Features and Benefits
- 400 MSPS internal clock speed
- Integrated 14-bit DAC
- 32-bit tuning word
- Phase noise ≤ –120 dBc/Hz at 1 kHz offset (DAC output)
- Excellent dynamic performance:
>80 dB SFDR at 160 MHz (±100 kHz offset) AOUT
- Serial input/output (I/O) control
- 1.8 V power supply
- Software and hardware controlled power-down
- 48-lead TQFP/EP package
- PLL REFCLK multiplier (4× to 20×)
- Internal oscillator, can be driven by a single crystal
- Phase modulation capability
- Multichip synchronization
The AD9953 is a direct digital synthesizer (DDS) featuring a 14-bit DAC operating up to 400 MSPS. The AD9953 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 200 MHz. The AD9953 includes an integrated 1024 × 32 static RAM to support flexible frequency sweep capability in several modes. The AD9953 is designed to provide fast frequency hopping and fine tuning resolution (32-bit frequency tuning word). The frequency tuning and control words are loaded into the AD9953 via a serial I/O port.
The AD9953 is specified to operate over the extended industrial temperature range of –40°C to +105°C.
- Agile VHF/UHF LO frequency synthesis
- FM chirp source for radar and scanning systems
- Nonlinear-shaped PSK/FSK modulator
- Test and measurement equipment
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.
Application Notes (20)
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.
Technical Articles (21)
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.
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