SSM2018_15 Datasheet, PDF (1/16 Pages) Analog Devices – Trimless Voltage Controlled Amplifier

Data Sheet
FEATURES
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
GENERAL DESCRIPTION
The SSM2018 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 SSM2018 is laser trimmed for gain core
symmetry and offset. As a result, the SSM2018 is the first
professional audio quality VCA to offer trimless operation.
Due to careful gain core layout, the SSM2018 combines the low
noise of Class AB topologies with the low distortion of Class A
circuits to offer an unprecedented level of sonic transparency.
Trimless
Voltage Controlled Amplifier
SSM2018
FUNCTIONAL BLOCK DIAGRAM
SSM2018
V_C
G
+IN
GAIN
CORE
–IN
1–G
V_G
–I_G
V_1–G
–I_1–G
Figure 1.
Additional features include differential inputs, a 140 dB (−100 dB
to +40 dB) gain range, and a high impedance control port. The
SSM2018 provides an internal current-to-voltage converter.
Thus, no external active components are required.
This device is offered in 16-lead, plastic DIP package and
guaranteed for operation over the extended industrial
temperature range of −40°C to +85°C.
Rev. C
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone] ©2002–2013 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com