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AD9951 データシート(PDF) 1 Page - Analog Devices |
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AD9951 データシート(HTML) 1 Page - Analog Devices |
1 / 28 page 400 MSPS 14-Bit, 1.8 V CMOS Direct Digital Synthesizer AD9951 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 rights of third parties that may result from its use. Specifications subject to change without notice. No 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. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.326.8703 © 2003 Analog Devices, Inc. All rights reserved. FEATURES 400 MSPS internal clock speed Integrated 14-bit DAC 32-bit tuning word Phase noise ≤ –120 dBc/Hz @ 1 kHz offset (DAC output) Excellent dynamic performance >80 dB SFDR @ 160 MHz (±100 kHz offset) AOUT Serial I/O control 1.8 V power supply Software and hardware controlled power-down 48-lead TQFP/EP package Support for 5 V input levels on most digital inputs PLL REFCLK multiplier (4× to 20×) Internal oscillator, can be driven by a single crystal Phase modulation capability Multichip synchronization APPLICATIONS Agile LO frequency synthesis Programmable clock generators Test and measurement equipment Acousto-optic device drivers FUNCTIONAL BLOCK DIAGRAM COS(X) CONTROL REGISTERS OSCILLATOR/BUFFER SYNC ENABLE I/O UPDATE DAC_RSET DDS CORE PHASE OFFSET PHASE ACCUMULATOR Z–1 Z–1 IOUT IOUT OSK PWRDWNCTL REFCLK REFCLK CRYSTAL OUT I/O PORT PS<1:0> DAC SYSTEM CLOCK SYSTEM CLOCK SYNC_IN SYNC_CLK RESET TIMING AND CONTROL LOGIC 4 ×–20× CLOCK MULTIPLIER ÷ 4 AD9951 32 32 14 14 19 14 0 M U X M U X Figure 1. |
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