The Intersil HSP45102 is Numerically Controlled Oscillator (NCO12) with 32-bit frequency resolution and 12-bit output. With over 69dB of spurious free dynamic range and worst case frequency resolution of 0. 009Hz, the NCO12 provides significant accuracy for frequency synthesis solutions at a competitive price. The frequency to be generated is selected from two frequency control words. A single control pin selects which word is used to determine the output frequency. Switching from one frequency to another occurs in one clock cycle, with a 6 clock pipeline delay from the time that the new control word is loaded until t4-he new frequency appears on the output. Two pins, P0-1, are provided for phase modulation. They are encoded and added to the top two bits of the phase accumulator to offset the phase in 90° increments. The 13-bit output of the Phase Offset Adder is mapped to the sine wave amplitude via the Sine ROM. The output data format is offset binary to simplify interfacing to D/A converters. Spurious frequency components in the output sinusoid are less than -69dBc. The NCO12 has applications as a Direct Digital Synthesizer and modulator in low cost digital radios, satellite terminals, and function generators.


  • 33MHz, 40MHz Versions
  • 32-Bit Frequency Control
  • BFSK, QPSK Modulation
  • Serial Frequency Load
  • 12-Bit Sine Output
  • Offset Binary Output Format
  • 0.009Hz Tuning Resolution at 40MHz
  • Spurious Frequency Components <-69dBc
  • Fully Static CMOS
  • Low Cost
  • Pb-Free Plus Anneal Available (RoHS Compliant)


  • Direct Digital Synthesis
  • Modulation
  • PSK Communications
  • Related Products HI5731 12-Bit, 100MHz D/A Converter


製品名 Part Status Pkg. Type Carrier Type MOQ 購入/サンプル
Last Time Buy SOICW Tube 26
Last Time Buy SOICW Tube 26
Last Time Buy SOICW Tube 26


タイトル language 分類 形式 サイズ 日付
star HSP45102 Datasheet データシート PDF 437 KB
PLC21035 - End of Life Notice Product Life Cycle Notice PDF 1.17 MB
PLC17019 - Q2 Cy 17 General PLC Notice Product Life Cycle Notice PDF 320 KB
PLC17007 - Q1 Cy 17 General Product Life Cycle Notice Product Life Cycle Notice PDF 292 KB
PCN12094 - Alternate Manufacturing Site for Assembly of the Listed Intersil Packaged Products - Amkor Technology, Philippines (ATP) 製品変更通知 PDF 98 KB
TB318: The NCO as a Stable, Accurate Synthesizer その他資料 PDF 263 KB