AD9776ABSVZ

Digital To Analog Converters Overview

The AD9776ABSVZ is a dual-channel, 12-bit digital-to-analog converter (DAC) operating at a sample rate of 1 GSPS. It features an internal reference voltage of 1.2 V and supports analog supply voltages between 3.13 V and 3.47 V, with digital supplies ranging from 1.70 V to 2.05 V. The device utilizes a parallel data interface and delivers differential current outputs. Key performance metrics include a typical Differential Nonlinearity (DNL) of ±0.1 LSB and Integral Nonlinearity (INL) of ±0.86 LSB. Power consumption reaches 1.0 W at full speed, housed in a 100-lead TQFP package.

Digital To Analog Converters Feature Summary

• Dual-channel architecture with 12-bit resolution and 1 GSPS maximum sampling rate
• Integrated 2×, 4×, and 8× interpolator/coarse complex modulator for flexible carrier placement
• Internal 1.2 V reference with programmable full-scale output current range of 8.7 mA to 31.7 mA
• Digital inverse sinc filter and auxiliary DACs for gain/offset compensation

Digital To Analog Converters Applications

• Wireless infrastructure base stations
• W-CDMA, CDMA2000, TD-SCDMA, WiMax, GSM, LTE transmitters
• Digital high or low IF synthesis
• Transmit diversity systems

Digital To Analog Converters Procurement Notes

Verify the specific suffix 'B' against the official Analog Devices ordering guide to confirm temperature grade and packaging variations. Ensure compatibility with the 100-lead TQFP-EP footprint during PCB layout. Confirm that the required interpolation mode aligns with the available clock frequencies and power budget constraints defined in the datasheet specifications.

Digital To Analog Converters Selection Notes

Select this component when dual-channel I/Q modulation is required at high speeds. Compare DNL/INL specifications against system linearity requirements. Evaluate power dissipation capabilities, as the device consumes up to 1.0 W at 1 GSPS. Ensure the host processor can drive the parallel data inputs within the specified setup and hold times relative to the DATACLK signal.

Digital To Analog Converters Part Context

This part belongs to the AD9776A/AD9778A/AD9779A family, differentiated primarily by resolution: 12-bit, 14-bit, and 16-bit respectively. All variants share identical pinouts, interfaces, and core architectures. The 'A' designation indicates the enhanced version with improved dynamic performance over earlier generations. The 'BSVZRL' suffix typically denotes a specific reel quantity and lead-free status.

Digital To Analog Converters Replacement Considerations

The AD9778A and AD9779A are pin-compatible alternatives offering higher resolutions (14-bit and 16-bit). Verify if the increased resolution meets system needs without exceeding power budgets. No direct lower-resolution replacements are documented in the same series.