AD9783BCPZ

Digital To Analog Converters Overview

The AD9783BCPZ is a dual, high dynamic range digital-to-analog converter (DAC) featuring 16-bit resolution and a maximum sample rate of 500 MSPS. It utilizes an LVDS interface with support for dual-port or interleaved single-port operation. The device incorporates a proprietary switching output architecture that enables analog synthesis above the Nyquist frequency by shifting energy to image frequencies. Key features include programmable full-scale current outputs ranging from 8.6 mA to 31.7 mA, auxiliary 10-bit current DACs for external offset nulling, and an internal 1.2 V precision reference. It operates from 1.8 V and 3.3 V supplies, consuming approximately 315 mW at maximum rates.

Digital To Analog Converters Feature Summary

• Dual 16-bit DACs with 500 MSPS maximum sampling rate
• LVDS digital interface supporting dual-port or interleaved single-port modes
• Proprietary switching output stage for Nyquist zone synthesis
• Programmable main DAC outputs (8.6 mA to 31.7 mA) and auxiliary offset DACs

Digital To Analog Converters Applications

• Wireless infrastructure including W-CDMA, CDMA2000, TD-SCDMA, and WiMAX
• Wideband communications such as LMDS/MMDS and point-to-point links
• RF signal generators and arbitrary waveform generators

Digital To Analog Converters Procurement Notes

Verify the specific suffix against the manufacturer's ordering guide to confirm package type and temperature range. Ensure compatibility with the required 1.8 V and 3.3 V supply rails during system design. Confirm pin-out alignment if substituting within the AD9780/AD9781/AD9783 family, as they are pin-compatible but differ in resolution.

Digital To Analog Converters Selection Notes

Select the AD9783BCPZ when 16-bit resolution is required for high linearity applications. Compare SFDR and IMD specifications against system requirements, particularly for mix mode operations above Nyquist. Evaluate power consumption constraints, as the device draws significant current at 500 MSPS. Consider the need for external offset compensation if the internal auxiliary DACs are insufficient for the application's accuracy needs.

Digital To Analog Converters Part Context

The AD9783BCPZ belongs to the AD978x family, which includes pin-compatible variants with different resolutions: the AD9780 (12-bit) and AD9781 (14-bit). All three devices share the same 72-lead LFCSP package and functional block diagram structure, differing primarily in the number of data input pins and internal DAC resolution. This family is designed for direct conversion transmit applications interfacing with analog quadrature modulators.

Digital To Analog Converters Replacement Considerations

The AD9780BCPZ and AD9781BCPZ are pin-compatible replacements offering lower resolutions (12-bit and 14-bit, respectively). Verify that the reduced resolution meets the system's dynamic range requirements before substitution.