Features: • 125MSPS Output Sample Rate with 5V Digital Supply• 100MSPS Output Sample Rate with 3.3V Digital Supply• 14-bit DAC with Internal Reference• Parallel Control Interface for Fast Tuning (50MSPS Control Register Write Rate)• 48-bit Programmable Frequency Contr...
HSP45314: Features: • 125MSPS Output Sample Rate with 5V Digital Supply• 100MSPS Output Sample Rate with 3.3V Digital Supply• 14-bit DAC with Internal Reference• Parallel Control Inter...
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• Programmable Local Oscillator
• FSK Modulation
• Direct Digital Synthesis
• Clock Generation
The 14-bit HSP45314 provides a complete Direct Digital Synthesizer (DDS) system in a single 48-pin LQFP package. A 48-bit Programmable Carrier NCO (numerically controlled oscillator) and a high speed 14-bit DAC (digital to analog converter) are integrated into a stand alone DDS.
The DDS of HSP45314 accepts 48-bit center and offset frequency control information via a parallel processor interface. Modulation control is provided by 3 external pins. The PH0 and PH1 pins select phase offsets of 0, 90, 180 and 270 degrees, while the ENOFR pin enables or zeros the offset frequency word to the phase accumulator.
The parallel processor interface of HSP45314 has an 8-bit write-only data input C(7:0), a 4-bit address A(3:0) bus, a Write Strobe (WR), and a Write Enable (WE). The processor can update all registers simultaneously by loading a set of master registers, then transfer all master registers to the slave registers by asserting the UPDATE pin.