AD9779ABSVZ

AD9779A is a 16bit, high dynamic range digital-to-analogue converter (DAC) that provide a sample rate of 1 GSPS, permitting a multicarrier generation up to the Nyquist frequency. This include features optimized for direct conversion transmission applications, including complex digital modulation and gain and offset compensation. The DAC outputs are optimized to interface seamlessly with analogue quadrature modulators such as the ADL537x FMOD series from Analog Devices, Inc. A 3-wireinterface provides for programming/readback of many internal parameters. Application includes wireless infrastructure, W-CDMA, CDMA2000, TD-SCDMA, WiMAX, GSM, LTE, digital high or low IF synthesis, internal digital up conversion capability, transmit diversity, wideband communications: LMDS/MMDS, point-to-point.

• Low power: 1.0W at 1 GSPS, 600mW at 500 MSPS, full operating conditions
• Single carrier W-CDMA ACLR = 80dBc at 80MHz IF
• Analog output: adjustable 8.7mA to 31.7mA, RL = 25 to 50 ohm
• Novel 2×, 4×, and 8× interpolator/coarse complex modulator
• Allows carrier placement anywhere in DAC bandwidth
• Auxiliary DACs allow control of external VGA and offset control
• Multiple chip synchronization interface
• High performance, low noise PLL clock multiplier
• Digital inverse sinc filter
• 100 lead TQFP-EP package, operating temperature range from -40°C to +85°C

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