Do you want to experiment with Sound Semiconductor’s SSI2131 VCO chip? This PCB is designed to let you do just that!

This small board measures 23mm x 45mm and contains an SSI2131 and all the components required for generating saw, triangle and pulse audio waves from the SSI2131 VCO chip. The board supplies all the required voltages needed by the SSI2131 and also provides external taps for the +2.5V reference voltage and +5V.

Two trim pots are available for calibrating scale and high frequency 1V/Oct response.

The design of the board closely matches the reference design in the SSI2131 datasheet. To start generating output just add +12V, -12V and GND voltage supplies as well as input to the EXPO_FREQ input and PWM. Per the datasheet, supply any desired bias to EXPO_FREQ.

This kit has all SMD components already pre-soldered, so there are only a few through hole components needed to be soldered to complete the assembly.

Links

Build Guide – Assembling The SSI2131 Prototyping Board | SSI2131 Datasheet

Use the online calculator below to tune the SSI2131 Prototyping Board or any other VCO using the SSI2131:

• SSI2131 Tuner Calculator
• SSI2131 Prototyping Board Schematic
• SSI2131 Prototyping Board pin layout
• Scaling the SSI2131 Prototyping Board Output