The ADS111x-Q1 are fabricated in a small-geometry, low-voltage process. The analog inputs feature protection diodes to the supply rails. However, the current-handling ability of these diodes is limited, and the ADS111x-Q1 can be permanently damaged by analog input voltages that exceed approximately 300 mV beyond the rails for extended periods. One way to protect against overvoltage is to place current-limiting resistors on the input lines. The ADS111x-Q1 analog inputs can withstand continuous currents as large as 10 mA.