AD9772AASTZ

Digital To Analog Converters Overview

The AD9772AASTZ is a single-supply, oversampling 14-bit digital-to-analog converter (DAC) optimized for baseband or IF waveform reconstruction. It integrates a 2× digital interpolation filter and an on-chip PLL clock multiplier. The device supports input data rates up to 160 MSPS with a reconstruction passband of 67.5 MHz. Key electrical parameters include a typical Spurious-Free Dynamic Range (SFDR) of 74 dBc at 25 MHz output, 73 dB image rejection, and a settling time of 11 ns. It operates on a single 3.1 V to 3.5 V supply, dissipates 253 mW nominally, and features differential current outputs in a 48-lead LQFP package.

Digital To Analog Converters Feature Summary

• 14-bit resolution with 160 MSPS maximum input data rate
• Integrated 2× FIR interpolation filter with selectable low-pass or high-pass response
• On-chip PLL clock multiplier for internal clock generation
• Zero-stuffing option for enhanced direct IF performance

Digital To Analog Converters Applications

• Communication transmit channels
• W-CDMA base stations
• Multicarrier base stations
• Direct IF synthesis
• Wideband cable systems

Digital To Analog Converters Procurement Notes

Verify the specific suffix 'ASTZ' against the manufacturer's ordering guide to confirm package type and temperature range. Ensure compatibility with the required 3.3 V supply voltage and check for moisture sensitivity handling requirements during storage and assembly.

Digital To Analog Converters Selection Notes

Select this component when high dynamic range is required for baseband or direct IF applications. The integrated 2× interpolation filter reduces analog reconstruction filter complexity. Consider the zero-stuffing feature if higher signal levels are needed for direct IF images. Ensure the design supports differential current outputs or appropriate transformer/op-amp coupling topologies.

Digital To Analog Converters Part Context

The AD9772A belongs to Analog Devices' TxDAC+ family of high-speed DACs. This series is designed for applications requiring exceptional dynamic range and flexible clocking options. The AD9772AASTZ specifically denotes the industrial temperature grade (-40°C to +85°C) version housed in the 48-lead LQFP package.

Digital To Analog Converters Replacement Considerations

Consult the official Analog Devices cross-reference tools for verified substitutes. No specific replacement part numbers are confirmed in the provided documentation.