●The AD9854ASTZ is a Digital Synthesizer, highly integrated device that uses advanced DDS technology, coupled with two internal high speed, high performance quadrature DACs to form a digitally programmable I and Q synthesizer function. When referenced to an accurate clock source, the AD9854 generates highly stable, frequency-phase, amplitude-programmable sine and cosine outputs. Maintaining 17-bit ensures excellent SFDR. The circuit architecture of the AD9854 allows the generation of simultaneous quadrature output signals at frequencies up to 150MHz, which can be digitally tuned at a rate of up to 100 million new frequencies per second. The 12-bit I and Q DACs, coupled with the innovative DDS architecture, provide excellent wideband and narrow-band output SFDR.
● 300MHz internal clock rate
● FSK, BPSK, PSK, chirp, AM operation
● Dual integrated 12-bit digital-to-analog converters (DACs)
● Ultrahigh speed comparator, 3ps rms jitter
● Excellent dynamic performance 80dB SFDR at 100MHz (±1MHz) AOUT
● 4x to 20x 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 input/output interface
● Linear or nonlinear FM chirp functions with single-pin
● frequency hold function
● Frequency-ramped FSK
● <25ps RMS total jitter in clock generator mode
● Automatic bidirectional frequency sweeping
● Sin(x)/x correction
● 10MHz Serial 2- or 3-wire SPI compatible
● 100MHz Parallel 8-bit programming
