AD9852AST

GENERAL DESCRIPTION

The AD9852 digital synthesizer is a highly integrated device that uses advanced DDS technology, coupled with an internal high-speed, high-performance D/A converters and a comparator to form a digitally-programmable agile synthesizer function. When referenced to an accurate clock source, the AD9852 generates a highly stable, frequency-phase amplitude-programmable sine wave output that can be used as an agile L.O. in communications, radar, and many other applications. The AD9852’s innovative high-speed DDS core provides 48-bit frequency resolution (1 microHertz tuning steps). Phase truncation to 17 bits assures excellent SFDR.

FEATURES

300 MHz Internal Clock Rate
Integrated 12-Bit Output DACs
Ultrahigh-Speed, 3 ps RMS Jitter Comparator
Excellent Dynamic Performance: 80 dB SFDR @ 100 MHz
(±1 MHz) AOUT
4x to 20x Programmable Reference Clock Multiplier
Dual 48-Bit Programmable Frequency Registers
Dual 14-Bit Programmable Phase Offset Registers
12-Bit Amplitude Modulation and Programmable
Shaped On/Off Keying Function
Single Pin FSK and PSK Data Interface
Linear or Nonlinear FM Chirp Functions with Single
Pin Frequency “Hold” Function
Frequency-Ramped FSK
<25 ps RMS Total Jitter in Clock Generator Mode
Automatic Bidirectional Frequency Sweeping
SIN(x)/x Correction
Simplified Control Interface
10 MHz Serial, 2-Wire or 3-Wire SPI-Compatible or
100 MHz Parallel 8-Bit Programming
3.3 V Single Supply
Multiple Power-Down Functions
Single-Ended or Differential Input Reference Clock
Small 80-Lead LQFP Packaging

APPLICATIONS

Agile, L.O. Frequency Synthesis
Programmable Clock Generator
FM Chirp Source for Radar and Scanning Systems
Test and Measurement Equipment
Commercial and Amateur RF Exciter