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AFE7222 Datasheet(PDF) 1 Page - Texas Instruments |
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AFE7222 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 106 page 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 – TX Path Interpolation by 2 or 4 • AFE7225 – RX Path Decimation by 2 – Dual 12-Bit 250MSPS TX DACs – 3.0V/1.8V Supplies, Low Power – Dual 12-Bit 125MSPS RX ADCs – Fast Wakeup Modes for Half-Duplex • AFE7222 – Coarse or Fine Digital Mixer – Dual 12-Bit 130MSPS TX DACs – Quadrature Modulation Corrections – Dual 12-Bit 65MSPS RX ADCs – Clock Input Divide/Multiply • OPTIONS – Serial LVDS or Interleaved Parallel CMOS – Dual 12-Bit Auxiliary DACs Interface – Dual Input 12-Bit Auxiliary ADC – 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 Copyright © 2011–2012, Texas Instruments Incorporated specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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