Datasheet > LTC4401-1_15

LTC4401-1_15

更新时间： 2024-11-12 01:16:27

品牌	Logo	应用领域
凌特 - Linear		/
页数	文件大小	规格书
16页	196K
描述
RF Power Controllers with 250kHz Loop BW and 45dB Dynamic Range

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中文翻译

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数据手册

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LTC4401-1_15 数据手册

LTC4401-1/LTC4401-2

RF Power Controllers

with 250kHz Loop BW

and 45dB Dynamic Range

FEATURES

DESCRIPTIO

RF Power Amplifier Control in ThinSOT^TMPackage

TheLTC^®4401-1isaSOT-23RFpowercontrollerforslow

turn-on RF power amplifiers operating in the 300MHz to

2.7GHz range. The loop bandwidth is set at 250kHz

to improve frequency stability when controlling slow

turn-on RF power amplifiers such as the Conexant

CX77301/CX77302, CX77304, CX77314, Anadigics

AWT6107 and the RF Micro Devices RF3160.

■

Internal Schottky Diode Detector with >45dB Range

Wide Input Frequency Range:

■

300MHz to 2.7GHz (LTC4401-1)

300MHz to 2GHz (LTC4401-2)

■

Autozero Loop Cancels Offset Errors and

Temperature Dependent Offsets

Wide V_CCRange: 2.7V to 6V

■

RF power is controlled by driving the RF amplifier power

control pins and sensing the resultant RF output power

via a directional coupler. The RF sense voltage is peak

detected using an on-chip Schottky diode. This detected

voltage is compared to the DAC voltage at the PCTL pin

to control the output power. The RF power amplifier is

protected against high power control pin voltages.

■

Automatic Bandwidth Control Improves Low Power

Ramp Response

■

Allows Direct Connection to Battery

■

RF Output Power Set by External DAC

■

Internal Frequency Compensation

■

Rail-to-Rail Power Control Output

■

Power Control Signal Overvoltage Protection

■

Internal and external offsets are cancelled over tempera-

ture by an autozero control loop, allowing accurate low

power programming. The shutdown feature disables the

part and reduces the supply current to <10µA.

Low Operating Current: 1mA

■

Low Shutdown Current: 10µA

■

Two Pole PCTL Input Filtering

■

Low Profile (1mm) SOT-23 (ThinSOT™) (LTC4401-1)

^{and 8-Pin MSOP}U^{(LTC4401-2) Packages}

A dual control channel version (LTC4401-2) is also

available in an 8-pin MSOP package.

APPLICATIO S

, LTC and LT are registered trademarks of Linear Technology Corporation.

ThinSOT is a trademark of Linear Technology Corporation.

■

GSM/GPRS Cellular Telephones

■

PCS Devices

■

Wireless Data Modems

■

U.S. TDMA Cellular Phones

TYPICAL APPLICATIO

LTC4401-1 Dual Band Cellular Telephone Transmitter

68Ω

33pF

BAND

Li-Ion

0.1µF

LTC4401-1

SELECT

900MHz

OUTPUT

SHDN

PCA

900MHz

INPUT

PA MODULE

PCTL

GND

DAC

1.8GHz

OUTPUT

1.8GHz

INPUT

50Ω

4401 TA01

4401fa

12 3 4 5 6 7...16

中文翻译

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与LTC4401-1_15相关器件

型号	品牌	获取价格	描述	数据表
LTC4401-1ES6	Linear	获取价格	RF Power Controllers with 250kHz Loop BW and 45dB Dynamic Range
LTC4401-1ES6#PBF	Linear	获取价格	暂无描述
LTC4401-1ES6#TR	Linear	获取价格	LTC4401 - RF Power Controllers with 250kHz Loop BW and 45dB Dynamic Range; Package: SOT; P
LTC4401-1ES6#TRM	Linear	获取价格	LTC4401 - RF Power Controllers with 250kHz Loop BW and 45dB Dynamic Range; Package: SOT; P
LTC4401-1ES6#TRMPBF	Linear	获取价格	LTC4401 - RF Power Controllers with 250kHz Loop BW and 45dB Dynamic Range; Package: SOT; P
LTC4401-1ES6#TRPBF	Linear	获取价格	LTC4401 - RF Power Controllers with 250kHz Loop BW and 45dB Dynamic Range; Package: SOT; P
LTC4401-2	Linear	获取价格	RF Power Controllers with 250kHz Loop BW and 45dB Dynamic Range
LTC4401-2_15	Linear	获取价格	RF Power Controllers with 250kHz Loop BW and 45dB Dynamic Range
LTC4401-2EMS8	Linear	获取价格	RF Power Controllers with 250kHz Loop BW and 45dB Dynamic Range
LTC4401-2EMS8#PBF	Linear	获取价格	LTC4401-2 - RF Power Controllers with 250kHz Loop BW and 45dB Dynamic Range; Package: MSOP

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