Analog Devices Inc. (Norwood, MA) expanded the company's portfolio of radio frequency (RF) ICs with a new family of direct digital synthesizers (DDS). The new chips deliver a 400MHz clock speed at one-tenth the power consumption of previous solutions, enabling designers to use DDS for fast frequency hopping at higher output frequencies in more power-sensitive applications. Typical applications include satellite communications, broadband networking, radar, test and measurement, and instrumentation.
The new DDS devices synthesize frequencies of up to 160MHz while dissipating less than 200mW of power. The family comprises four new 14-bit devices and the AD9954 features a 14-bit digital-to-analog converter operating up to 400 MSPS, as well as a high-speed comparator, RAM, and automatic linear frequency sweep. The chip is digitally programmable and is a complete high-frequency synthesizer capable of generating a frequency-agile analog output sinusoidal waveform at up to160MHz. The AD9954 includes an integrated 1024x32 static RAM to support flexible-frequency sweep capability in several modes. The AD9954 also supports a user-defined, linear sweep mode of operation. The AD9954 is specified to operate over the extended industrial temperature range of –40°C to +85°C.
All parts are available now in 48-lead EPAD-TQFP packages and are priced per unit in 1,000-piece quantities at $13.75 for the AD9951, $15.50 for the AD9952, $14.75 for the AD9953, and $17.25 for the AD9954.
