Datasheet > F1455

F1455

更新时间： 2024-11-22 01:04:47

品牌	Logo	应用领域
艾迪悌 - IDT		/
页数	文件大小	规格书
27页	2838K
描述
TX Digital VGA

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F1455 数据手册

TX Digital VGA

1400 MHz to 2300 MHz

F1455

Datasheet

Description

Features

The F1455 is a High Gain / High Linearity 1400 MHz to 2300 MHz

TX Digital Variable Gain Amplifier used in transmitter applications.

Broadband 1400 MHz to 2300 MHz

32.8 dB max gain

3.9 dB NF @ max gain (2000 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 F1455 TX DVGA provides 32.8 dB maximum gain with

+38.5 dBm OIP3 and 3.9 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 220 mA of I_CC.

Maintains flat +38.5 dBm OIP3 for more than 15 dB gain

adjustment range

SPI interface for DSA control

Single 5 V supply voltage

I_CC= 220 mA

Up to +105 °C T_CASEoperating temperature

50 Ω input and output impedance

Standby mode for power savings

Pin compatible with 700 MHz and 2700 MHz versions

6 mm x 6 mm, 28-pin QFN package

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

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

to drive the transmit power amplifier. The F1455 TX DVGA offers

very high reliability due to its construction from a monolithic silicon

die in a QFN package. The F1455 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.

Block Diagram

Figure 1. Block Diagram

Typical Applications

KL_LI_IN_N

Constant

Multi-mode, Multi-carrier Transmitters

PCS1900 Base Stations

High Linearity^TM

K_LIN^TMDVGA

DSA

PA Driver

DCS1800 Base Stations

RF IN

WiMAX and LTE Base Stations

UMTS/WCDMA 3G Base Stations

PHS/PAS Base Stations

RF OUT

Public Safety Infrastructure

SPI &

Decoder

Bias

6 mm x 6 mm

28-pin

/STBY

Digital CTL

October 19, 2016

12 3 4 5 6 7...27

中文翻译

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