基于CMOS 200 MHZ数字正交上变频器设计

字数:18260,页数:37

摘要:这ad9856集成一高速、直接数字式的合成器（DDS）、一高性能、高速、12bit数模转换器（DAC）、时钟乘法器电路、数字式的过滤器，及其他DSP功能接通单个集成电路块到原产地证明书A式完成正交数字式的上变频器设计。这ad9856是用来起一通用的I\O调制器和灵活的上变频器适合于通信应用成本、尺寸、功率耗散，并且动态特性吃紧特征。
这ad9856生效在应答间隔除外部管脚包装外，并且是指定到运行该扩展产业的温度范围从40°C到+85°C。

Abstract:The AD9856 integrates a high speed, direct digital synthesizer (DDS), a high performance, high speed, 12-bit digital-to-analog converter (DAC), clock multiplier circuitry, digital filters, and other DSP functions on a single chip to form a complete quadrature digital upconverter device. The AD9856 is intended to function as a universal I/Q modulator and agile upconverter for communications applications where cost, size, power dissipation, and dynamic performance are critical attributes. The AD9856 is available in a space-saving surface-mount package, and is specified to operate over the extended industrial temperature range of  40°C to +85°C.
关键词: 数字正交调制   上变频   D A B

目录:

摘要........................................................................ 1
规格................................................................. .......2
绝对最大额定值.............................................................. 4
引脚配置与功能描述.......................................................... 5
典型动态特性象征性的调制输出频谱的绘图...................................... 8
寄存器串行的控制总线.................................................. .....12
寄存器位定义 .............................................................. 13
工作原理 ............................................................. .....14
单一的特性输出操作......................................................... 15
输入比率（FW）与REFCLK关系...................................,......... ....16
I/Q数据脉冲同步........................................................ ....16
触发脉冲输入端同步 .........................................................17
半带通滤波器 (HBFS) ....................................................... 20
正交数字式调制器..................................................... ......23
CIC内插滤波器插入损耗目录.. ............................................... 24
反相的sinc滤波器（ISF） ................................................... 25
直接数字式的合成器功能 ............................................... .....26
指令字节............................................................... ....28
PIN-SELECTABLE调制器的截面分布....................................... ......31
功耗度..................................................................... 32
总电路图 .............................................................. ....34
封装尺寸................................................................... 37