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AD9831 Datasheet(PDF) 1 Page - Analog Devices |
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AD9831 Datasheet(HTML) 1 Page - Analog Devices |
1 / 16 page 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 which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. a AD9831 © Analog Devices, Inc., One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: Fax: FEATURES 3 V/5 V Power Supply 25 MHz Speed On-Chip SINE Look-Up Table On-Chip 10-Bit DAC Parallel Loading Powerdown Option 72 dB SFDR 125 mW (5 V) Power Consumption 40 mW (3 V) Power Consumption 48-Pin APPLICATIONS DDS Tuning Digital Demodulation GENERAL DESCRIPTION This DDS device is a numerically controlled oscillator employ- ing a phase accumulator, a sine look-up table and a 10-bit D/A converter integrated on a single CMOS chip. Modulation capabilities are provided for phase modulation and frequency modulation. Clock rates up to 25 MHz are supported. Frequency accuracy can be controlled to one part in 4 billion. Modulation is effected by loading registers through the parallel microprocessor interface. A powerdown pin allows external control of a powerdown mode. The part is available in a 48-pin package. FUNCTIONAL BLOCK DIAGRAM RESET SLEEP IOUT COMP REFIN FS ADJUST REFOUT AGND AVDD DGND DVDD MCLK D0 FSELECT D15 WR A0 A1 A2 PSEL0 PSEL1 12 Σ AD9831 ON-BOARD REFERENCE 10-BIT DAC PHASE0 REG PHASE1 REG PHASE2 REG PHASE3 REG TRANSFER CONTROL MPU INTERFACE FULL-SCALE CONTROL SIN ROM PHASE ACCUMULATOR (32-BIT) MUX FREQ0 REG FREQ1 REG MUX PARALLEL REGISTER REV. B DIRECT DIGITAL SYNTHESIZER, WAVEFORM GENERATOR 2011 781.329.4700 781.461.3113 Similar DDS products can be found at http://www.analog.com/DDS. LQFP LQFP |
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