QA461 Transducer Driver

2-Dec-2024: The QA461 it not available for order and will be replaced by the QA462. The QA462 will offer greater accuracy and more gain ranges for current sensing.  The QA461 is a general-purpose power amplifier designed to drive everything from speakers and other reactive loads you might encounter while developing your products. The output is fully protected against over-current and over-temperature, and has heavy -duty Schottky diodes on the output to help cope with output excursions beyond the supply rails.  The amplifier has a gain of 20 dB, and an output monitor with a gain of -20 dB, allowing you to monitor the output of the QA461. So, if you input a signal at -10 dBV, the amplifier output will be at 10 dBV, and the monitor port will show the signal across the load at -10 dBV.  The QA461 makes improvements to the QA460 in the area of output current measurement. On the QA460, there was a 0.01 ohm sense resistor in series with the output, and the differential signals across that s