HSP45314

HSP45314 TM Data Sheet May 2000 File Number 4820.2 CommLinkTM Direct Digital Synthesizer 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 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 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. 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 Control Small 48-pin LQFP package Applications Programmable Local Oscillator FSK Modulation Direct Digital Synthesis Clock Generation Ordering Information PART NUMBER HSP45314VI TEMP. RANGE (oC) -40...