• Two independent channels
• Wide dynamic range
• Wide gain range
• Exponential (dB) gain control
• Low distortion
• Wide supply voltage range
• Low supply current
• Dual control ports (pos/neg)
• Low cost
• Small Package (16-pin QSOP)

Design Guide for Substituting the THAT2162 for the ADI SSM2164
Analog Devices has discontinued their SSM2164 quad VCA. Our THAT2162 dual VCA is an alternative worth considering. Some of the issues which you’ll need to consider are addressed on our THAT Alternatives to the SSM2164 page.

Datasheet Download

Datasheet Download
2162 Series Datasheet (138kB)


• Faders
• Panners
• Compressors
• Expanders
• Equalizers
• Filters
• Oscillators
• Automation systems


The THAT 2162 contains two high-performance Blackmer® voltage-controlled amplifiers (VCAs). With two opposing-polarity, voltage-sensitive control ports, they offer wide-range exponential control of gain and attenuation with low signal distortion. Both VCAs are trimmed at wafer stage to deliver low distortion and control-voltage feedthrough without further adjustment. However, external symmetry adjustment is possible to further optimize distortion and control feedthrough for critical applications.

Key Specifications (see 2162 datasheet for complete specifications)
Parameter Conditions Min. Typical Max. Units
Dynamic Range > 118 dB
Gain Range > 130 dB
Total Harmonic Distortion 1V 0dB gain 0.05 %
Supply Current ± 15 V
± 5 V
Power Supply Voltage ± 2.25 ± 16 V
Order Number Pricing (1000) Min Order Quantity Reference
2162 16 pin QSOP 2162Q16-U $3.79 98 Request Samples
16 pin QSOP Tape and Reel 2162Q16-UR Contact us 2000
2162 Demo 2162DEMO $150.00 1
All 2162 parts are RoHS compliant. Minimum order quantity (MOQ) is one tube or one reel. Parts must be ordered in multiples of the MOQ. Samples are available to qualified applicants. Pricing is subject to change.** 2162 ICs are available on tape and reel for a modest increase in price and require an extended lead time. Please contact our sales department for pricing and current lead time.
Design Notes (as PDF files) Design Note 00A   Basic Compressor/Limiter Design (113k)

Design Note 01A   The Mathematics of Log-Based Dynamic Processors (64k)

Design Note 02   Digital Gain Control with Analog VCAs (106k) Design Note103/104   Improving VCA Performance I (56k) Design Note 106   What to look for when the Distortion in 2180s Doesn’t Match the Specs (57k) Design Note 107/111   A Simple Effective Soft-Knee Compressor / Limiter (81k) Design Note 110   Improving VCA Performance II and III (73k)

Design Note 116   Techniques for Stereo Volume Control (126k)

Design Note 117   Input Limited for ADCs (120k)

Design Note 120   VCAs in a Pan Potentiometer Application (127k)

Design Note 121   VCA Symmetry Auto-Trim Circuit

Design Note 122   5.1 Channel Volume Control (67k)

Design Note 123   Operating Log/Anti-log VCAs Off ±24V Supplies

Design Note 124   Interchanging the THAT218x and the THAT215x Series VCAs Design Note 127   Upgrading Modular VCAs Design Note 128   What’s a PTAT Temp. Coefficient, & Where Does It Come From?  (64k) Design Note 129   A Low-Cost VCA Limiter (47k) Design Note 130   VCA-Controlled 1st Order State Variable Filter (174k)

Design Note 137   Substituting THAT 218x VCAs for 215x VCAs in Existing Designs (68k)

Analog Secrets Your Mother Never Told You (1528k) Originally presented at the 123rd AES Convention, this seminar provides tips and techniques to achieve optimal performance in the analog signal path. Topics covered range from inputs (balanced line and mic level) to outputs (balanced to single-ended), and include analog signal processing (VCAs, RMS detection, and Analog Engines).

Related Products
Other Voltage Controlled Amplifiers (VCAs)
THAT 2180 Series Pre-trimmed Blackmer VCAs 2180 Series Datasheet
THAT 2181 Series Trimmable Blackmer VCAs 2181 Series Datasheet
Analog Engine® Dynamics Processors
THAT 4305 Low-cost basic Analog Engine for dual supply voltages 4305 Datasheet
THAT 4320 Low-voltage, low-power versatile Analog Engine for single supply voltages 4320 Datasheet
THAT 4315 Low-voltage, low-power basic Analog Engine for single supply voltages 4315 Datasheet
THAT 4316 Very Low-voltage, low-power basic Analog Engine for single supply voltages 4316 Datasheet

Additional Resources

2162 Demo Board – The THAT 2162 Demonstration System (US$100) allows the engineer to test the performance of a THAT2162 quickly and easily. The 2162 Demo Board is self-contained circuit board with XLR connectors for signal input and output and a 3-pin header for connection to an external regulated DC power supply (not included). See the 2162 Demo User’s Guide for more information.

2162 Surface Mount Adapter Board
– For our integrated circuits which are only available in surface mount packages THAT Corporation offers adapter boards which allow one of these surface-mount ICs to interface to a circuit board via traditional thru-hole mounting. These adapters make it easy for a design engineer to evaluate our surface-mount products on a prototype board without having to employ SMT technology. Adapter boards are available to qualified applicants.

Harsh Environment Packaging
– TT Semiconductor repackages THAT Corporation’s IC products in ruggidized plastic for the medical, aerospace, defense, and heavy industrial marketplaces.

The History of VCAs
– THAT Blackmer® VCAs are the successors to the original dbx® line of VCAs. Their development for professional audio use has a long history, and can provide some insight into the care and feeding of these essential devices.

2162 Material Data Declaration Sheet
Material Data Declaration Sheets (MDDS) disclose the hazardous materials in our integrated circuits as required by the European RoHS directive.