LT3469
Piezo Microactuator Driver
with Boost Regulator U FEATURES DESCRIPTIO Amplifier
в– Current Limit: В±40mA Typical
в– Input Common Mode Range: 0V to 10V
в– Output Voltage Range: 1V to (V
CC – 1V)
в– Differential Gain Stage with High Impedance Output
(gm Stage)
в– Quiescent Current (from V ): 2mA
CC
в– Unloaded Gain: 30,000 Typical The LTВ®3469 is a transconductance (gm) amplifier that can
drive outputs up to 33V from a 5V or 12V supply. An
internal switching regulator generates a boosted supply
voltage for the gm amplifier. The amplifier can drive
capacitive loads in the range of 5nF to 300nF. Slew rate is
limited only by the maximum output current. The 35V
output voltage capability of the switching regulator, along
with the high supply voltage of the amplifier, combine to
allow the wide output voltage range needed to drive a
piezoceramic microactuator. Switching Regulator
Generates VCC Up to 35V
в– Wide Operating Supply Range: 2.5V to 16V …