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AD9122-EP Arkusz danych(PDF) 1 Page - Analog Devices |
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AD9122-EP Arkusz danych(HTML) 1 Page - Analog Devices |
1 / 12 page Dual, 16-Bit, 1130 MSPS, TxDAC+ Digital-to-Analog Converter Enhanced Product AD9122-EP Rev. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2012 Analog Devices, Inc. All rights reserved. FEATURES Flexible LVDS interface allows word, byte, or nibble load Single-carrier W-CDMA ACLR = 82 dBc at 122.88 MHz IF Analog output: adjustable 8.7 mA to 31.7 mA Integrated 1x/2×/4×/8× interpolator/complex modulator allows carrier placement anywhere in the DAC bandwidth Gain, dc offset, and phase adjustment for sideband suppression Multiple chip synchronization interfaces High performance, low noise PLL clock multiplier Digital inverse sinc filter Low power: 1.5 W at 1.2 GSPS, 800 mW at 500 MSPS, full operating conditions 72-lead, exposed paddle LFCSP ENHANCED PRODUCT FEATURES Supports defense and aerospace applications (AQEC standard) Military temperature range (such as −55°C to +105°C) Controlled manufacturing baseline One assembly/test site One fabrication site Enhanced product change notification Qualification data available on request APPLICATIONS Wireless infrastructure W-CDMA, CDMA2000, TD-SCDMA, WiMAX, GSM, LTE Digital high or low IF synthesis Transmit diversity Wideband communications: LMDS/MMDS, point-to-point GENERAL DESCRIPTION The AD9122-EP is a dual, 16-bit, high dynamic range digital-to- analog converter (DAC) that provides a sample rate of 1130 MSPS, permitting multicarrier generation up to the Nyquist frequency. The AD9122-EP TxDAC+® includes features optimized for direct conversion transmit applications, including complex digital modulation, and gain and offset compensation. The DAC outputs are optimized to interface seamlessly with analog quadrature modulators, such as the ADL537x F-MOD series from Analog Devices, Inc. A 4-wire serial port interface provides for programming/readback of many internal parameters. Full-scale output current can be programmed over a range of 8.7 mA to 31.7 mA. The AD9122-EP comes in a 72-lead LFCSP. Additional application and technical information can be found in the AD9122 data sheet. PRODUCT HIGHLIGHTS 1. Ultralow noise and intermodulation distortion (IMD) enable high quality synthesis of wideband signals from baseband to high intermediate frequencies (IF). 2. Proprietary DAC output switching technique enhances dynamic performance. 3. Current outputs are easily configured for various single- ended or differential circuit topologies. 4. Flexible LVDS digital interface allows the standard 32-wire bus to be reduced to one-half or one-quarter of the width. COMPANION PRODUCTS IQ Modulators: ADL5370, ADL537x family IQ Modulators with PLL and VCO: ADRF6701, ADRF670x family Clock Drivers: AD9516, AD951x family Voltage Regulator Design Tool: ADIsimPower Additional companion products on the AD9122 product page TYPICAL SIGNAL CHAIN NOTES 1. AQM = ANALOG QUADRATURE MODULATOR. COMPLEX BASEBAND DC COMPLEX IF fIF RF LO – fIF DIGITAL BASEBAND PROCESSOR PA I DAC Q DAC 2 2 2/4 2/4 ANTIALIASING FILTER AQM LO SIN COS Figure 1. |
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