The AD9785/AD9787/AD9788 are 12-bit, 14-bit, and 16-bit,high dynamic range TxDAC® devices, respectively, that provide a sample rate of 800 MSPS, permitting multicarrier generationup to the Nyquist frequency. Features are included for optimizing direct conversion transmit applications, including complexdigital modulation, as well as gain, phase, and offset compens-ation. The DAC outputs are optimized to interface seamlessly with analog quadrature modulators, such as the ADL537xfamily from Analog Devices, Inc. A serial peripheral interface(SPI) provides for programming and readback of many internal parameters. Full-scale output current can be programmed overa range of 10 mA to 30 mA. The AD978x family is manufacturedon a 0.18 μm CMOS process and operates from 1.8 V and 3.3 Vsupplies. It is enclosed in a 100-lead TQFP package.
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