AFE7225 Dual-Channel, 12-Bit, 125-MSPS ADC & Dual-Channel 12-Bit 250-MSPS DAC With Auxiliary ADC and DACs | TI.com

AFE7225
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Dual-Channel, 12-Bit, 125-MSPS ADC & Dual-Channel 12-Bit 250-MSPS DAC With Auxiliary ADC and DACs

 

Description

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 utilization. Two auxiliary control 12-bit DACs and a dual input auxiliary monitoring 12-bit ADC are available via serial interface. Digital features include QMC (quadrature modulation correction), interpolation, decimation, RMS/peak power meter and mixers with independent NCOs for RX and TX path.

The AFE7225/7222 is available in a 64-pin 9x9mm QFN package (RGC). The AFE7225/7222 is built on Texas Instrument’s low power analog CMOS process and is specified over the full industrial temperature range (–40°C to 85°C).

Features

  • 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)

Parametrics

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Part number Order Sample rate (Max) (MSPS) Features Resolution (Bits) Number of input channels SNR (dB) ENOB (Bits) SFDR (dB) Power consumption (Typ) (mW) Input range (Vp-p) Interface Operating temperature range (C) Analog input BW (MHz) Input buffer Package Group Package size: mm2:W x L (PKG) Rating
AFE7225 Order now 125
250    
Auxiliary ADC/DACs
CMOS Interface
Decimation
Serial LVDS Interface    
12     2     70.7     9.8     84     362     2     Parallel CMOS
Serial LVDS    
-40 to 85     230     Yes     VQFN | 64     64VQFN: 81 mm2: 9 x 9 (VQFN | 64)     Catalog    
AFE7222 Order now 65
130    
Auxiliary ADC/DACs
CMOS Interface
Decimation
Serial LVDS Interface    
12     2     70.5     9.8     85     362     2     Parallel CMOS
Serial LVDS    
-40 to 85     230     Yes     VQFN | 64     64VQFN: 81 mm2: 9 x 9 (VQFN | 64)     Catalog