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AD9146-M5375-EBZ Arkusz danych(PDF) 1 Page - Analog Devices |
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AD9146-M5375-EBZ Arkusz danych(HTML) 1 Page - Analog Devices |
1 / 52 page Dual, 16-Bit, 1230 MSPS, TxDAC+ Digital-to-Analog Converter AD9146 Rev. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother 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 ©2011 Analog Devices, Inc. All rights reserved. FEATURES Flexible LVDS interface allows byte or nibble load Single-carrier W-CDMA ACLR = 80 dBc at 122.88 MHz IF Analog output: adjustable 8.7 mA to 31.7 mA, RL = 25 Ω to 50 Ω Integrated 2×/4× 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: 1.2 W at 1.0 GSPS, 800 mW at 500 MSPS, full operating conditions 48-lead, exposed paddle LFCSP 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 AD9146 is a dual, 16-bit, high dynamic range digital-to- analog converter (DAC) that provides a sample rate of 1230 MSPS, permitting multicarrier generation up to the Nyquist frequency. The AD9146 TxDAC+® includes features optimized for direct conversion transmit applications, including complex digital mod- ulation, 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 3-wire serial port interface provides for program- ming/readback of many internal parameters. Full-scale output current can be programmed over a range of 8.7 mA to 31.7 mA. The AD9146 comes in a 48-lead LFCSP. 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. Compact LVDS digital interface offers reduced width data bus. 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 AD9146 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 2/4 SINC–1 2/4 SINC–1 ANTIALIASING FILTER AQM LO OFFSET AND GAIN ADJ OFFSET AND GAIN ADJ Figure 1. |
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