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.
| 芯片型号 | 产品状态 | 温度范围 | 封装尺寸图 | 潮湿敏感度等级MSL | 美元价格US $ |
| HSP45102SC-33 | 量产 | 民用级 | 28 Ld SOIC | 1 | 19.46 |
| HSP45102SC-33Z | 量产 | 民用级 | 28 Ld SOIC | 3 | 14.19 |
| HSP45102SC-40 | 量产 | 民用级 | 28 Ld SOIC | 1 | 17.75 |
| HSP45102SC-40Z | 量产 | 民用级 | 28 Ld SOIC | 3 | 16.96 |
| HSP45102SI-3396 | 量产 | 工业级 | 28 Ld SOIC T+R | 4 | 19.46 |
| HSP45102SI-33Z | 量产 | 工业级 | 28 Ld SOIC | 3 | 14.89 |
| HSP45102PC-33 | 停产 | 民用级 | 28 Ld PDIP | N/A | N/A |
| HSP45102PC-40 | 停产 | 民用级 | 28 Ld PDIP | N/A | N/A |
| HSP45102SC-3396 | 停产 | 民用级 | 28 Ld SOIC T+R | N/A | |
| HSP45102SI-33 | 停产 | 工业级 | 28 Ld SOIC | 1 | N/A |