AD9779

PRODUCTION

Dual 16-Bit, 1 GSPS, Digital-to-Analog Converter

Data Sheet (Rev. A) Product Selection Table

Part Models: 2
1ku List Price: Starting From $38.76

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Overview

Low power: 1.0 W @ 1 GSPS, 600 mW @ 500 MSPS, full operating conditions
SFDR = 78 dBc to f_OUT = 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

The AD9776/AD9778/AD9779 are dual, 12-/14-/16-bit, high dynamic range, digital-to-analog converters (DACs) that provide 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

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 modulator 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. A, 3/07

Part Models: 2
1ku List Price: Starting From $38.76

Documentation

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
AD9779BSVZ	100-Lead TQFP (14mm x 14mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
AD9779BSVZRL	100-Lead TQFP (14mm x 14mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Mar 7, 2012 - 11_0074 Addition of ASE, Shanghai as an Alternative Assembly Source for Select LQFP and TQFP-EP Packages
		PCN11_0074_Form Material_Report Detailed Change Description Detailed Change Description Qualification Report Summary
AD9779BSVZ	PRODUCTION
AD9779BSVZRL	PRODUCTION
Jun 16, 2009 - 09_0027 Conversion to Laser Mark for the LQFP Packages (Single Grades)
		adi48lqfp Form Material_Report
AD9779BSVZ	PRODUCTION
AD9779BSVZRL	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
AD9779A	PRODUCTION	Dual, 16-Bit, 1 GSPS, Digital-to-Analog Converter

Tools & Simulations

IBIS Model 1

AD9779 IBIS Models

Evaluation Kits

AD-DAC-FMC-ADP

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Product Details

The AD-DAC-FMC-ADP adapter board allows any of Analog Devices' DPG2-compatiable High-Speed DAC Evaluation Boards to be used on a Xilinx^® evaluation board with a FMC connector. The adapter board uses the Low Pin Count (LPC) version of the FMC connector, so it can be used on either LPC or HPC hosts (such as the ML605 or SP605).

For a list of compatible evaluation boards, please see the "DPG2" information on our Data Pattern Generator (DPG) High-Speed DAC Evaluation Platform page.

Resources

Download: Quick Start Guide, Schematics, Layouts, and User Constraint Files
1/1/0001

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