Hey Howard,
Sorry for the long delay, I was out of office all of last week. Glad you have been able to identify the problem! You could use the THS4502 or THS4503 as a drop in as long as you know the die temperature won't exceed 60C as per the warning…
Hello Howard, The THS4520 is packaged as QFN type which incorporates an exposed thermal pad/PowerPad which is located at the underside of the chip. The PowerPad is a concept where thermal conductive epoxy is used to attach the circuit die to the leadframe…
Bill Bordy,
The THS4520 has built in ESD protection. In the case where power in not on and the supplies are at ground, an input sigal will turn on the ESD protection devices at about a diode drop (0.7V to 1V). The characteristic of the signal determines…