AD9761ARSZ

Digital To Analog Converters Overview

The AD9761ARSZ is a dual-channel, 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. Operating on a single supply of 3 V to 5.5 V, it features a segmented current source architecture for low glitch energy. Key specifications include a settling time of 35 ns, a signal-to-noise and distortion ratio (SNDR) of 59 dB at 1 MHz output, and a spurious-free dynamic range (SFDR) of 71 dB. 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
• Integrated 1.20 V temperature-compensated band gap voltage reference
• Low power consumption: 200 mW at 5 V supply
• Differential current outputs with excellent gain matching (0.07 dB)

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 specific ordering suffix 'ARSZ' corresponds to the standard 28-lead SSOP package with lead-free finish as per the manufacturer's guide. Confirm that the internal reference is enabled by connecting REFLO to ACOM if the integrated 1.20 V reference is required for the design.

Digital To Analog Converters Selection Notes

Select this component when a dual-channel DAC with integrated interpolation filtering is needed to reduce analog reconstruction filter complexity. Ensure the input data rate supports the 2x interpolation feature (up to 20 MSPS per channel). Verify that the 10 mA full-scale current capability and 3 V to 5.5 V supply range align with system power constraints.

Digital To Analog Converters Part Context

The AD9761 belongs to the TxDAC+ family, designed specifically for transmit paths in RF systems. It complements receive-side ADCs like the AD9281 and AD9201. The device simplifies board layout by integrating interpolation filters and references, reducing the need for external calibration circuitry due to matched channel characteristics.

Digital To Analog Converters Replacement Considerations

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