Introduction
The New Focus Model 3211 High-voltage Amplifier
can be used as a versatile gain block in applica-
tions involving high-speed and high-voltage sig-
nals. The amplifier is extremely linear and can be
used to drive capacitive loads up to 100 nF with
peak voltages up to ±200 V. These features make
the device useful for driving electro-optic modula-
tors and piezo-electric transducers. For instance,
with the Model 400X Electro-optic Phase Modula-
tors, the Model 3211 can be used to provide a lin-
ear phase modulation of greater than
π
for fre-
quencies up to 1 MHz. The amplifier can also pro-
vide output current up to 120 mA.
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