TI AFE7225IRGCT

The AFE7225/7222 is an analog front end designed for full- or half-duplex wireless communications. Oversampling transmit 12-bit DACs provide output frequencies from baseband to Nyquist baseband free of inter-symbol interference. Undersampling receive 12-bit ADCs allow analog inputs from baseband to 230MHz. Most blocks within the AFE7225/7222 are independently controlled to enable optimization between power consumption and application requirements. Two spare control 12-bit DACs and a dual-input spare monitor 12-bit ADC are accessible via the serial port. Digital features include QMC (Quadrature Modulation Correction), interpolation, decimation, RMS/peak power metering, and mixers with independent NCOs for the RX and TX paths. The AFE7225/7222 is available in a 64-pin 9×9mm QFN package (RGC). The AFE7225/7222 is manufactured using a low-power CMOS process and operates over the full industrial temperature range (–40°C to 85°C).

• 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 ADCs
• 2 or 4 TX Interpolation Paths
• 2 RX Decimation Paths
• 3.0V/1.8V Low-Power Supply
• Fast Wake-Up Mode in Half-Duplex
• Coarse or Fine Digital Mixer Quadrature Modulation Correction
• Clock Input Divide/Multiply
• Serial LVDS or Interleaved Parallel CMOS Interface
• 64-Pin QFN Package (9 mm × 9 mm)

• Portable low-power wireless
• Wireless infrastructure
• Point-to-point wireless transmission
• Pico-Cell BTS