AFE7222_14 Datasheet, PDF (1/107 Pages) Texas Instruments – Analog Front End Wideband Mixed-Signal Transceiver

AFE7222
AFE7225
www.ti.com
SLOS711B – NOVEMBER 2011 – REVISED MARCH 2012
Analog Front End Wideband Mixed-Signal Transceiver
Check for Samples: AFE7222, AFE7225
1 INTRODUCTION
1.1 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
• Point-to-Point Radio
• Pico-Cell BTS
1.3 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).
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date. Products conform to
specifications per the terms of the Texas Instruments standard warranty. Production
processing does not necessarily include testing of all parameters.
Copyright © 2011–2012, Texas Instruments Incorporated