AD9761ARSZRL

Digital To Analog Converters Overview

The AD9761ARSZRL is a dual-channel, high-speed 10-bit CMOS digital-to-analog converter (DAC) from the TxDAC+ family. It integrates two 40 MSPS DACs with dual 2x interpolation filters and an on-chip 1.20 V band gap reference. Operating on a single supply of 3 V to 5.5 V, it features a segmented current source architecture for low glitch energy. Key performance metrics include a Signal-to-Noise and Distortion Ratio (SINAD) of 59 dB, Spurious-Free Dynamic Range (SFDR) of 71 dB, and 9.5 Effective Number of Bits (ENOB). The device consumes 200 mW at 5 V and is housed in a 28-lead SSOP package.

Digital To Analog Converters Feature Summary

• Dual 10-Bit DACs with 40 MSPS update rate and 2x digital interpolation filters
• High dynamic performance: 59 dB SINAD, 71 dB SFDR, and 9.5 ENOB
• Integrated 1.20 V temperature-compensated band gap voltage reference
• Single 10-bit parallel interface supporting interleaved I/Q data streams

Digital To Analog Converters Applications

• Wideband communication systems requiring I and Q modulation
• Spread spectrum transmit applications
• Direct conversion transmitter architectures

Digital To Analog Converters Procurement Notes

Verify the RS-28 package option and reel quantity when ordering. Confirm that the internal reference is enabled by connecting REFLO to ACOM; otherwise, connect REFLO to AVDD to disable it. Ensure power supply decoupling meets the datasheet requirements for COMP1, COMP2, and COMP3 pins to maintain specified noise performance.

Digital To Analog Converters Selection Notes

Select this component for applications needing simultaneous I/Q generation with reduced analog filter complexity due to the 2x interpolation. The full-scale output current is adjustable via an external resistor on the FSADJ pin, allowing power optimization. Verify that the input clock frequency does not exceed 40 MSPS and that the digital logic levels match the DVDD supply range.

Digital To Analog Converters Part Context

The AD9761 is part of Analog Devices' TxDAC+ series, designed specifically for transmit paths in RF systems. It pairs with companion receive ADCs such as the AD9281 and AD9201. The ARSZRL suffix indicates the 28-lead SSOP package with tape-and-reel packaging, distinct from the tube-packaged AD9761ARS.

Digital To Analog Converters Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.