ISL5314: Direct Digital Synthesizer

The 14-bit ISL5314 provides a complete Direct Digital Synthesizer (DDS) system in a single 48 Ld 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. A 40-bit frequency tuning word can also be loaded via an asynchronous serial interface. Modulation control is provided by 3 external pins. The PH0 and PH1 pins select phase offsets of 0°, 90°, 180° and 270°, 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 (UPDATE pin.

Key Features
  • 125MSPS output sample rate with 5V digital supply
  • 100MSPS output sample rate with 3.3V digital supply
  • 14-bit digital-to-analog (DAC) with internal reference
  • Parallel control interface for fast tuning (50MSPS control register write rate) and serial control interface
  • 48-bit programmable frequency control
  • Offset frequency register and enable pin for fast FSK
  • Small 48 Ld LQFP packaging
  • Pb-Free (RoHS compliant)
Applications
  • Programmable local oscillator
  • FSK, PSK modulation
  • Direct digital synthesis
  • Clock generation
Typical Diagram
Datasheets
TitleTypeUpdatedSizeOther Languages
ISL5314 DatasheetPDF17 Nov 2014274 KB
Design Files
TitleTypeUpdatedSizeOther Languages
ISL5314 Evaluation Board Layout FilesPDF06 Jun 2001704 KB
ISL5314 Evaluation Board Schematic FilesPDF06 Jun 2001334 KB
Software
TitleTypeUpdatedSizeOther Languages
ISL5314 Evaluation Board Software v4.2EXE19 Dec 20141.82 MB
User Guides
TitleTypeUpdatedSizeOther Languages
ISL5314EVAL2 User GuidePDF13 Nov 201447 KB
Order Information
Part NumberPackage TypeWeight(g)PinsMSL RatingPeak Temp (°C)RoHS Status
ISL5314IN48 Ld LQFP0.174482240
ISL5314INZ48 Ld LQFP0.174483260RoHS
ISL5314EVAL2N/A
ISL5314 Datasheet 17 Nov 2014
48 Ld LQFP ISL5314
ISL5314 IBIS Model 11 Nov 2014
ISL5314
ISL5314 Evaluation Board Layout Files 06 Jun 2001
ISL5314 Evaluation Board Schematic Files 06 Jun 2001
ISL5314 Evaluation Board Software v4.2 19 Dec 2014
ISL5314EVAL2 User Guide 13 Nov 2014