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ISL5314EVAL2 Datenblatt(PDF) 1 Page - Intersil Corporation |
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ISL5314EVAL2 Datenblatt(HTML) 1 Page - Intersil Corporation |
1 / 16 page 1 ® FN4901.2 ISL5314 Direct Digital Synthesizer The 14-bit ISL5314 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. 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 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. Block Diagram 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-pin LQFP packaging • Pb-Free plus anneal available (RoHS compliant) Applications • Programmable local oscillator • FSK, PSK modulation • Direct digital synthesis • Clock generation Pinout 48-PIN LQFP (Q48.7X7A) TOP VIEW Ordering Information PART # TEMP. RANGE (°C) PACKAGE PKG. DWG. # ISL5314IN -40 to 85 48 LQFP Q48.7x7A ISL5314INZ (See Note) -40 to 85 48 LQFP (Pb-free) Q48.7x7A ISL5314EVAL2 25 Evaluation Board NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. SINE ROM PHASE ACCUM. C(7:0) RESET CLK A(3:0) UPDATE ENOFR PH(1:0) WR WE IOUTA IOUTB INT REF REFIO REFLO DAC 14 BIT COMP1 COMP2 IN- IN+ WAVE ∑ + - SDATA SSYNC SCLK 1 2 3 4 5 6 7 8 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 9 10 11 12 13 14 15 16 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 A2 A3 PH0 PH1 SSYNC DVDD SCLK DGND DGND SDATA DVDD DGND C2 C1 C0 ENOFR DGND RESET UPDATE COMPOUT REFLO REFIO CLK DVDD ISL5314 Data Sheet July 28, 2005 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2000, 2005. All Rights Reserved All other trademarks mentioned are the property of their respective owners. |
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