The VCLFO 9D is a simple-to-use 0-5V voltage-controlled LFO chip with many more features than your average LFO. For a start, it can produce 7 basic waveforms, and also includes a noise source. It can also distort its waveforms under CV control, well beyond basic PWM.
There is an optional sample-and-hold module that can sample whatever is selected, the current waveform or the noise source. The LFO frequency, waveform selection, waveform distortion, and S&H rate are all voltage-controlled using 0-5V. The overall output level is also voltage-controlled.
The datasheet includes example circuit diagrams, example waveforms, and the chip pinout diagram.
For further details, please see the VCLFO Project page
Obsolete! This chip has been superseded by the VCLFO 10
The new chip adds several features, has additional waveforms and improved resolution, and also no longer requires a crystal. It’s an improvement in pretty much every way! Head over and check out the data sheet.