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The ICL8038 waveform generator was an Integrated circuit by Intersil designed to generate accurate sine, square & triangular waveforms based on bipolar monolithic technology involving Schottky barrier diodes. Triangular waves were produced by charging and discharging a capacitor with constant currents. The triangular waves were converted to sine waves involving a non-linear network of transistors and thin-film resistors. The output frequency was set by resistors or capacitors and covered a range from 0.001 Hz to more than 300 kHz. An external control voltage would accomplish frequency sweeping or frequency modulation. The temperature drift could be optimized to less than 250ppm/°C by combining it with a PLL. Maxim designed a copy of the ICL8038 and marketed it as the MAX038. Both devices have since been discontinued. ==Features== • Low Frequency Drift with Temperature. . . . . . .250ppm/oC • Low Distortion. . . . . . . . . . . . . . . . 1% (Sine Wave Output) • High Linearity . . . . . . . . . . . 0.1% (Triangle Wave Output) • Wide Frequency Range . . . . . . . . . . . 0.001Hz to 300kHz • Variable Duty Cycle . . . . . . . . . . . . . . . . . . . . . 2% to 98% • High Level Outputs . . . . . . . . . . . . . . . . . . . . . . TTL to 28V • Simultaneous Sine, Square, and Triangle Wave Outputs • Easy to Use - Just a Handful of External Components 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「8038 ic」の詳細全文を読む スポンサード リンク
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