AD9772AASTZ

AD9772A is a single-supply, oversampling, 14bit digital to-analogue converter (DAC) optimized for baseband or IF waveform reconstruction applications requiring exceptional dynamic range. Manufactured on an advanced CMOS process, it integrates a complete, low distortion 14bit 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 14bit DAC. A flexible differential clock input allows for a single-ended or differential clock driver for optimum jitter performance. For baseband applications, the 2× digital interpolation filter provides a low-pass response, thus providing as much as a threefold reduction in the complexity of the analogue reconstruction filter. Application includes communication transmit channel, W-CDMA base stations, multicarrier base stations, direct IF synthesis, wideband cable systems, instrumentation.

• Single 3.1V to 3.5V supply range
• 14bit DAC resolution and input data width
• 160MSPS input data rate, 67.5MHz reconstruction pass band at 160MSPS
• Spurious-free dynamic range to Nyquist (fOUT = 0 dBFS) is 82dBc (typ)
• 2× interpolation filter with high- or low-pass response
• 73dB image rejection with 0.005dB pass-band ripple
• Zero-stuffing option for enhanced direct IF performance
• Internal 2×/4× clock multiplier
• 250mW power dissipation, 13mW with power-down mode
• 48 lead LQFP package, operating temperature range from -40°C to +85°C

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