DAC Module, 4 Channels; 800MHz @ 16 bits
The SMT942 is a single width expansion TIM that plugs onto an SLB base module, the SMT351T (Virtex-5 LXT or SXT FPGA) as an example and incorporates 2 Texas Instrument dual-channel Digital-to-Analog Converters (DAC5688). The SMT942 implements a comprehensive clock circuitry based on a chip (CDCE72010) from Texas instrument that allows synchronisation among the converters and the use of an external reference clock or sampling clock. It provides a complete conversion solution and stands as a platform that can be part of a transmit/receive base station.
DACs have a resolution of 16 bits and are able to update outputs at up to 800MHz. All converters are 1.8/3.3-Volt.
The Xilinx FPGA (Virtex-5 LXT or SXT series in the case of the SMT351T) on the base module is responsible for handling data coming from one of the following sources: Comports or Rocket Serial Link (RSL). These interfaces are compatible with a wide range of Sundance’s modules.
Converter configuration, sampling and transferring modes are set via internal control registers stored inside the FPGA and accessible via Comport.
The SMT942 module is well-suited for multi-carrier, wide bandwidth communication applications.s942