LTC4401
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LTC4401

RF Power Controllers with 250kHz Loop BW and 45dB Dynamic Range

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: 过期 tooltip
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产品详情
特性
  • RF Power Amplifier Control in ThinSOT Package
  • 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 VCC Range: 2.7V to 6V
  • 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
  • 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 (LTC4401-2) Packages
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The LTC4401-1 is a SOT-23 RF power controller for slow 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.

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.

Internal and external offsets are cancelled over temperature by an autozero control loop, allowing accurate low power programming. The shutdown feature disables the part and reduces the supply current to <10µA.

A dual control channel version (LTC4401-2) is also available in an 8-pin MSOP package.

Applications

  • GSM/GPRS Cellular Telephones
  • PCS Devices
  • Wireless Data Modems
  • U.S. TDMA Cellular Phones

产品技术资料帮助

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ADI公司所提供的资料均视为准确、可靠。但本公司不为用户在应用过程中侵犯任何专利权或第三方权利承担任何责任。技术指标的修改不再另行通知。本公司既没有含蓄的允许,也不允许借用ADI公司的专利或专利权的名义。本文出现的商标和注册商标所有权分别属于相应的公司。

参考资料

参考资料

产品型号 引脚/封装图-中文版 文档 CAD 符号,脚注和 3D模型
LTC4401-1ES6#TRMPBF
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LTC4401-1ES6#TRPBF
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产品型号

产品生命周期

PCN

9月 10, 2019

- 19_0033

Obsolescence of all materials of LTC4400-1, LTC4400-2, LTC4401-1, LTC4401-2, LTC4402-1, LTC4402-2, LTC4403-1, LTC4403-2, LTC1957-1, LTC1957-2, LTC1758-1, LTC1758-2

LTC4401-1ES6#TRMPBF

过期

LTC4401-1ES6#TRPBF

过期

根据型号筛选

reset

重置过滤器

产品型号

产品生命周期

PCN

9月 10, 2019

- 19_0033

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Obsolescence of all materials of LTC4400-1, LTC4400-2, LTC4401-1, LTC4401-2, LTC4402-1, LTC4402-2, LTC4403-1, LTC4403-2, LTC1957-1, LTC1957-2, LTC1758-1, LTC1758-2

LTC4401-1ES6#TRMPBF

过期

LTC4401-1ES6#TRPBF

过期

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软件和型号相关生态系统

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