Datasheet > F1451NKGK8

F1451NKGK8

更新时间： 2024-09-20 01:05:27

品牌	Logo	应用领域
艾迪悌 - IDT		/
页数	文件大小	规格书
28页	7174K
描述
TX Digital VGA 700 MHz to 1100 MHz

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F1451NKGK8 数据手册

TX Digital VGA

700 MHz to 1100 MHz

F1451

Datasheet

Description

Features

The F1451 is a High Gain / High Linearity 700 MHz to 1100 MHz

TX Digital Variable Gain Amplifier used in transmitter applications.

Broadband 700 MHz to 1100 MHz

32 dB max gain

3.6 dB NF @ max gain (900 MHz)

29.5 dB total gain control range, 0.5 dB step

< 2 dB overshoot between gain transitions

Maintains flat +23 dBm OP1dB for more than 13 dB gain

adjustment range

The F1451 TX DVGA provides 32 dB maximum gain with

+41.5 dBm OIP3 and 3.6 dB noise figure. Up to 29.5 dB gain

control is achieved using the combination of a digital step

attenuator (DSA) and a K_LINRF Digital Gain Amplifier. This

device uses a single 5 V supply and 185 mA of I_CC.

Maintains flat +41 dBm OIP3 for more than 15 dB gain

adjustment range

SPI interface for DSA control

Single 5 V supply voltage

I_CC= 185 mA

This device is packaged in a 6 mm x 6 mm, 28-pin QFN with 50 Ω

single-ended RF input and RF output impedances for ease of

integration into the signal-path.

Competitive Advantage

Up to +105 °C T_CASEoperating temperature

In typical Base Stations, RF VGAs are used in the TX traffic paths

to drive the transmit power amplifier. The F1451 TX DVGA offers

very high reliability due to its construction from a monolithic silicon

die in a QFN package. The F1451 is configured to provide an

optimum balance of noise and linearity performance consisting of

a K_LIN^TMRF amplifier, digital step attenuator (DSA) and a PA driver

amplifier. The K_LIN^TMamplifier maintains the OIP3 and output P1dB

performance over an extended attenuation range when compared

to competitive devices.

. 50 Ω input and output impedance

Standby mode for power savings

Pin compatible 2100 MHz and 2700 MHz versions

6 mm x 6 mm, 28-pin QFN package

Block Diagram

Figure 1. Block Diagram

Typical Applications

LIN

Constant

Multi-mode, Multi-carrier Transmitters

WiMAX and LTE Base Stations

UMTS/WCDMA 3G Base Stations

PHS/PAS Base Stations

High Linearity^TM

K_LIN^TMDVGA

DSA

PA Driver

RF IN

RF OUT

Public Safety Infrastructure

SPI &

Decoder

Bias

6 mmx 6 mm

28-pin

/STBY

Digital CTL

November 29, 2016

12 3 4 5 6 7...28

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