AD9850 PDF Datasheet
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Description
This is 125 MHz Complete DDS Synthesizer. a
FEATURES 125 MH- Clock Rate On-Chip High Performance DAC and High Speed
Comparator DAC SFDR > 50 dB @ 40 MH- AOUT 32-Bit Frequency Tuning Word Simplified Control Interface: Parallel Byte or Serial
Loading Format Phase Modulation Capability 3.3 V or 5 V Single-Supply Operation Low Power: 380 mW @ 125 MH- (5 V) Low Power: 155 mW @ 110 MH- (3.3 V) Power-Down Function Ultrasmall 28-Lead SSOP Packaging
APPLICATIONS Frequency, Phase Agile Sine Wave Synthesis Clock Recovery and Locking Circuitry for Digital
Communications Digitally Controlled ADC Encode Generator Agile Local Oscillator Applications
CMOS, 125 MH- Complete DDS Synthesizer
AD9850
FUNCTIONAL BLOCK DIAGRAM
+VS GND
REF CLOCK IN
MASTER RESET
FREQUENCY UPDATE,
DATA REGISTER RESET
WORD LOAD CLOCK
HIGH SPEED DDS
32-BIT TUNING WORD
PHASE AND
CONTROL WORDS
FREQUENCY, PHASE DATA REGISTER
DATA INPUT REGISTER
SERIAL LOAD
PARALLEL LOAD
10-BIT DAC
DAC RSET
ANALOG OUT
ANALOG IN
COMPARATOR
CLOCK OUT CLOCK OUT
AD9850
1-BIT
.