The ICL8038 waveform generator was an Integrated circuit by Intersil designed to generate sine, square and triangular waveforms, based on bipolar monolithic technology involving Schottky barrier diodes. ICL8038 was a voltage-controlled oscillator:434 capable of producing frequencies between a millihertz and 100kHz.:2, some specimens capable of reaching 300kHz.:1 The device has been discontinued by Intersil in 2002.:1
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.:4 The output frequency was set either by resistors or the external control voltage.:6 The temperature drift could be optimized to less than 250ppm/°C by combining it with a PLL.:1
- Santo, Brian (1 May 2009). "25 Microchips That Shook the World". IEEE Spectrum: Technology, Engineering, and Science News. Institute of Electrical and Electronics Engineers. Retrieved 7 January 2019.
- "Precision Waveform Generator/Voltage Controlled Oscillator". Archived from the original on 7 January 2019. Retrieved 7 January 2019.
- Horowitz, Paul; Hill, Winfield (9 April 2015). The art of electronics (Third ed.). Cambridge University Press. ISBN 9780521809269.
- "ICL8083 Datasheet" (PDF). 5 February 2012. Archived from the original (PDF) on 7 January 2019. Retrieved 7 January 2019.