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. Applications Agile L.O. frequency synthesis FM chirp source for radar and scanning systems Automotive radars Test and measurement equipment Acousto-optic device drivers
The AD9956 is specified to operate over the extended automotive range of −40°C to +125°C.
Features and Benefits
| RF & MicrowaveAD9956 IBIS Models |
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AD9956: 400 MSPS 14-Bit DAC 48-Bit FTW 1.8 V CMOS DDS Based AgileRF™ Synthesizer Data Sheet (Rev. A) | PDF 779 kB |
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Introducing Digital Up/Down Converters: VersaCOMM™ Reconfigurable Digital Converters | PDF 63 kB |
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Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
---|---|---|---|---|---|---|
AD9956YCPZ Production | 48 ld LFCSP 7x7mm (5.1EP) | OTH 260 | -40 to 125C | 21.56 | 18.32 | Y |
Part Number | Description | Price | RoHS |
---|---|---|---|
AD9956/PCB | Evaluation Board | -1 | N |
AD9956-VCO/PCBZ | Evaluation Board | 500 | Y |