DAC38RF89 - Dual-Channel, 14-Bit, 8.4-GSPS, 1x-24x Interpolating, 5 & 7.5 GHz PLL Digital-to-Analog Converte

The DAC38RF82 and DAC38RF89 are high performance, wide bandwidth RF-samplingdigital-to-analog (DACs) that are capable of dual channel input data rate up to 3.33 GSPS orsingle-channel operation with 8-bits up to 9-GSPS. The devices have a low power JESD204B Interfacewith up to 8 lanes, with a maximum bit rate of 12.5 Gbps.

In dual channel operation, the input interface is capable of data rates up to 3.33 GSPSat 12-bits and 2.5 GSPS at 16-bits resolution without interpolation. When used as a complexbaseband transmitter with interpolation modes from 2x to 24x, the DAC38RF82 or DAC38RF89 is capableof synthesizing wideband signals up to 2 GHz bandwidth with 16-bit input resolution and 2.66 GHzbandwidth with 12-bit input resolution.

The 8-bit mode allows an input at the full 9 GSPS maximum DAC sample rate and cansynthesize wideband signals from 0 to 4.5 GHz.

An optional low jitter PLL/VCO simplifies the DAC clock generation by allowing use of alower frequency reference clock. DAC38RF82 and DAC38RF89 support different VCO frequency ranges,summarized in Device Comparison Table.

• 14-Bit Resolution, 9-GSPS DAC with Multimode Operation
  • 16-Bit, Dual-Channel Data Mode
    • Max Input Rate: 2.5-GSPS
    • Wideband Digital Up-converter
      • Interpolation: 1,2,4,6,8,10,12,16,18,20,24x
  • 12-Bit, Dual-Channel Data Mode
    • Max Input Rate: 3.33-GSPS
    • Wideband Digital Up-converter
      • Interpolation: 1,2,24x
  • 8-Bit, Single-Channel Data Mode
    • Max Input Rate: 9-GSPS
• JESD204B Interface
  • Subclass 1 for Multichip Synchronization
  • Maximum Lane Rate: 12.5 Gbps
• Differential Output
  • Supports DC Coupling
  • RF Full-Scale Output Power (with 2:1 Balun):
    3 dBm at 2.14 GHz
• Internal PLL and VCO with bypass
  • DAC38RF82: f_C(VCO) = 5.9 or 8.9 GHz
  • DAC38RF89: f_C(VCO) = 5 or 7.5 GHz
• Power Supplies: -1.8 V, 1.0 V, 1.8 V
• Package: 10 x 10 mm BGA, 0.8mm Pitch,
  144-Balls

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