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