AFE7444 - Texas Instruments

AFE7444 RF-sampling AFE

The AFE7444 is a quad-channel, wideband, RFsampling analog front end (AFE) based on 14-bit, 9GSPS DACs and 14-bit, 3-GSPS ADCs. With operation at an RF of up to 6 GHz, this device enables direct RF sampling into the C-band frequency range without the need for additional frequency conversions stages. This improvement in density and flexibility enables high-ch.

Features

•1 Four, 14-bit, 9-GSPS DACs
  – Up to 800-MHz signal bandwidth
  – 1 DSA per channel tunes output power
• Four, 14-Bit, 3-GSPS ADCs
  – Up to 800-MHz signal bandwidth
  – NSD:
  –151 dBFS/Hz
  – AC performance at fIN = 2.6 GHz,
  –3 dBFS
  – SNR: 55 dBFS
  – SFDR: 73 dBc HD2 and HD3
  – SFDR: 91 dBc worst spur
  – 2 DSA per channel extends dynamic range
  – RF and digital power detectors
• RF frequency range: 10 MHz to 6 GHz
• Fast frequency hopping < 1 µs
• Receive digital signal path:
  – dual DDC per ADC
  – 3-phase coherent 32-bit NCOs per DDC
  – Decimation ratio: 3x to 32x
• Transmit digital signal path:
  – Dual DUC .