Abstract
A 36V, precision monolithic waveform generator with symmetric triangle, square, and sine wave outputs is described. Peak-to-peak values of the triangle and sine waves are equal to 2/3∗Vsy, while the square wave output is referenced from an adjustable digital ground pin. The nominal frequency of all waveforms is set using one external capacitor and resistor. The architecture provides for both linear and exponential frequency control, with temperature drift trimmed to be less than 100ppm/°C. The exponential input is fully differential, and gives a frequency sweep range of 2,000,000:1. Even and odd harmonic distortion are trimmed so that the sine wave distortion measures less than 1% up to 200kHz. Asserting a TTL compatible strobe pin simultaneously disables all outputs.
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