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Integrated Circuit - SSI2161, Single VCA, Sound Semiconductor

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SKU: P-Q-SSI2161
Item ID: 044441
Price: $5.45
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1 - 9$5.45
10 - 24$4.95
25 - 49$4.35
50 - 99$2.95
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A very high performance single-channel VCA for the most demanding applications, the
ProCircuit™ SSI2161 offers industry-leading lowest-noise, and a mode control to optimize noise vs. distortion performance. All at low-cost and in a 10-lead SSOP package.

The SSI2161 is a versatile VCA building block for high-performance audio applications. A single channel provides voltage control of current-mode inputs and outputs for a gain range from +20dB to –100dB, with control provided by a ground-referenced –33mV/dB constant.

The device offers considerable flexibility for a wide range of design goals and applications. A unique mode control allows selection of Class A, Class AB, or in-between using a single resistor. In addition, improved current handling allows use of lower value input resistors for reduced output noise without loss of headroom. Finally, the VCA can be used as a high-quality OTA building block for a variety of applications such as voltage controlled filters, exponential generators, and antilog converters.

The SSI2161 will operate on supplies as low as +8V for battery-powered devices such as guitar pedals, or up to ±18V in systems where maximum headroom is desired.

The SSI2161 is part of a family of affordable high-performance VCA’s from Sound Semiconductor. The SSI2164 offers four VCA’s in a compact SOP package with lowest cost-per VCA, and the SI2162 provides two channels in a small PCB footprint. For the dual version, see P-Q-SSI2162. For the quad version, see P-Q-SSI2164.


  • Our Highest Performance VCA in a Compact Package
  • Pin-Selectable Class A or AB Operation
  • 6dB Lower Noise than SSI2164
  • 126dB Dynamic Range (Class AB)
  • Low Distortion – Typical 0.025% (Class A)
  • Large Gain Range: -100dB to +20dB
  • Highly-Compact 10-Lead SSOP Package
  • ±4V to ±18V Operation
  • No External Trimming
  • Low Control Feedthrough – Typically -60dB
UPC/EAN: 841358114885
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