资料介绍
The MAX2720/MAX2721 are low-cost, high-performance, direct QPSK modulators designed for use in wideband-CDMA and wireless local-loop (WLL) systems. Their direct-upconversion architecture reduces system cost, component count, and board space compared to devices with dual-conversion architectures.
The MAX2720/MAX2721 include an QPSK modulator, a variable gain amplifier (VGA), and a power amplifier (PA) driver. The QPSK modulator accepts differential baseband I/Q signals and directly modulates an RF carrier in the 1.7GHz to 2.1GHz range (MAX2720) or the 2.1GHz to 2.5GHz range (MAX2721). The VGA provides 35dB of output power control. The QPSK modulator's amplitude and phase balance yield 35dBc of sideband suppression and 30dBc of carrier suppression. These devices feature an LO frequency doubler that allows the external LO source to operate at half-frequency or full-frequency when disabled.
The MAX2720/MAX2721 operate from a single +2.7V to +3.3V supply and require only 77mA (MAX2720) or 86mA (MAX2721) of supply current. An additional 20mA of supply current is saved by disabling the stand-alone PA driver. A low-power shutdown mode further reduces supply current to less than 0.1µA. The device is packaged in the small 20-pin TSSOP-EP with exposed paddle to improve RF performance.
The MAX2720/MAX2721 include an QPSK modulator, a variable gain amplifier (VGA), and a power amplifier (PA) driver. The QPSK modulator accepts differential baseband I/Q signals and directly modulates an RF carrier in the 1.7GHz to 2.1GHz range (MAX2720) or the 2.1GHz to 2.5GHz range (MAX2721). The VGA provides 35dB of output power control. The QPSK modulator's amplitude and phase balance yield 35dBc of sideband suppression and 30dBc of carrier suppression. These devices feature an LO frequency doubler that allows the external LO source to operate at half-frequency or full-frequency when disabled.
The MAX2720/MAX2721 operate from a single +2.7V to +3.3V supply and require only 77mA (MAX2720) or 86mA (MAX2721) of supply current. An additional 20mA of supply current is saved by disabling the stand-alone PA driver. A low-power shutdown mode further reduces supply current to less than 0.1µA. The device is packaged in the small 20-pin TSSOP-EP with exposed paddle to improve RF performance.
下载该资料的人也在下载
下载该资料的人还在阅读
更多 >
- ICOM 2720说明书部分中文翻译参考 0次下载
- 爱康姆IC-2720维修手册(含图纸) 0次下载
- UPA2720AGR 数据表 0次下载
- FC2720单片机中文版说明书 0次下载
- SZFC 8位单片机FC2720用户参考手册 16次下载
- MAX603,MAX604 datasheet pdf 18次下载
- MAX4158, MAX4159, MAX4258, MAX 17次下载
- dg2720 pdf datasheet (2 Port, 5次下载
- MAX2361, MAX2363, MAX2365 pdf 21次下载
- MAX4478, MAX4488, MAX4489 pdf 42次下载
- MAX4475, MAX4476, MAX4477 pdf 58次下载
- MAX8805-MAX8805Z中文资料pdf 37次下载
- MAX4914B-MAX4917B中文资料pdf 30次下载
- MAX4795/6/7,MAX4798中文资料pdf 19次下载
- MAX4772-MAX4773中文资料pdf 17次下载
- max30100和max30102的区别 1014次阅读
- 配合MAX9217/MAX9218/MAX9247/MAX9248/MAX9250评估板工作 1638次阅读
- 减少使用芯片的数量,宽带应用的理想选择:MAX2721直接频率变换上变频器 316次阅读
- 推荐MAX3955和MAX3956器件的初始化顺序 417次阅读
- max3485与max485区别详解(解析为什么max3485不能代替max485) 9.6w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
- MAX8873,MAX8874低压差、120mA线性稳压器数据资料 1353次阅读
- MAX14576,MAX14636,MAX14637 USB充电器检测器 1678次阅读
- MAX17595-MAX17597峰值电流模式控制器 1983次阅读
- MAX9039–MAX9043,MAX9050–MAX9053低功耗比较器与精密电压基准源 1712次阅读
- MAX5134-MAX5137内最小的16位DAC 1648次阅读
- MAX4751,MAX4752,MAX4753低电压、单电源、四路SPST模拟开关 1w次阅读
- 如何优化MAX16974-MAX16976的电路布局 1704次阅读
- MAX16047A/MAX16049A EEPROM可配置系 1438次阅读
- MAX5970应用电路 2331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