AD9763AST

Digital To Analog Converters Overview

The AD9763AST is a dual-port, high-speed, 2-channel, 10-bit CMOS digital-to-analog converter (DAC). It integrates two TxDAC+ cores, a voltage reference, and digital interface circuitry into a 48-lead LQFP package. The device supports an update rate of up to 125 MSPS with excellent spurious-free dynamic range (SFDR) of 75 dBc at a 5 MHz output. It operates from a single supply of 3.3 V to 5 V, consuming 380 mW at 5 V. Key specifications include a typical gain matching of 0.1% and offset error better than 0.02%.

Digital To Analog Converters Feature Summary

• Dual 10-bit DACs with 125 MSPS update rate.
• On-chip 1.2 V temperature-compensated bandgap voltage reference.
• Flexible dual-port or interleaved data input modes.
• Independent or single-resistor full-scale current control.

Digital To Analog Converters Applications

• Communications base stations.
• Digital synthesis.
• Quadrature modulation.
• 3D ultrasound systems.

Digital To Analog Converters Procurement Notes

Verify the specific suffix 'AST' against the manufacturer's ordering guide to confirm the exact temperature grade and packaging configuration. Ensure compatibility with the required operating temperature range and surface-mount assembly processes for the 48-lead LQFP package.

Digital To Analog Converters Selection Notes

Select this component when a 10-bit resolution is sufficient for I/Q data processing in transmit channels. Consider the AD9765 or AD9767 if higher resolution (12-bit or 14-bit) is required, as they share pinouts and interface logic. Evaluate power consumption requirements, noting that sleep mode reduces standby dissipation.

Digital To Analog Converters Part Context

The AD9763 is part of the TxDAC+ family, which includes pin-compatible 8-, 10-, 12-, and 14-bit variants. This family is optimized for low distortion and flexible transmission of I and Q information in communication systems. The AD9763 specifically addresses applications requiring 10-bit precision at high speeds.

Digital To Analog Converters Replacement Considerations

Pin-compatible alternatives within the same series include the AD9765 (12-bit) and AD9767 (14-bit). These devices offer identical interfaces and package types but provide higher resolution. Verify that the system design can accommodate the increased bit depth without modification.