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AD9787BSVZ

更新时间： 2024-11-05 04:31:11
品牌 Logo 应用领域
亚德诺 - ADI 模拟IC信号电路
页数 文件大小 规格书
64页 1250K
描述
Dual 12-/14-/16-Bit 800 MSPS DAC with Low Power 32-Bit Complex NCO

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AD9787BSVZ 数据手册

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Dual 12-/14-/16-Bit 800 MSPS DAC  
with Low Power 32-Bit Complex NCO  
AD9785/AD9787/AD9788  
GENERAL DESCRIPTION  
FEATURES  
Analog output: adjustable 8.7 mA to 31.7 mA,  
RL = 25 Ω to 50 Ω  
Low power, fine complex NCO allows carrier placement  
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  
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  
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 compens-  
ation. 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.  
100-lead, exposed paddle TQFP package  
APPLICATIONS  
Wireless infrastructure  
WCDMA, CDMA2000, TD-SCDMA, WiMAX, GSM  
Digital high or low IF synthesis  
Transmit diversity  
Wideband communications  
LMDS/MMDS, point-to-point  
PRODUCT HIGHLIGHTS  
1. Low noise and intermodulation distortion (IMD) enable  
high quality synthesis of wideband signals from baseband  
to high intermediate frequencies.  
2. Proprietary DAC output switching technique enhances  
dynamic performance.  
3. CMOS data input interface with adjustable setup and hold.  
4. Low power complex 32-bit numerically controlled  
oscillators (NCOs).  
TYPICAL SIGNAL CHAIN  
QUADRATURE  
MODULATOR/  
MIXER/  
COMPLEX I AND Q  
AMPLIFIER  
LO  
DC  
DC  
DIGITAL INTERPOLATION FILTERS  
I DAC  
POST DAC  
ANALOG FILTER  
FPGA/ASIC/DSP  
Q DAC  
A
Figure 1.  
Rev. 0  
Information furnished by Analog Devices is believed to be accurate and reliable. However, no  
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other  
rights of third parties that may result from its use. Specifications subject to change without notice. No  
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.  
Trademarks and registeredtrademarks arethe property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
Fax: 781.461.3113  
www.analog.com  
©2008 Analog Devices, Inc. All rights reserved.  
 
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AD9787BSVZ 替代型号

型号 品牌 替代类型 描述 数据表
AD9787BSVZRL ADI

完全替代

 Dual 12-/14-/16-Bit 800 MSPS DAC with Low Power 32-Bit Complex NCO

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