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參數(shù)資料
| 型號： | AD9779BSVZRL |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 1/56頁 |
| 文件大小： | 0K |
| 描述： | IC DAC 16BIT DUAL 1GSPS 100TQFP |
| 產(chǎn)品培訓模塊： | Data Converter Fundamentals DAC Architectures |
| 標準包裝： | 1,000 |
| 位數(shù)： | 16 |
| 數(shù)據(jù)接口： | 串行 |
| 轉(zhuǎn)換器數(shù)目： | 2 |
| 電壓電源： | 模擬和數(shù)字 |
| 功率耗散（最大）： | 300mW |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 100-TQFP 裸露焊盤 |
| 供應商設(shè)備封裝： | 100-TQFP-EP（14x14） |
| 包裝： | 帶卷 (TR) |
| 輸出數(shù)目和類型： | 4 電流，單極 |
| 采樣率（每秒）： | 1G |
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Dual 12-/14-/16-Bit,
1 GSPS, Digital-to-Analog Converters
AD9776/AD9778/AD9779
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
2005–2007 Analog Devices, Inc. All rights reserved.
FEATURES
Low power: 1.0 W @ 1 GSPS, 600 mW @ 500 MSPS,
full operating conditions
SFDR = 78 dBc to fOUT = 100 MHz
Single carrier WCDMA ACLR = 79 dBc @ 80 MHz IF
Analog output: adjustable 8.7 mA to 31.7 mA,
RL = 25 Ω to 50 Ω
Novel 2×, 4×, and 8× interpolator/coarse complex modulator
allows carrier placement anywhere in DAC bandwidth
Auxiliary DACs allow control of external VGA and offset control
Multiple chip synchronization interface
High performance, low noise PLL clock multiplier
Digital inverse sinc filter
100-lead, exposed paddle TQFP package
APPLICATIONS
Wireless infrastructure
WCDMA, CDMA2000, TD-SCDMA, WiMax, GSM
Digital high or low IF synthesis
Internal digital upconversion capability
Transmit diversity
Wideband communications: LMDS/MMDS, point-to-point
GENERAL DESCRIPTION
The AD9776/AD9778/AD9779 are dual, 12-/14-/16-bit, high
dynamic range, digital-to-analog converters (DACs) that pro-
vide a sample rate of 1 GSPS, permitting multicarrier generation
up to the Nyquist frequency. They include features optimized
for direct conversion transmit applications, including complex
digital modulation, and gain and offset compensation. The DAC
outputs are optimized to interface seamlessly with analog quad-
rature modulators such as the AD8349. A serial peripheral interface
(SPI) provides for programming/readback of many internal
parameters. Full-scale output current can be programmed over a
range of 10 mA to 30 mA. The devices are manufactured on an
advanced 0.18 μm CMOS process and operate on 1.8 V and
3.3 V supplies for a total power consumption of 1.0 W. They are
enclosed in 100-lead TQFP packages.
PRODUCT HIGHLIGHTS
1.
Ultralow noise and intermodulation distortion (IMD)
enable high quality synthesis of wideband signals from
baseband to high intermediate frequencies.
2.
A proprietary DAC output switching technique enhances
dynamic performance.
3.
The current outputs are easily configured for various
single-ended or differential circuit topologies.
4.
CMOS data input interface with adjustable set up and hold.
5.
Novel 2×, 4×, and 8× interpolator/coarse complex
modulator allows carrier placement anywhere in DAC
bandwidth.
TYPICAL SIGNAL CHAIN
05361-114
FPGA/ASIC/DSP
DC
COMPLEX I AND Q
DC
LO
QUADRATURE
MODULATOR/
MIXER/
AMPLIFIER
I DAC
Q DAC
DIGITAL INTERPOLATION FILTERS
AD9779
POST DAC
ANALOG FILTER
A
Figure 1.
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|---|---|
| AD9779BSVZRL1 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Dual 12-/14-/16-Bit, 1 GSPS, Digital-to-Analog Converters |
| AD9779-EB | 制造商:Analog Devices 功能描述:EVAL BOARD 16 BIT DUAL INTERPOLATION DAC - Bulk |
| AD9779-EBZ | 制造商:Analog Devices 功能描述:DUAL 16B, 1.0 GSPS TXDAC - Bulk |
| AD9779-EBZ1 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Dual 12-/14-/16-Bit, 1 GSPS, Digital-to-Analog Converters |
| AD9779PCB | 制造商:AD 制造商全稱:Analog Devices 功能描述:Dual 16-Bit, 1.0 GSPS D/A Converter |
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