for FDD TX applications

 RF Range: 1300MHz to 2800MHz

• F4481: 400MHz to 1100MHz

 28dB Typical Maximum Gain at 2100MHz

 Precise SPI-Controlled Glitch-Free

Gain Adjustment

• 31.5dB Gain Range with 0.5dB Step Size

 5.7dB NF at 2100MHz

 +34dBm OIP3 at 2100MHz

 +17dBm Output P1dB at 2100MHz

 3.3V Supply Voltage

 I

= 500mA

 100Ω Differential Input Impedances

 50Ω Single-ended Output Impedances

 1.8V and 3.3V Logic Support

 Independent Channel Standby Modes for Power Savings

 Operating Temperature (T

) Range: -40°C to +105°C

 8 × 8 mm, 56-LGA package

Block Diagram

F4482

Datasheet

December 15, 2020

Contents

Pin Assignments ....................................................................................................................................................................................................6

Pin Descriptions .....................................................................................................................................................................................................7

Absolute Maximum Ratings ...................................................................................................................................................................................9

Recommended Operating Conditions .................................................................................................................................................................10

Electrical Characteristics – General ....................................................................................................................................................................11

Electrical Characteristics – Band 1 (1300MHz to 1700MHz) ...............................................................................................................................14

Electrical Characteristics – Band 2 (1700MHz to 2800MHz) ...............................................................................................................................18

Thermal Characteristics .......................................................................................................................................................................................22

Typical Operating Conditions (TOC) ...................................................................................................................................................................22

Typical Performance Characteristics ...................................................................................................................................................................23

Programming .......................................................................................................................................................................................................36

Serial Programming ....................................................................................................................................................................................36

Device Register Maps .......................................................................................................................................................................36

Serial Mode Default Condition ...........................................................................................................................................................38

Timing Associated with Programming the Serial Registers ...............................................................................................................38

SPI Timing Intervals ..........................................................................................................................................................................39

Standby Mode Programming ......................................................................................................................................................................40

Control Pin Interface ...................................................................................................................................................................................41

Evaluation Kit Picture ..........................................................................................................................................................................................42

Evaluation Kit / Applications Circuit .....................................................................................................................................................................43

Evaluation Kit Operation ......................................................................................................................................................................................45

Power Supplies ...........................................................................................................................................................................................45

Power Supply Setup ...................................................................................................................................................................................45

Power-On Procedure ..................................................................................................................................................................................45

Power-Off Procedure ..................................................................................................................................................................................45

Startup Condition ........................................................................................................................................................................................45

Default Channel Power On .........................................................................................................................................................................45

Chip Select (CSb) .......................................................................................................................................................................................45

Standby Mode (STBY) ................................................................................................................................................................................45

Package Outline Drawings ..................................................................................................................................................................................46

Ordering Information ............................................................................................................................................................................................46

Marking Diagram .................................................................................................................................................................................................46

Revision History ...................................................................................................................................................................................................46

List of Figures

Figure 1. Pin Assignments for 8 × 8 × 0.65 mm LGA Package – Top View ..........................................................................................................6

Figure 2. Gain vs DSA Setti ng .............................................................................................................................................................................23

Figure 3. Gain vs Attenuation ..............................................................................................................................................................................23