The CEM range of synth chips featured in numerous commercial and DIY synths in the 80’s before they ceased production. A number of the chips have been remanufactured by a Latvian electronics company and we delighted to be able to offer them through Soundtronics. Going forward, we will be designing synth modules using these chips.
The AS 3340 and AS 3345 are completely self-contained, precision voltage controlled oscillators, featuring both exponential and linear control scales and up to four buffered output waveforms: triangle, sawtooth, square, and pulse with voltage controllable pulse width. Full temperature compensation makes these VCOs extremely stable, and eliminates the need for a temperature compensation resistor. The highly accurate exponential and linear control inputs are virtual ground summing nodes, allowing multiple control voltages to be mixed within the device itself. The AS3345 has an additional square wave output at pin 7.
Also included are the provisions for hard and soft synchronization of the frequency, and an output for easy adjustment of high frequency tracking. Special care in the design ensures oscillation start-up under any power-on sequence and supply conditions.
Features
- Large Sweep Range: 500,000:1
- Fully Temperature Compensated
- Four Output Waveforms Available; No waveform trimming required
- Summing Node Inputs for Frequency Control
- High Exponential Scale Accuracy
- Low Temperature Drift
- Voltage Controlled Pulse Width
- Hard and Soft Sync Inputs
- Linear FM
- Buffered, Short Circuit Protected Outputs
- ±15 Volt Supplies