The source impedance in general should be as low as possible, the lower the im-
pedance from which the icOn TVC is operated the lower the distortion and the
wider the e
ff
ective bandwidth.
At the highest source impedance point the bandwidth may be somewhat com-
promised and distortion will rise. The sensible upper limit of impedance is
around 10 kOhm, this causing a -1db point of 20Hz. However, in the interest of
overall performance it is strongly recommended to keep the drive impedance to
the icOn TVC as low as is practical.
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4
icOn Smart TVC preamplifier
