●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
● Sin(x)/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
