The SSM2018T/SSM2118T are high performance audio-grade voltage controlled amplifiers from SSM company. It features Frey topology, low noise, low distortion, 140dB gain range and 117dB dynamic range.
The SSM2018T and SSM2118T are professional audio quality Voltage Controlled Amplifiers (VCA) representing the evolution of the Frey Operational Voltage Controlled Element (OVCE) topology. The SSM2018T offers voltage outputs with an on-chip I-V converter, while the SSM2118T provides differential current outputs for low-noise summing. Both devices are laser-trimmed for gain core symmetry and offset, requiring no external trimming.
| Dynamic Range | 117 dB |
|---|---|
| Total Harmonic Distortion plus Noise | 0.006% Typical |
| Gain Range | 140 dB |
| Operating Temperature Range | -40°C to +85°C |
| Supply Voltage Range | +/- 15V to +/- 18V |
| Supply Current | 11 to 15 mA |
| Gain Bandwidth (VCA Configuration) | 0.7 MHz |
| Slew Rate | 5 V/us |
No, the SSM2018T and SSM2118T are laser-trimmed for gain core symmetry and offset, requiring no external trimming.
The SSM2018T provides voltage outputs with an internal current-to-voltage converter, while the SSM2118T offers fully differential current outputs.
The typical THD+N at 1 kHz and unity gain is 0.006%.