The AD9956 is Analog Devices’s first AgileRF synthesizer. The device is comprised of a DDS and PLL circuitry. The DDS features a 14-bit DAC operating up to 400 MSPS and a 48-bit frequency tuning word. The PLL Circuitry includes a phase detector with scaleable 200 MHz inputs (pre-scalar inputs operate up to 650 MHz) and digital control over the charge pump current. The device also includes a 650 MHz PECL driver with programmable slew rates.The AD9956 uses advanced DDS technology, an internal high-speed, high performance D/A converter and an advance phase-detector/charge pump combination to enable the synthesis of digitally-programmable, frequency-agile analog output sinusoidal waveforms up to 2.7 GHz. The AD9956 is designed to provide fast frequency hopping and fine tuning resolution (48-bit frequency tuning word). Information is loaded into the AD9956 via a serial I/O port which has a device write speed of 25 MBit/sec. The AD9956 DDS block also supports a user defined linear sweep mode of operation. The AD9956 is specified to operate over the extended automotive range of −40°C to +125°C. Applications * Agile LO frequency synthesis * FM chirp source for radar and scanning systems * Automotive radars * Test and measurement equipment * Acousto-optic device drivers * 400 MSPS Internal DDS Clock Speed * 48-bit frequency tuning word * 14-bit Programmable Phase Offset * Integrated 14-bit DAC * Excellent Dynamic Performance * Phase noise ≤ 135 dBc/Hz @ 1 KHz offset * −80 dB SFDR @ 160 MHz (±100 KHz offset IOUT) * 25 Mb/s write-speed serial I/O control * 655 MHz programmable input dividers for the phase * frequency detector (÷M, ÷N) {M, N = 1..16} (bypassable) * Programmable RF divider (÷R) {R = 1, 2, 4, 8} (bypassable) https://elecena.pl/product/17774444/2-7-ghz-dds-based-agilerf-synthesizer 2021-04-17 https://elecena.pl/product/17774444/2-7-ghz-dds-based-agilerf-synthesizer 2025-01-20