Description
400 MSPS 14-Bit, 1.8 V CMOS Direct Digital Synthesizer AD9954 .
3 AD9954.
Electrical Specifications 4 Absolute Maximum Ratings 7 Pin Configurations 8 Pin Function Descriptions 9 Typical Performance Chara.
Features
* 400 MSPS internal clock speed Integrated 14-bit DAC Programmable phase/amplitude dithering 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 Ultrahigh speed analog comparator
Applications
* Agile LO frequency synthesis Programmable clock generator FM chirp source for radar and scanning systems Automotive radar Test and measurement equipment Acousto-optic device drivers
FUNCTIONAL BLOCK DIAGRAM
FREQUENCY ACCUMULATOR
DELTA FREQUENCY TUNING WORD
DDS CORE 32 RAM DATA 32
FREQUENCY TUNING