AD9854ASTZ
ANALOG DEVICES AD9854ASTZ 芯片, 正交频率合成器 DDS 300MSPS
The 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.
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- 300MHz internal clock rate
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- FSK, BPSK, PSK, chirp, AM operation
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- Dual integrated 12-bit digital-to-analog converters DACs
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- Ultrahigh speed comparator, 3ps rms jitter
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- Excellent dynamic performance 80dB SFDR at 100MHz ±1MHz AOUT
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- 4x to 20x Programmable reference clock multiplier
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- Dual 48-bit programmable frequency registers
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- Dual 14-bit programmable phase offset registers
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- 12-bit Programmable amplitude modulation and
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- ON/OFF output shaped keying function
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- Single-pin FSK and BPSK data interfaces
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- PSK capability via input/output interface
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- Linear or nonlinear FM chirp functions with single-pin
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- frequency hold function
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- Frequency-ramped FSK
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- <25ps RMS total jitter in clock generator mode
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- Automatic bidirectional frequency sweeping
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- Sinx/x correction
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- 10MHz Serial 2- or 3-wire SPI compatible
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- 100MHz Parallel 8-bit programming