AFE7225 - Texas Instruments

AFE7225 Analog Front End Wideband Mixed-Signal Transceiver

The AFE7225/7222 is an analog front end designed for full- or half-duplex radios. Over-sampling transmit 12-bit DACs provide output frequencies from baseband to Nyquist. Under-sampling receive 12-bit ADCs allow analog inputs from baseband to ~230MHz. Most blocks within the AFE7225/7222 are independently controlled for optimization of power consumption versus.

Features

1
• AFE7225
  – Dual 12-Bit 250MSPS TX DACs
  – Dual 12-Bit 125MSPS RX ADCs
• AFE7222
  – Dual 12-Bit 130MSPS TX DACs
  – Dual 12-Bit 65MSPS RX ADCs
• OPTIONS
  – Dual 12-Bit Auxiliary DACs
  – Dual Input 12-Bit Auxiliary ADC
  – TX Path Interpolation by 2 or 4
  – RX Path Decimation by 2
  – 3.0V/1.8V Supplies, Low Power
  – Fast Wakeup Modes for Half-Duplex
  – Coarse or Fine Digital Mixer
  – Quadrature Modulation Corrections
  – Clock Input Divide/Multiply
  – Serial LVDS or Interleaved Parallel CMOS Interface
  – 64-Pin QFN Package (9mm × 9mm) 1.2 APPLICATIONS
• Portable, Low Power Radio
• Wireless Infrastructure
• .