As the company explains, the new SSI2130 VCO provides unprecedented performance and features for electronic music systems, audio function generators, or other devices that require high-integrity audio waveforms. Based on a precision-generated triangle core, the SSI2130 also produces saw, reverse saw, pulse with width control, and open-collector square wave outputs. Great care was taken to provide glitch-free waveforms.
In addition to buffered voltage outputs, the triangle, saw, and pulse signals are internally routed to a five-channel VCA mixer with two auxiliary inputs. The mixer output is current-mode for easy summing with additional SSI2130 VCO’s and connection to current-input voltage controlled filters such as the SSI2140 and SSI2144.
The SSI2130 also includes a sine shaper that provides a low-distortion sine wave from the triangle output, and a unique “time reverse” pin enables through-zero FM and PM synthesis with the addition of comparator, dual op amp, and handful of discrete components.
The analog multiplier has excellent exponential performance over a ten-plus octave range, and on-chip temperature compensation outperforms all previous VCO IC’s. Exponential input setup is easily accomplished through one or two trims in analog systems, or automated by CPU-based systems. Both hard and soft sync are offered.
"Our design team has been anxious to develop a new-generation VCO," adds Dan Parks. "We knew the SSI2130 was going to be good, but it greatly exceeded expectations."
The SSI2130 is in stock now, packaged in a 32-lead QFN package and requires minimal external components. Pricing is $2.25 at 1k pieces. Samples and an evaluation board are available to qualified OEM’s; hobby and DIY enthusiasts are served through a growing network of Sound Semiconductor’s authorized resellers.
With a passion for audio and music creation, Sound Semiconductor is working with the goal of developing affordable, high-performance integrated circuits for electronic musical instruments, effects, signal processors, mixers, etc., and help brands and manufacturers to design new audio products.