AD9778ABSVZ

Digital To Analog Converters Overview

The AD9778ABSVZ is a dual-channel, 14-bit digital-to-analog converter (DAC) from Analog Devices, operating at a maximum sample rate of 1 GSPS. It utilizes a 0.18 μm CMOS process and requires 1.8 V and 3.3 V supplies, consuming approximately 1.0 W at full speed. The device features adjustable full-scale output currents ranging from 8.7 mA to 31.7 mA with an internal reference voltage of 1.2 V. Key performance metrics include a differential nonlinearity (DNL) of ±0.65 LSB and integral nonlinearity (INL) of ±1.5 LSB. It is housed in a 100-lead exposed paddle TQFP package.

Digital To Analog Converters Feature Summary

• Dual 14-bit DAC architecture with 1 GSPS sampling rate
• Integrated 2×, 4×, and 8× interpolator/coarse complex modulator
• Internal 1.2 V reference with programmable full-scale current (8.7 mA to 31.7 mA)
• Digital inverse sinc filter and auxiliary DACs for external VGA/offset control

Digital To Analog Converters Applications

• Wireless infrastructure (W-CDMA, CDMA2000, TD-SCDMA, WiMax, GSM, LTE)
• Digital high or low IF synthesis
• Transmit diversity systems
• Wideband communications (LMDS/MMDS, point-to-point)

Digital To Analog Converters Procurement Notes

Verify the specific suffix 'BSVZ' against the manufacturer's official ordering guide to confirm package type and tape/reel specifications. Ensure compatibility with the required 100-lead TQFP footprint and thermal pad soldering requirements for optimal heat dissipation.

Digital To Analog Converters Selection Notes

Select this component when a dual-channel solution with 14-bit resolution and 1 GSPS throughput is required. Consider the integrated interpolation filters and complex modulation capabilities if direct digital upconversion is needed. Verify that the system can support the 1.0 W power consumption at maximum data rates.

Digital To Analog Converters Part Context

This part belongs to the AD9776A/AD9778A/AD9779A family, which shares identical pinouts and functional blocks but differs in resolution (12-bit, 14-bit, and 16-bit respectively). The AD9778A specifically targets applications requiring a balance between dynamic range and bandwidth.

Digital To Analog Converters Replacement Considerations

The AD9776ABSVZ and AD9779ABSVZ are pin-compatible alternatives within the same datasheet offering different resolutions (12-bit and 16-bit). Cross-model substitution requires verification of resolution-specific linearity and dynamic performance requirements.