AD9788-EBZ: 双通道、16-Bit、800 MSPS数模转换器（DAC）,内置低功耗32-Bit复数数控振荡器
The AD9785/AD9787/AD9788 are 12-bit, 14-bit, and 16-bit, high dynamic range TxDAC® devices, respectively, that provide a sample rate of 800 MSPS, permitting multicarrier generation up to the Nyquist frequency. Features are included for optimizing direct conversion transmit applications, including complex digital modulation, as well as gain, phase, and offset compensation. The DAC outputs are optimized to interface seamlessly with analog quadrature modulators, such as the ADL537x family from Analog Devices, Inc. A serial peripheral interface (SPI) provides for programming and readback of many internal parameters. Full-scale output current can be programmed over a range of 10 mA to 30 mA. The AD978x family is manufactured on a 0.18 μm CMOS process and operates from 1.8 V and 3.3 V supplies. It is enclosed in a 100-lead TQFP package.
AD9785/AD9787/AD9788分别是12-bit、14-bit、16-bit宽动态范围TxDAC®器件,提供800 MSPS的采样速率,允许高达奈奎斯特频率的多载波生成。其具有面向最优化直接变频传输应用的特性,包括复数数字调制,以及增益、相位和失调补偿。优化的数模转换器输出可以实现与模拟正交调制器（如ADI公司的ADL537x系列产品）的无缝连接。1个串行外设接口（SPI）可提供诸多内部参数的编程与回读。满量程输出电流可在10 mA～30 mA的范围内编程。AD978x系列产品采用0.18µm CMOS工艺制造,工作电压为1.8 V和3.3 V,采用100引脚TQFP封装。
产品聚焦
- Low noise and intermodulation distortion (IMD) enable high quality synthesis of wideband signals from baseband to high intermediate frequencies.
- Proprietary DAC output switching technique enhances dynamic performance.
- CMOS data input interface with adjustable setup and hold.
- Low power complex 32-bit numerically controlled oscillators (NCOs).
- 低噪声与低互调失真（IMD）实现从基带到高中频频率宽带信号的高质量合成
- 专有的模数转换器输出开关技术增强动态性能
- CMOS数据输入接口,具有可调设置与保持功能
- 低功耗32-bit复数数控振荡器（NCO）
产品应用领域 Applications
- Wireless infrastructure
- WCDMA, CDMA2000, TD-SCDMA, WiMAX, GSM
- Digital high or low IF synthesis
- Transmit diversity
- Wideband communications
- LMDS/MMDS, point-to-point
- 无线基础设施
- WCDMA、CDMA2000、TD-SCDMA、WiMAX、GSM
- 数字高中频或低中频合成
- 传输分集
- 宽带通信
- LMDS/MMDS、点对点
AD9788-EBZ 特点
- Analog output: adjustable 8.7 mA to 31.7 mA, RL = 25 Ω to 50 Ω
- Low power, fine complex NCO allows carrier placement anywhere in DAC bandwidth while adding <300 mW power
- Auxiliary DACs allow I and Q gain matching and offset control
- Includes programmable I and Q phase compensation
- Internal digital upconversion capability
- Multiple chip synchronization interface
- High performance, low noise PLL clock multiplier
- Digital inverse sinc filter
- 100-lead, exposed paddle TQFP package
- 模拟输出：8.7 mA～31.7 mA可调 RL = 25 Ω to 50 Ω
- 低功耗、精细复数数控振荡器允许在数模转换器带宽的任何位置设置载波,而功耗增加< 300 mW
- 辅助数模转换器允许I/Q增益匹配和失调控制
- 包括可编程I/Q相位补偿
- 内部数字上变频能力
- 多芯片同步接口
- 高性能、低噪声锁相环时钟乘法器
- 数字反正弦滤波器
- 100引脚裸露焊盘TQFP封装
AD9788-EBZ 功能框图
| 产品型号 | 产品状态 | 封装 | 引脚 | 温度范围 |
|---|---|---|---|---|
| AD9788-EBZ | 量产 | 评估板 | 100 | 商业 |
| AD9788BSVZ | 量产 | 100 ld TQFP-ED(w/ 6.5mm exposed pad) | 100 | 商业 |
| AD9788BSVZRL | 量产 | 100 ld TQFP-ED(w/ 6.5mm exposed pad) | 100 | 商业 |
| AD9788MOD-EBZ | 量产 | 评估板 | 100 | 商业 |
