AD9910 1 GSPS, 14-Bit, 3.3 V CMOS Direct Digital Synthesizer
Product Details
The AD9910 is a direct digital synthesizer (DDS) featuring an integrated 14-bit DAC and supporting sample rates up to 1 GSPS. The AD9910 employs an advanced, proprietary DDS technology that provides a significant reduction in power consumption without sacrificing performance. The DDS/DAC combination forms a digitally programmable, high frequency, analog output synthesizer capable of generating a frequency agile sinusoidal waveform at frequencies up to 400 MHz.
The user has access to the three signal control parameters that control the DDS: frequency, phase, and amplitude. The DDS provides fast frequency hopping and frequency tuning resolution with its 32-bit accumulator. With a 1 GSPS sample rate, the tuning resolution is ~0.23 Hz. The DDS also enables fast phase and amplitude switching capability.
The AD9910 is controlled by programming its internal control registers via a serial I/O port. The AD9910 includes an integrated static RAM to support various combinations of frequency, phase, and/or amplitude modulation. The AD9910 also supports a user defined, digitally controlled, digital ramp mode of operation. In this mode, the frequency, phase, or amplitude can be varied linearly over time. For more advanced modulation functions, a high speed parallel data input port is included to enable direct frequency, phase, amplitude, or polar modulation.
The AD9910 is specified to operate over the extended industrial temperature range.
Applications
- Agile local oscillator (LO) frequency synthesis
- Programmable clock generators
- FM chirp source for radar and scanning systems
- Test and measurement equipment
- Acousto-optic device drivers
- Polar modulators
- Fast frequency hopping
Features and Benefits
- 1 GSPS internal clock speed (up to 400 MHz analog output)
- Integrated 1 GSPS, 14-bit DAC
- 0.23 Hz or better frequency resolution
- Phase noise ≤ −125 dBc/Hz at 1 kHz offset (400 MHz carrier)
- Excellent dynamic performance with >80 dB narrow-band SFDR
- Serial input/output (I/O) control
- Automatic linear or arbitrary frequency, phase, and amplitude sweep capability
- 8 frequency and phase offset profiles
- Sin(x)/(x) correction (inverse sinc filter)
- 1.8 V and 3.3 V power supplies
- Software and hardware controlled power-down
- 100-lead TQFP_EP package
- Integrated 1024 word × 32-bit RAM
- PLL REFCLK multiplier
- Parallel datapath interface
- Internal oscillator can be driven by a single crystal
- Phase modulation capability
- Amplitude modulation capability
- Multichip synchronization