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AD9783_15

更新时间: 2024-12-02 01:11:47
品牌 Logo 应用领域
亚德诺 - ADI /
页数 文件大小 规格书
32页 937K
描述
Dual 12-/14-/16-Bit, LVDS Interface, 500 MSPS DACs

AD9783_15 数据手册

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Dual 12-/14-/16-Bit,  
LVDS Interface, 500 MSPS DACs  
Data Sheet  
AD9780/AD9781/AD9783  
FEATURES  
GENERAL DESCRIPTION  
High dynamic range, dual DAC parts  
The AD9780/AD9781/AD9783 include pin-compatible, high  
dynamic range, dual digital-to-analog converters (DACs) with  
12-/14-/16-bit resolutions, and sample rates of up to 500 MSPS.  
The devices include specific features for direct conversion transmit  
applications, including gain and offset compensation, and they  
interface seamlessly with analog quadrature modulators such as  
the ADL5370.  
Low noise and intermodulation distortion  
Single carrier W-CDMA ACLR = 80 dBc @ 61.44 MHz IF  
Innovative switching output stage permits usable outputs  
beyond Nyquist frequency  
LVDS inputs with dual-port or optional interleaved single-  
port operation  
Differential analog current outputs are programmable from  
8.6 mA to 31.7 mA full scale  
Auxiliary 10-bit current DACs with source/sink capability for  
external offset nulling  
A proprietary, dynamic output architecture permits synthesis  
of analog outputs even above Nyquist by shifting energy away  
from the fundamental and into the image frequency.  
Full programmability is provided through a serial peripheral  
interface (SPI) port. Some pin-programmable features are also  
offered for those applications without a controller.  
Internal 1.2 V precision reference voltage source  
Operates from 1.8 V and 3.3 V supplies  
315 mW power dissipation  
Small footprint, RoHS compliant, 72-lead LFCSP  
PRODUCT HIGHLIGHTS  
APPLICATIONS  
1. Low noise and intermodulation distortion (IMD) enable  
high quality synthesis of wideband signals.  
2. Proprietary switching output for enhanced dynamic  
performance.  
Wireless infrastructure  
W-CDMA, CDMA2000, TD-SCDMA, WiMAX  
Wideband communications  
3. Programmable current outputs and dual auxiliary DACs  
provide flexibility and system enhancements.  
LMDS/MMDS, point-to-point  
RF signal generators, arbitrary waveform generators  
FUNCTIONAL BLOCK DIAGRAM  
CLKP  
CLKN  
AD9783 DUAL LVDS DAC  
IOUT1P  
IOUT1N  
16-BIT  
I DAC  
INTERFACE LOGIC  
IOUT2P  
IOUT2N  
16-BIT  
Q DAC  
LVDS  
INTERFACE  
D[15:0]  
GAIN  
DAC  
V
, V  
IA IB  
GAIN  
DAC  
AUX1P  
AUX1N  
OFFSET  
DAC  
INTERNAL  
REFERENCE  
AND  
SERIAL  
PERIPHERAL  
INTERFACE  
AUX2P  
AUX2N  
OFFSET  
DAC  
BIAS  
Figure 1.  
Rev. B  
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 www.analog.com  
Fax: 781.461.3113 ©2007–2012 Analog Devices, Inc. All rights reserved.  
 
 
 
 
 

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