SLOS930B November 2015 – November 2019 THS4541-Q1
PRODUCTION DATA.
The THS4541-Q1 input stage architecture is intrinsically robust to input overdrives with the series input resistor required by all applications. High input overdrives cause the outputs to limit into their maximum swings with the remaining input current through the Rg resistors absorbed by internal, back-to-back protection diodes across the two inputs. These diodes are normally off in application, and only turn on to absorb the currents that a large input overdrive might produce through the source impedance and or the series Rg elements required by all designs. Figure 12 and Figure 30 illustrate the exceptional output limiting and short recovery time for an input overdrive that is attempting to drive the outputs to two times the available swing.
The internal input diodes can safely absorb up to ±15 mA in an overdrive condition. For designs that require more current to be absorbed, consider adding an external protection diode such as the BAV99 device used in the example ADC interface design of Figure 80.