Datasheet Analog Devices AD9830 — 数据表

a DIRECT DIGITAL SYNTHESIZER,
WAVEFORM GENERATOR AD9830
FEATURES
+5 V Power Supply
50 MHz Speed
On-Chip SINE Look-Up Table
On-Chip 10-Bit DAC
Parallel Loading
Power-Down Option
72 dB SFDR
250 mW Power Consumption
48-Pin LQFP GENERAL DESCRIPTION APPLICATIONS
DDS Tuning
Digital Demodulation A power-down pin allows external control of a power-down
mode. The part is available in a 48-pin LQFP package. This DDS device is a numerically controlled oscillator employing 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 50 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. Similar DDS products can be found at
http://www.analog.com/DDS. FUNCTIONAL BLOCK DIAGRAM
AVDD AGND REFOUT DVDD DGND MCLK ON-BOARD
REFERENCE FSELECT FREQ0 REG …