GENERAL DESCRIPTION
The AD9144 is a quad, 16-bit, high dynamic range digital-to-analog converter (DAC) that provides a maximum sample rate of 2.8 GSPS, permitting a multicarrier generation up to the Nyquist frequency. The DAC outputs are optimized to interface seamlessly with the ADRF6720 analog quadrature modulator (AQM) from Analog Devices, Inc. An optional 3-wire or 4-wire serial port interface (SPI) provides for programming/readback of many internal parameters. Full-scale output current can be programmed over a typical range of 13.9 mA to 27.0 mA. The AD9144 is available in an 88-lead LFCSP.

FEATURES
   Supports input data rate >1 GSPS
   Proprietary low spurious and distortion design
      6-carrier GSM IMD = 77 dBc at 75 MHz IF
      SFDR = 82 dBc at dc IF, −9 dBFS
      Flexible 8-lane JESD204B interface
      Support quad or dual DAC mode at 2.8 GSPS
   Multiple chip synchronization
      Fixed latency
      Data generator latency compensation
   Selectable 1×, 2×, 4×, 8× interpolation filter
      Low power architecture
   Input signal power detection
      Emergency stop for downstream analog circuitry protection
   Transmit enable function allows extra power saving
   High performance, low noise phase-locked loop (PLL) clock
      multiplier
   Digital inverse sinc filter
   Low power: 1.6 W at 1.6 GSPS, 1.7 W at 2.0 GSPS,
      full operating conditions
   88-lead LFCSP with exposed pad

APPLICATIONS
   Wireless communications
      3G/4G W-CDMA base stations
      Wideband repeaters
      Software defined radios
   Wideband communications
      Point-to-point
      Local multipoint distribution service (LMDS) and
         multichannel multipoint distribution service (MMDS)
   Transmit diversity, multiple input/multiple output (MIMO)
   Instrumentation
   Automated test equipment