Representing a fourth product iteration, the PA44X series provides next generation performance based on the PA34X product family (no longer supported for design in). These new IC designs leverage improvements in a specialty high voltage process to provide a staggering 96 percent reduction in signal noise and an equally impressive 2X improvement on offset voltage. For piezo positioning applications, a low noise rating of 12µV RMS at 20kHz bandwidth (Cc = 68pF) makes the PA441DF/PA441DW/PA443DF the amplifiers of choice to drive high voltage, fine motion systems. In terms of offset voltage performance, 5mV at 25°C typical is the new specification, with just 20mV at full operating temperature range (-40°C to +125°C).
All three ICs operate on a wide voltage supply ranging from ±10V to ±175V, and up to ±330V in bridge configuration. This level of performance is still considered an industry best for a power amplifier IC. The PA441DF/PA441DW are single channel models and will deliver 60mA of output current continuously, and up to 120mA PEAK, while exhibiting a very low 2.2mA of quiescent current. The dual-channel PA443DF will double the output current performance.