AD9779BSVZRL

Digital To Analog Converters Overview

The AD9779BSVZRL is a dual-channel, 16-bit digital-to-analog converter (DAC) from Analog Devices, operating at sample rates up to 1 GSPS. It integrates two high-performance DAC cores with an internal reference voltage source and digital interface circuits within a 100-lead exposed paddle TQFP package. The device supports CMOS data inputs and features adjustable full-scale output currents ranging from 8.7 mA to 31.7 mA. Key specifications include a typical Spurious Free Dynamic Range (SFDR) of 78 dBc at 100 MHz output frequency and power consumption of 1.0 W at maximum sampling rate. It operates on 1.8 V and 3.3 V supplies.

Digital To Analog Converters Feature Summary

• Dual 16-bit DACs with 1 GSPS maximum update rate
• Integrated 2x, 4x, and 8x interpolator/coarse complex modulator
• Internal 1.2 V reference voltage source
• Adjustable full-scale output current (8.7 mA to 31.7 mA)
• Auxiliary DACs for external VGA and offset control

Digital To Analog Converters Applications

• Wireless infrastructure base stations
• WCDMA, CDMA2000, TD-SCDMA, WiMax, GSM transmitters
• Digital high or low IF synthesis
• Wideband communications (LMDS/MMDS, point-to-point)

Digital To Analog Converters Procurement Notes

Verify the specific suffix 'BSVZRL' against the manufacturer's official ordering guide to confirm package type, temperature range, and reel packaging details. Ensure compatibility with the 100-lead TQFP footprint and thermal requirements for the exposed paddle design during procurement planning.

Digital To Analog Converters Selection Notes

Select this component when 16-bit resolution and 1 GSPS speed are required for direct conversion transmit applications. Compare against AD9776A (12-bit) and AD9778A (14-bit) if lower resolution suffices. Verify that the system can support the 1.0 W power dissipation and provides adequate heat sinking for the TQFP_EP package.

Digital To Analog Converters Part Context

This part belongs to the AD9776/AD9778/AD9779 family of dual high-speed DACs. While pin-compatible across the family, the AD9779 variant specifically offers 16-bit resolution, distinguishing it from the 12-bit AD9776 and 14-bit AD9778 models which share similar architectural features and package options.

Digital To Analog Converters Replacement Considerations

The AD9778ABSVZRL and AD9776ABSVZRL are pin-compatible members of the same family offering 14-bit and 12-bit resolutions respectively. Direct substitution requires verifying that the reduced resolution meets the system's dynamic range requirements.