Dual, 16-Bit, 1130 MSPS, TxDAC+ Digital-to-Analog Converter Enhanced Product AD9122-EP FEATURES GENERAL DESCRIPTION Flexible LVDS interface allows word, byte, or nibble load The AD9122-EP is a dual, 16-bit, high dynamic range digital-to- Single-carrier W-CDMA ACLR = 82 dBc at 122.88 MHz IF analog converter (DAC) that provides a sample rate of 1130 MSPS, Analog output: adjustable 8.7 mA to 31.7 mA permitting multicarrier generation up to the Nyquist frequency. Integrated 1x/2/4/8 interpolator/complex modulator The AD9122-EP TxDAC+ includes features optimized for direct allows carrier placement anywhere in the DAC bandwidth conversion transmit applications, including complex digital Gain, dc offset, and phase adjustment for sideband modulation, and gain and offset compensation. The DAC outputs suppression are optimized to interface seamlessly with analog quadrature Multiple chip synchronization interfaces modulators, such as the ADL537x F-MOD series from Analog High performance, low noise PLL clock multiplier Devices, Inc. A 4-wire serial port interface provides for Digital inverse sinc filter programming/readback of many internal parameters. Full-scale Low power: 1.5 W at 1.2 GSPS, 800 mW at 500 MSPS, full output current can be programmed over a range of 8.7 mA to operating conditions 31.7 mA. The AD9122-EP comes in a 72-lead LFCSP. Additional 72-lead, exposed paddle LFCSP application and technical information can be found in the AD9122 data sheet. ENHANCED PRODUCT FEATURES PRODUCT HIGHLIGHTS Supports defense and aerospace applications (AQEC standard) 1. Ultralow noise and intermodulation distortion (IMD) Military temperature range (such as 55C to +105C) enable high quality synthesis of wideband signals from Controlled manufacturing baseline baseband to high intermediate frequencies (IF). One assembly/test site 2. Proprietary DAC output switching technique enhances One fabrication site dynamic performance. Enhanced product change notification Qualification data available on request 3. Current outputs are easily configured for various single- ended or differential circuit topologies. APPLICATIONS 4. Flexible LVDS digital interface allows the standard 32-wire bus to be reduced to one-half or one-quarter of the width. Wireless infrastructure W-CDMA, CDMA2000, TD-SCDMA, WiMAX, GSM, LTE COMPANION PRODUCTS Digital high or low IF synthesis IQ Modulators: ADL5370, ADL537x family Transmit diversity IQ Modulators with PLL and VCO: ADRF6701, ADRF670x family Wideband communications: LMDS/MMDS, point-to-point Clock Drivers: AD9516, AD951x family Voltage Regulator Design Tool: ADIsimPower Additional companion products on the AD9122 product page TYPICAL SIGNAL CHAIN COMPLEX BASEBAND COMPLEX IF RF f LO f DC IF IF 2 2/4 I DAC SIN DIGITAL ANTIALIASING BASEBAND PA AQM FILTER PROCESSOR COS 2 2/4 Q DAC LO NOTES 1. AQM = ANALOG QUADRATURE MODULATOR. Figure 1. Rev. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 www.analog.com license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. Fax: 781.461.3113 2012 Analog Devices, Inc. All rights reserved. 08281-001AD9122-EP Enhanced Product TABLE OF CONTENTS Features .............................................................................................. 1 Digital Specifications ....................................................................5 Enhanced Product Features ............................................................ 1 Digital Input Data Timing Specifications ..................................5 Applications ....................................................................................... 1 AC Specifications ..........................................................................6 General Description ......................................................................... 1 Absolute Maximum Ratings ............................................................8 Product Highlights ........................................................................... 1 Thermal Resistance .......................................................................8 Companion Products ....................................................................... 1 ESD Caution...................................................................................8 Typical Signal Chain......................................................................... 1 Pin Configuration and Function Descriptions ..............................9 Revision History ............................................................................... 2 Outline Dimensions ....................................................................... 12 Functional Block Diagram .............................................................. 3 Ordering Guide .......................................................................... 12 Specifications ..................................................................................... 4 DC Specifications ......................................................................... 4 REVISION HISTORY 8/12Revision 0: Initial Version Rev. 0 Page 2 of 12