Dual Low Noise Voltage Controlled Amplifiers (VCA)
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AS3381 Dual Low Noise Voltage
Controlled Amplifiers (VCA) |
AS3381 is a dual low noise voltage controlled amplifier, with linear
scale, intended for applications requiring
high audio performance in
a small space. AS3381 contains two gain cells with extremely low noise
for signal-tonoise
ratio better than 100 dB, low distortion with less
than 0.3% THD, and low control feedthrough for "pop" free
performance
when gain modulated.
AS3381 is also extremely easy to use, requiring
few external components and no external trimming to meet
their
excellent performance. The signal inputs are summing node inputs for
convenient signal mixing; and the
control voltage inputs, covering
over 100dB with a 5 volt nominal range, are referenced to ground when
the
outputs feed virtual ground summing nodes. The current mode
outputs offer additional flexibility, allowing AS3381
to be used in
high performance VC filters and waveform generators as well as
amplifiers.
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FEATURES
- two high performance VCAs
- extremely low noise: >
100dB S/N ratio
- low distortion: <0.3% THD
- low feedthrough: <0.3% of
full scale output
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