AD9778BSVZRL

Digital To Analog Converters Overview

The AD9778BSVZRL is a dual-channel, 14-bit digital-to-analog converter (DAC) from Analog Devices, operating at sample rates up to 1 GSPS. It features an internal reference voltage and supports parallel data interfaces with CMOS logic levels. The device consumes approximately 300 mW at 100 MSPS and up to 980 mW at 1 GSPS in 8× interpolation mode. It operates on 3.3 V analog/digital supplies and 1.8 V clock/digital supplies within specified ranges of 3.13 V to 3.47 V and 1.70 V to 1.90 V, respectively. Encased in a 100-lead TQFP package with an exposed paddle, it provides differential current outputs for I/Q signal generation.

Digital To Analog Converters Feature Summary

• Dual 14-bit DAC architecture with 1 GSPS maximum sampling rate
• Integrated 2x, 4x, and 8x interpolator/coarse complex modulator
• Internal 1.2 V voltage reference with 5 kΩ output resistance
• Programmable full-scale output current ranging from 8.66 mA to 31.66 mA

Digital To Analog Converters Applications

• Wireless infrastructure base stations
• WCDMA, CDMA2000, TD-SCDMA, WiMax, and GSM transmitters
• Digital high or low IF synthesis systems
• Transmit diversity applications

Digital To Analog Converters Procurement Notes

Verify the component authenticity through official Analog Devices channels or authorized distributors. Confirm that the 100-lead TQEP package matches the design footprint requirements. Ensure supply voltages adhere to the specified 3.3 V and 1.8 V rails to maintain performance within the -40°C to +85°C operating temperature range.

Digital To Analog Converters Selection Notes

Select the AD9778BSVZRL when a 14-bit resolution is required for dual-channel applications. Compare against the AD9776 (12-bit) and AD9779 (16-bit) variants if resolution needs differ. Ensure the system can accommodate the 100-lead TQFP package size and thermal dissipation requirements, particularly at higher interpolation factors where power consumption increases significantly.

Digital To Analog Converters Part Context

This component belongs to the AD9776/AD9778/AD9779 family of high-performance DACs manufactured on a 0.18 μm CMOS process. The 'B' suffix typically denotes specific binning or testing criteria, while 'SVZ' indicates the 100-lead TQFP package with RoHS compliance. The 'RL' suffix signifies reel packaging for automated assembly.

Digital To Analog Converters Replacement Considerations

The AD9776ABSVZRL and AD9779ABSVZRL are pin-compatible alternatives within the same datasheet family, offering 12-bit and 16-bit resolutions respectively. Verify that the specific resolution and dynamic performance metrics of the substitute meet the application requirements before swapping.