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
- Software and hardware controlled power-down
- 88-lead LFCSP package
- PLL REF CLK multiplier
- Phase modulation capability
- Amplitude modulation capability
- Multichip synchronization
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.
- 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
Product Lifecycle Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (1)
The user guide describes how to set up and use the AD9915 evaluation board. The AD9915 is a 2.5 GSPS DDS with a 12-bit DAC.
The evaluation board provides a graphical user interface (GUI) for easy communication with the device along with many user friendly features such as the mouse-over effect.
The user guide is intended for use in conjunction with the AD9915 data sheet.
Tools & Simulations
ADIsimDDS uses mathematical equations to model and illustrate the overall performance of the selected device. ADIsimDDS calculates the required FTW, given the reference clock frequency and desired output frequency. This tool also models an estimate of the overall spectral performance, and allows the user to explore the effects of external reconstruction filters.
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
Support & Discussions
Sample & Buy
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