Dual 14-Bit, 1 GSPS, Digital-to-Analog Converter

The AD9776A AD9778A AD9779A are dual, 12-/14-/16-bit, high dynamic range, digital-to-analog converters (DACs) that provide a sample rate of 1 GSPS, permitting a 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 quadrature Modulators such as the ADL537x FMOD series from Analog Devices, Inc. A serial peripheral Interface (SPI) pro-vides 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 m 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 a 100-lead TQFP.
Product Highlights Ultralow noise and intermodulation distortion (IMD) enable high quality synthesis of wideband signals from baseband to high intermediate frequencies. A proprietary DAC output switching technique enhances dynamic performance. The current outputs are easily configured for various single-ended or differential circuit topologies. CMOS data input Interface with adjustable set up and hold. Novel 2, 4, and 8 interpolator/coarse complex modula-tor allows Carrier placement anywhere in DAC bandwidth.
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
Data Sheet, Rev. 0, 8/07
By Analog Devices, Inc.
AD9778A 's PackagesAD9778A 's pdf datasheet
AD80164ABSVZ TQFP
AD9778A-EBZ
AD9778ABSVZ TQFP
AD9778ABSVZRL TQFP




AD9778A Pinout, Pinouts
AD9778A pinout,Pin out
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