Product Details
●The AD9915 is a direct digital synthesizer (DDS) featuring a 12-bit DAC. The AD9915 uses advanced DDS technology, coupled with an internal high speed, high performance DAC to form a digitally programmable, complete high frequency synthesizer capable of generating a frequency-agile analog output sinusoidal waveform at up to 1.0 GHz. The AD9915 enables fast frequency hopping and fine tuning resolution (64-bit capable using programmable modulus mode). The AD9915 also offers fast phase and amplitude hopping capability. The frequency tuning and control words are loaded into the AD9915 via a serial or parallel input/output port. The AD9915 also supports a user defined linear sweep mode of operation for generating linear swept waveforms of frequency, phase, or amplitude. A high speed, 32-bit parallel data input port is included, enabling high data rates for polar modulation schemes and fast reprogramming of the phase, frequency, and amplitude tuning words.
●The AD9915 is specified to operate over the extended industrial temperature range.
●Applications
● Agile LO frequency synthesis
● Programmable clock generator
● FM chirp source for radar and scanning systems
● Test and measurement equipment
● Acousto-optic device drivers
● Polar modulator
● Fast frequency hopping
●### Features and Benefits
● 2.5 GSPS internal clock speed
● Integrated 12-bit DAC
● Frequency tuning resolution to 135 pHz
● 16-bit phase tuning resolution
● 12-bit amplitude scaling
● Programmable modulus
● Automatic linear and nonlinear frequency sweeping capability
● 32-bit parallel datapath interface
● 8 frequency/phase offset profiles
● Phase noise: −128 dBc/Hz (1 kHz offset at 978 MHz)
● Wideband SFDR < −57 dBc
● Serial or parallel input/output control
● 1.8 V/3.3 V power supplies
● See data sheet for additional features
