资料介绍
The MAX2235 low-voltage, silicon RF power amplifier (PA) is designed for use in the 900MHz frequency band. It operates directly from a single +2.7V to +5.5V supply, making it suitable for use with 3-cell NiCd or 1-cell Li-Ion batteries. The device delivers +30dBm (1W) typical output power from a +3.6V supply or +28dBm from a +2.7V supply.
The MAX2235's gain is adjustable over a 37dB range. A power-control pin controls gain and bias to maintain optimum efficiency, even at lower output power levels, thus extending the operating life of the battery. At +30dBm output power, efficiency is typically 47%. An additional power-saving feature is a shutdown mode that typically reduces supply current below 1µA.
A key feature of this PA is its autoramping capability. During turn-on and turn-off periods, the RF envelope is controlled to approximate a raised cosine on the rising and falling edge, thereby minimizing transient noise and spectral splatter. The ramp time is set by selecting the value of an external capacitor.
The MAX2235 is intended for use in constant envelope applications such as AMPS, two-way paging, or FSK-based communications in the 900MHz ISM band. The device is available in a thermally enhanced 20-pin TSSOP package with a heat slug.
The MAX2235's gain is adjustable over a 37dB range. A power-control pin controls gain and bias to maintain optimum efficiency, even at lower output power levels, thus extending the operating life of the battery. At +30dBm output power, efficiency is typically 47%. An additional power-saving feature is a shutdown mode that typically reduces supply current below 1µA.
A key feature of this PA is its autoramping capability. During turn-on and turn-off periods, the RF envelope is controlled to approximate a raised cosine on the rising and falling edge, thereby minimizing transient noise and spectral splatter. The ramp time is set by selecting the value of an external capacitor.
The MAX2235 is intended for use in constant envelope applications such as AMPS, two-way paging, or FSK-based communications in the 900MHz ISM band. The device is available in a thermally enhanced 20-pin TSSOP package with a heat slug.
下载该资料的人也在下载
下载该资料的人还在阅读
更多 >
- LT3465A演示电路-2.4 Mhz白光LED驱动器,内置肖特基(3.6V至4个3.6V LED,20 mA时) 26次下载
- LT3591演示电路-白色LED驱动器(3.6V至10x 3.6V LED@20 mA) 25次下载
- LT1937演示电路-白色LED升压转换器(3.6V至3x 3.6V LED@15 mA) 29次下载
- LT1937演示电路-白色LED升压转换器(3.6V至3x 3.6V LED@15 mA) 4次下载
- LT3465A演示电路-2.4 Mhz白光LED驱动器,内置肖特基(3.6V至4个3.6V LED,20 mA时) 6次下载
- LT3591演示电路-白色LED驱动器(3.6V至10x 3.6V LED@20 mA) 1次下载
- MAX6033 datasheet pdf 29次下载
- MAX6679 datasheet pdf 11次下载
- MAX130, MAX131 pdf datasheet ( 32次下载
- MAX1409, MAX1414 pdf datasheet 8次下载
- MAX1407, MAX1408 pdf datasheet 24次下载
- MAX4038, MAX4039 pdf datasheet 15次下载
- MAX4036, MAX4037 pdf datasheet 22次下载
- MAX516 pdf datasheet 8次下载
- MAX514 pdf datasheet 6次下载
- MAX2235—版图优化技术 532次阅读
- 超低成本+30dBm PA,适用于GSM和900MHz-ISM应用 684次阅读
- 3.6V输入、双路输出µModule降压稳压器为每通道提供2A电流 452次阅读
- 实现外部基准及其对MAX149x Σ-Δ面板仪表ADC增益的影响 498次阅读
- 负至负开关模式转换器提供高电流和高效率 572次阅读
- 分享一个快速阅读datasheet的方法 1808次阅读
- 3.6V变成2.5V电压的稳压电路图 4454次阅读
- dfrobotCR123A可充电式锂电池-3.6V简介 7444次阅读
- dfrobot3节5号电池盒 Micro USB接头简介 1915次阅读
- fireflyAIO-3399J主板无线模块简介 1163次阅读
- 锂电池保护板怎么选择 1.7w次阅读
- 基于MCU+USB接口芯片方案的电子巡更系统硬件设计 2898次阅读
- MAX232引脚图功能应用电路 MAX232中文资料PDF数据手册下载 1.4w次阅读
- 一款关于宽带接收器的电路图 2510次阅读
- MAX4751,MAX4752,MAX4753低电压、单电源、四路SPST模拟开关 1w次阅读
下载排行
本周
- 1TC358743XBG评估板参考手册
- 1.36 MB | 330次下载 | 免费
- 2开关电源基础知识
- 5.73 MB | 11次下载 | 免费
- 3嵌入式linux-聊天程序设计
- 0.60 MB | 3次下载 | 免费
- 4DIY动手组装LED电子显示屏
- 0.98 MB | 3次下载 | 免费
- 5基于FPGA的C8051F单片机开发板设计
- 0.70 MB | 2次下载 | 免费
- 651单片机窗帘控制器仿真程序
- 1.93 MB | 2次下载 | 免费
- 751单片机PM2.5检测系统程序
- 0.83 MB | 2次下载 | 免费
- 8基于51单片机的RGB调色灯程序仿真
- 0.86 MB | 2次下载 | 免费
本月
- 1OrCAD10.5下载OrCAD10.5中文版软件
- 0.00 MB | 234315次下载 | 免费
- 2555集成电路应用800例(新编版)
- 0.00 MB | 33566次下载 | 免费
- 3接口电路图大全
- 未知 | 30323次下载 | 免费
- 4开关电源设计实例指南
- 未知 | 21549次下载 | 免费
- 5电气工程师手册免费下载(新编第二版pdf电子书)
- 0.00 MB | 15349次下载 | 免费
- 6数字电路基础pdf(下载)
- 未知 | 13750次下载 | 免费
- 7电子制作实例集锦 下载
- 未知 | 8113次下载 | 免费
- 8《LED驱动电路设计》 温德尔著
- 0.00 MB | 6656次下载 | 免费
总榜
- 1matlab软件下载入口
- 未知 | 935054次下载 | 免费
- 2protel99se软件下载(可英文版转中文版)
- 78.1 MB | 537798次下载 | 免费
- 3MATLAB 7.1 下载 (含软件介绍)
- 未知 | 420027次下载 | 免费
- 4OrCAD10.5下载OrCAD10.5中文版软件
- 0.00 MB | 234315次下载 | 免费
- 5Altium DXP2002下载入口
- 未知 | 233046次下载 | 免费
- 6电路仿真软件multisim 10.0免费下载
- 340992 | 191186次下载 | 免费
- 7十天学会AVR单片机与C语言视频教程 下载
- 158M | 183279次下载 | 免费
- 8proe5.0野火版下载(中文版免费下载)
- 未知 | 138040次下载 | 免费
评论
查看更多