FEATURES 300 MHz Internal Clock Rate Integrated 12-Bit Output DAC Ultrahigh-Speed, 3 ps RMS Jitter Comparator Excellent Dynamic Performance: 80 dB SFDR @ 100 MHz (61 MHz) AOUT 43 to 203 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 Simpli?ed 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, Quadrature L.O. Frequency Synthesis Programmable Clock Generator FM Chirp Source for Radar and Scanning Systems Test and Measurement Equipment Commercial and Amateur RF Exciter GENERAL DESCRIPTION The AD9854 digital synthesizer is a highly integrated device that uses advanced DDS technology, coupled with two internal high-speed, high-performance quadrature D/A converters and a comparator to form a digitally-programmable I and Q synthesizer function. When referenced to an accurate clock source, the AD9854 generates highly stable, frequency-phase-amplitudeprogrammable sine and cosine outputs that can be used as an agile L.O. in communications, radar, and many other applications. The AD9854’s innovative high-speed DDS core provides 48-bit frequency resolution (1 microHertz tuning steps). Phase truncation to 17 bits assures excellent SFDR. The AD9854’s circuit
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深圳德田科技有限公司
Shenzhen Spring Technology Co.,Ltd
地址：深圳市福田区振华路122号海外装饰大厦A座211室
Shenzhen futian district zhenhua road 122 overseas decoration building, room 211, block A, 518031
李先生
电话（Tel）：(+86-755) 8350 5153
传真（Fax）：(+86-755) 8350 2530
邮箱: info@dt-ic.com
网址：www.dt-ic.com
