Direct Digital Synthesizers
Analog Devices introduces a new family of direct digital synthesizers (DDS). The chips deliver a 400 MHz clock speed. The devices synthesize frequencies of up to 160 MHz while dissipating less than 200 mW of power. The new DDS family comprises four new 14-bit devices with various added benefits: AD9951 is a basic DDS with on-board 14-bit ADC; AD9952 with a high speed comparator; AD9953 with RAM allows nonlinear phase/frequency sweeping; AD9954 with high-speed comparator, RAM, and automatic linear frequency sweep.