ANALOG DEVICES AD9915BCPZ Direct Digital Synthesizer, 12-Bit DAC, 2.5 GSPS, 1.71 to 1.8 V, -40 to 85 Deg C, LFCSP-EP-88

AD9915 is a direct digital synthesizer (DDS) featuring a 12bit DAC. It 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 analogue output sinusoidal waveform at upto 1GHz. It enables fast frequency hopping and fine tuning resolution (64bit capable using programmable modulus mode). It also offers fast phase and amplitude hopping capability. The frequency tuning and control words are loaded into the device via a serial or parallel input/output port. It also supports a user defined linear sweep mode of operation for generating linear swept waveforms of frequency, phase or amplitude. It is used in applications such as 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.

• 2.5GSPS internal clock speed
• Frequency range (rise time, 20% to 80%) is 1350ps typical at (10pF load, TA = 25°C)
• 16bit phase tuning resolution, 12bit amplitude scaling
• Programmable modulus, automatic linear and nonlinear frequency sweeping capability
• 32bit parallel datapath interface, 8 frequency/phase offset profiles
• Wideband SFDR (122.5MHz output) is -67dBc typ at (0MHz to 1250MHz)
• Serial or parallel input/output control, 1.8V/3.3V power supplies
• Software and hardware controlled power-down, PLL REF CLK multiplier
• Phase modulation capability, amplitude modulation capability, multichip synchronization
• Operating temperature range from -40°C to +85°C, package style is 88-lead LFCSP