Functional block diagram. Information furnished by Analog Devices is believed to be accurate. Guaranteed by design, but not production tested

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a Complete DDSCMOS

AD9830

              FEATURES                                                                                                                         GENERAL DESCRIPTION

+5 V Pow er S upply                                                    This DDS device is a numerically controlled oscillator em50 MHz S peed                                                                      ploying a phase accumulator, a sine look-up table and a

On-C hip S INE L ook-Up Table 10-bit D/A converter integrated on a single CMOS chip. On-C hip 10-Bit DAC Modulation capabilities are provided for phase modulation

Parallel L oading                                                                                                            and frequency modulation.

Pow er-Dow n Option                                                 Clock rates up to 50 MHz are supported.  Frequency accu72 dB S FDR                                                                      racy can be controlled to one part in 4 billion. Modulation

250 m W Pow er C onsum ption                              is effected by loading registers through the parallel micro48-Pin TQFP                                                                                                                    processor interface.

APPL IC ATIONS                                                          A power-down pin allows external control of a power-down

DDS Tuning                                                                              mode. The part is available in a 48-pin TQFP package.

Dig ital Dem odulation

FUNCTIONAL BLOCK DIAGRAM

REV. A

Information furnished by Analog Devices is believed to be accurate and © Analog Devices, Inc., 1996 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 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106,  U.S.A.

otherwise under any patent or patent rights of Analog Devices.                                     Tel: 617/329-4700           Fax: 617/326-8703

AD9830–SPECIFICATIONS1 (VDD = +5 V 6 5%; AGND = DGND = 0 V; TA = TMIN to TMAX; REFIN = REFOUT;

RSET = 1 kV; RLOAD = 51 V for IOUT and IOUT unless otherwise noted

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