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Texas Instruments AFE7901 4T4R RF Sampling Analog Front End

Texas Instruments AFE7901 4T4R RF Sampling Analog Front End (AFE) is a high-performance, wide-bandwidth multi-channel transceiver integrating four RF sampling receiver chains and four RF sampling transmitter chains. With operation up to 7.4GHz, this device enables direct RF sampling in the L, S, and C-band frequency ranges. This feature is done without the need for additional frequency conversion stages. This improvement in flexibility and density enables high-channel-count, multi-mission systems.

The TX signal paths support digital up and interpolation conversion options that deliver up to 400MHz of signal bandwidth per TX path using a dual or single digital up converter. The output of the DUCs drives a 12GSPS DAC (digital-to-analog converter) with a mixed-mode output option to enhance the 2nd Nyquist operation. The DAC output of the Texas Instruments AFE7901 includes a variable gain amplifier (TX DSA) with a 40dB range and 1dB analog and 0.125dB digital steps.

Features

  • Quad RF sampling 12GSPS transmit DACs
  • Quad RF sampling 3GSPS receive ADCs
  • Maximum RF signal bandwidth per TX or RX of 400MHz
  • 5MHz to 7.4GHz RF frequency range
  • Digital step attenuators (DSA)
    • TX: 40dB range, 0.125dB steps
    • RX: 25dB range, 0.5dB steps
  • Single or dual-band DUC or DDCs for TX and RX
  • 16x NCOs per TX or RX
  • Optional Internal PLL or VCO for DAC or ADC clocks or external clock at DAC or ADC sample rate
  • Sysref Alignment Detector
  • SerDes data interface
    • JESD204B and JESD204C compatible
    • Eight SerDes transceivers up to 29.5Gbps
    • Subclass 1 multi-device synchronization
  • 17mm × 17mm FCBGA, 0.8mm pitch package

Applications

  • Radar
  • Seeker front end
  • Defense radio
  • Tactical communications infrastructure
  • Wireless communications test

Functional Block Diagram

Block Diagram - Texas Instruments AFE7901 4T4R RF Sampling Analog Front End

Related Development Tool

Texas Instruments AFE7900 Evaluation Module (EVM)

Simultaneously supports up to four transmit, four receive, and two feedback (4T4R+2FB) channels.

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Publicado: 2024-06-20 | Actualizado: 2024-06-26