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SSM2018:  Trimless Voltage Controlled Amplifier

Product Details

The SSM2018T represents the continuing evolution of the Frey Operational Voltage Controlled Element (OVCE) topology that permits flexibility in the design of high performance volume control systems. The SSM2018T offers voltage output and is laser-trimmed for gain core symmetry and offset. As a result, the SSM2018T is the first professional audio quality VCA to offer trimless operation.

Due to careful gain core layout, the SSM2018T combines the low noise of Class AB topologies with the low distortion of Class A circuits to offer an unprecedented level of sonic transparency. Additional features include differential inputs, a 140 dB gain range, and a high impedance control port. The SSM2018T provides an internal current-to-voltage converter; thus no external active components are required.

This device is offered in a 16-pin plastic DIP package and guaranteed for operation over the extended industrial temperature range of -40°C to +85°C.


  • 117 dB Dynamic Range
  • 0.006% Typical THD+N (@ 1 kHz, Unity Gain)
  • 140 dB Gain Range
  • No External Trimming Required
  • Differential Inputs
  • Complementary Gain Outputs
  • Buffered Control Port
  • I–V Converter On-Chip
  • Low External Parts Count
  • Low Cost

Functional Block Diagram for SSM2018

Evaluation Kits & Symbols & Footprints

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

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Price, packaging, availability

SSM2018 Model Options
Model Package Pins Temp.
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
SSM2018PZ Status: Last Time Buy 16 ld PDIP 16 Ind Tube, 25 $3.69 $3.33 Y  Material Info PCN/PDN Purchase
SSM2018TPZ Status: Last Time Buy 16 ld PDIP 16 Ind Tube, 25 $4.61 $4.16 Y  Material Info PCN/PDN Purchase
Price Table Help

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

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