AD9761ARSRL

Digital To Analog Converters Overview

The AD9761ARSRL is a dual-channel, high-speed 10-bit CMOS digital-to-analog converter (DAC) from Analog Devices. It integrates two 40 MSPS DACs with dual 2x interpolation filters and an on-chip 1.20 V voltage reference. The device supports a single 10-bit parallel digital input bus for interleaved I and Q data streams. Operating on a single supply of 3 V to 5.5 V, it features differential current outputs with a nominal full-scale current of 10 mA. Key performance metrics include a Signal-to-Noise and Distortion Ratio (SINAD) of 59 dB and a Spurious-Free Dynamic Range (SFDR) of 71 dB at 1 MHz output.

Digital To Analog Converters Feature Summary

• Dual 10-Bit DACs with 40 MSPS update rate and 2x digital interpolation filters
• Integrated 1.20 V temperature-compensated band gap voltage reference
• Differential current outputs with excellent gain matching (0.07 dB)
• Single 10-bit parallel interface supporting interleaved I/Q data

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, an external reference must be applied to REFIO. Ensure power supply decoupling complies with the datasheet recommendations for COMP1, COMP2, and COMP3 pins to maintain specified dynamic performance.

Digital To Analog Converters Selection Notes

Select this component for applications requiring simultaneous I and Q signal generation with reduced analog reconstruction filter complexity due to the integrated 2x interpolation filters. The device accommodates both 3.3 V and 5 V logic families via the DVDD range. Note that the analog supply AVDD must remain within 3.0 V to 5.5 V for optimal linearity, while the digital supply DVDD can operate down to 2.7 V.

Digital To Analog Converters Part Context

The AD9761 belongs to the TxDAC+ family, designed specifically for transmit paths in RF systems. It pairs with companion receive ADCs such as the AD9281 and AD9201. The ARSRL suffix indicates the 28-lead Shrink Small Outline Package (SSOP) shipped in tape and reel format, distinct from the tube-packaged AD9761ARS variant.

Digital To Analog Converters Replacement Considerations

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