AD9852ASTZ

ANALOG DEVICES  AD9852ASTZ.  通信芯片, 频率合成

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 converter to form a digitally programmable, agile synthesizer function. When referenced to an accurate clock source, the AD9852 generates a highly stable frequency-, phase-, and amplitude-programmable cosine output that can be used as an agile LO in communications, radar, and many other applications. The innovative high speed DDS core of the AD9852 provides 48-bit frequency resolution 1 μHz tuning resolution with 300 MHz SYSCLK. Maintaining 17 bits ensures excellent SFDR.

FEATURES

  300 MHz internal clock rate

  FSK, BPSK, PSK, chirp, AM operation

  Dual integrated 12-bit D/A converters

  Ultrahigh speed comparator, 3 ps rms jitter

  Excellent dynamic performance 80 dB SFDR at 100 MHz ±1 MHz AOUT

  4× to 20× programmable reference clock multiplier

  Dual 48-bit programmable frequency registers

  Dual 14-bit programmable phase offset registers

  12-bit programmable amplitude modulation and on/off output shaped keying function

  Single-pin FSK and BPSK data interfaces

  PSK capability via I/O 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

  Sinx/x correction

  Simplified control interface

     10 MHz serial 2-wire or 3-wire SPI-compatible

     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 or TQFP with exposed pad

APPLICATIONS

  Agile LO frequency synthesis

  Programmable clock generator

  FM chirp source for radar and scanning systems

  Test and measurement equipment

  Commercial and amateur RF exciter