Analog Devices Inc. AD9772AASTZ

The AD9772A, part number AD9772AASTZ, is a single-supply, oversampling, 14-bit digital-to-analog converter (DAC) produced by Analog Devices Inc. This component is optimized for baseband or IF waveform reconstruction applications that require exceptional dynamic range. Manufactured on an advanced CMOS process, it integrates a complete, low distortion 14-bit DAC with a 2× digital interpolation filter and clock multiplier. The on-chip PLL clock multiplier provides all the necessary clocks for the digital filter and the 14-bit DAC, ensuring optimal performance in various applications.

• Single-supply, oversampling, 14-bit digital-to-analog converter (DAC) with a 2× digital interpolation filter and clock multiplier.
• On-chip PLL clock multiplier provides all necessary clocks for the digital filter and the 14-bit DAC.
• Flexible differential clock input allows for single-ended or differential clock drivers for optimum jitter performance.
• Supports baseband and direct IF applications with configurable low-pass or high-pass filter responses.
• Zero-stuffing option enhances direct IF applications by upscaling data rate by a factor of 2.
• Segmented current source architecture and proprietary switching technique to reduce spurious components and enhance dynamic performance.
• Differential current outputs support differential or single-ended applications.
• On-chip band gap reference and control amplifier for maximum accuracy and flexibility.
• Full-scale current adjustable over a 2 mA to 20 mA range for additional gain-ranging capabilities.

The AD9772A is optimized for various applications requiring high dynamic range and precise waveform reconstruction, including:

• Baseband waveform reconstruction in communication systems.
• Direct IF (Intermediate Frequency) waveform reconstruction in communication systems.
• High-performance data acquisition and signal processing systems.
• Wireless communication systems, such as cellular base stations and satellite communications.
• Medical imaging and diagnostic equipment.

1. What is the conversion rate of the AD9772A?

   The AD9772A has a conversion rate of 160 MSPS (Mega Samples Per Second).

2. What type of interface does the AD9772A use?

   The AD9772A uses a parallel interface.

3. What is the integral nonlinearity (INL) of the AD9772A?

   The integral nonlinearity (INL) of the AD9772A is 3.5 LSB (Least Significant Bits).

4. What is the operating temperature range of the AD9772A?

   The AD9772A operates over an industrial temperature range of –40°C to +85°C.

5. What package type is the AD9772A available in?

   The AD9772A is available in a 48-lead LQFP (Low Quad Flat Package) package.

6. Can the AD9772A be used for both baseband and direct IF applications?

   Yes, the AD9772A can be configured for both baseband and direct IF waveform reconstruction applications.

7. How does the AD9772A enhance dynamic performance?

   The AD9772A enhances dynamic performance through a segmented current source architecture and a proprietary switching technique to reduce spurious components.

8. Can the full-scale current of the AD9772A be adjusted?

   Yes, the full-scale current of the AD9772A can be adjusted over a range of 2 mA to 20 mA.

9. What is the purpose of the on-chip PLL clock multiplier in the AD9772A?

   The on-chip PLL clock multiplier provides all the necessary clocks for the digital filter and the 14-bit DAC.

10. How does the zero-stuffing option in the AD9772A enhance direct IF applications?

    The zero-stuffing option enhances direct IF applications by upscaling the data rate by a factor of 2, increasing the signal level and pass-band flatness of higher IF images.