Analog Devices Inc. AD9914 Direct Digital Synthesizers
Analog Devices AD9914 3.5GSPS Direct Digital Synthesizers (DDS) feature advanced DDS technology coupled with an internal, high-performance, high-speed 12-Bit Digital-to-Analog Converter (DAC). These complete, digitally programmable, high-frequency synthesizers can produce a frequency-agile, analog-output sinusoidal waveform to 1.4GHz.
The AD9914 DDS allows fast-frequency hopping and fine-tuning resolution. Using the programmable modulus mode, AD9914’s fine-tuning is capable of 64-bit resolution. AD9914 also offers fast-phase and amplitude hopping capability. A serial or parallel input/output port loads the control words and frequency tuning on the AD9914.
AD9914 DDS supports a user-defined linear sweep mode of operation for generating linear swept waveforms of frequency, phase, or amplitude. AD9914’s high-speed, 32-bit parallel data input port allows high data rates for polar modulation schemes and fast reprogramming of the frequency, phase, and amplitude tuning words.
Features
- 3.5GSPS internal clock speed
- Integrated 12-bit DAC
- Frequency tuning resolution to 190pHz
- 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: −128dBc/Hz (1kHz offset at 1396MHz)
- Wideband SFDR <−50dBc
- Serial or parallel input/output control
- 1.8V/3.3V power supplies
- Software and hardware controlled power-down
- 88-lead LFCSP package
- PLL REF CLK multiplier
- Phase modulation capability
- Amplitude modulation capability
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
Functional Block Diagram
AD9914/PCBZ Evaluation Board
Analog Devices AD9914/PCBZ Evaluation Board helps designers evaluate the features of the AD9914 3.5GSPS Direct Digital Synthesizers with 12-bit DAC.
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Analog Devices Inc. AD9914S Direct Digital Synthesizer (DDS)
Capable of generating a frequency-agile analog output sinusoidal waveform at up to 1.4GHz.