Datasheet > F1358

F1358

更新时间： 2024-11-06 14:57:19

品牌	Logo	应用领域
瑞萨 - RENESAS		光电二极管
页数	文件大小	规格书
38页	2316K
描述
High Frequency-band DPD Demodulator with Integrated DSA and RF Switch

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F1358 数据手册

IDTF1358NBGI

Datasheet

DPD Demodulator for PA Linearization

3200 MHz to 4000 MHz

FEATURES

 Wide flat performance IF BW

GENERAL DESCRIPTION

This document describes the specification for the

IDTF1358 Digital Pre-Distortion Demodulator for PA

linearization. This series of devices is offered in 3

variants to cover common UTRA bands.

 Wide RF and LO BWs (~ 800 MHz)

 LO can be High or Low Side

 Ideal for Multi-Carrier Systems

 Drives ADC directly

 Ultra linear +41 dBm OIP3

 Excellent ACLR performance

 200 Ω output impedance

 Fully integrated DPD demodulator

 Standby Mode w/Fast Recovery

 Current draw is 216 mA

COMPETITIVE ADVANTAGE

In typical basestation transmitters, digital pre-distortion

is employed to improve the Transmitter performance.

The signal coming out of the PA is sampled and the

incoming Tx chain I&Q data is pre-distorted to

counteract the distortion inherent in the PA. The PA

signal is adjusted via a digital step attenuator to a lower

level and then sub-sampled at an IF frequency of ~200

MHz which necessitates the need for a highly linear

demodulator to downmix to quadrature IF from the

Transmit frequency. By sampling IF_I and IF_Q

independently and then digitally combining these signals,

an effective doubling of the sample rate can be achieved.

Any distortion in this path will degrade the performance

of the DPD algorithm. By utilizing an ultra-linear

demodulator w/integrated DSA such as the IDTF1358,

the ACLR and/or power consumption of the full Tx

system can be improved significantly.

 6 x 6 mm 36 pin package

FUNCTION BLOCK DIAGRAM

Zero-Distortion^TM

Glitch-Free^TM

CLK

DATA

CSb

SPI

DEC

IF_I

STBY

I_SET

Bias

Ctrl

I_BIAS

90^O

 GlitchFree^TMTechnology gives better gain

IF_Q

RF_X

RF_Y

control

 Zero-Distortion^TMeliminates the need for a

second IF amplifier in the channel

 ACLR is reduced for the full channel

 Power Consumption is reduced by 40%

ORDERING INFORMATION

Omit IDT

prefix

0.8 mm height

Tape &

Reel

 Integrates 2 BPFs, 2 Baluns, and a SPDT RF

package

switch

IDTF1358NBGI8

RF product Line

Green Industrial

Temp range

Zero-Distortion^TM, Glitch-Free^TM, DPD Receiver

Rev O, June 2015

12 3 4 5 6 7...38

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