AD9762AR

Digital To Analog Converters Overview

The AD9762AR is a 12-bit, 125 MSPS TxDAC digital-to-analog converter manufactured by Analog Devices Inc. It features a segmented current source architecture with proprietary switching techniques to enhance dynamic performance. The device operates on a single supply voltage ranging from 2.7 V to 5.5 V and includes an on-chip 1.20 V temperature-compensated bandgap reference. Key electrical specifications include a maximum update rate of 125 MSPS, a settling time of 35 ns (to 0.1%), and a full-scale output current adjustable between 2 mA and 20 mA. Power dissipation is 175 mW at 5 V with a 20 mA output, reducible to 45 mW at 3 V.

Digital To Analog Converters Feature Summary

• 12-Bit Resolution with 125 MSPS Update Rate
• Differential Current Outputs: 2 mA to 20 mA Adjustable
• On-Chip 1.20 V Reference and Edge-Triggered Latches
• SFDR to Nyquist @ 5 MHz Output: 70 dBc

Digital To Analog Converters Applications

• Communication Transmit Channel Basestations
• ADSL/HFC Modems
• Direct Digital Synthesis (DDS)
• Instrumentation

Digital To Analog Converters Procurement Notes

Verify the package option R-28 (28-Lead SOIC) matches the target PCB footprint. Confirm that the operating temperature range of -40°C to +85°C meets system requirements. Ensure power supply decoupling capacitors are placed near AVDD and DVDD pins as specified in the datasheet layout guidelines.

Digital To Analog Converters Selection Notes

Select this component for applications requiring high-speed conversion with low power consumption. The wide full-scale current adjustment allows optimization for either lower power or higher gain needs. Verify compatibility with +3 V and +5 V CMOS logic families via the edge-triggered input latches.

Digital To Analog Converters Part Context

The AD9762AR belongs to the TxDAC product family, which includes pin-compatible 8-, 10-, 12-, and 14-bit DACs. This family is optimized for communication transmit signal paths, allowing designers to scale resolution and performance up or down while maintaining the same interface options and package pinout.

Digital To Analog Converters Replacement Considerations

Pin-compatible alternatives within the TxDAC family include the AD9752 (12-bit), AD9764 (14-bit), and other members of the series. These share the same package and pinout but offer different resolutions and performance characteristics.