GENERAL DESCRIPTION
●The AD9148 is a quad, 16-bit, high dynamic range, digital-toanalog converter (DAC) that provides a sample rate of 1000 MSPS. This device includes features optimized for direct conversion transmit applications, including gain, phase, and offset compensation. The DAC outputs are optimized to interface seamlessly with analog quadrature modulators such as the ADL5371/ADL5372/ADL5373/ADL5374/ADL5375.
●FEATURES
●Single-carrier W-CDMA ACLR = 80 dBc at 150 MHz IF
●Channel-to-channel isolation > 90 dB
●Analog output
● Adjustable 8.7 mA to 31.7 mA
● RL = 25 Ω to 50 Ω
●Novel 2×, 4×, and 8× interpolator eases data interface
●On-chip fine complex NCO allows carrier placement anywhere in DAC bandwidth
●High performance, low noise PLL clock multiplier
●Multiple chip synchronization interface
●Programmable digital inverse sinc filter
●Auxiliary DACs allow for offset control
●Gain DACs allow for I and Q gain matching
●Programmable I and Q phase compensation
●Digital gain control
●Flexible LVDS digital I/F supports 32- or 16-bit bus width
●196-ball CSP_BGA, 12 mm × 12 mm
●APPLICATIONS
●Wireless infrastructure
● LTE, TD-SCDMA, WiMAX, W-CDMA, CDMA2000, GSM
●MIMO/transmit diversity
●Digital high or low IF synthesis
