5.11

Overload recovery

Overload recovery is defined as the time required for the op amp output to recover from a saturated state to a

linear state.

The saturation state occurs when the output voltage gets very close to either rail in the application. It can happen

due to an excessive input voltage or when the gain setting is too high.

When the output of the TSZ18x enters in saturation state it needs 10 µs to get back to a linear state as shown in

Figure 58. Negative overvoltage recovery VCC = 5 V and Figure 59. Positive overvoltage recovery VCC = 5 V.

Figure 36. Negative overvoltage recovery VCC = 2.2 V and Figure 37. Positive overvoltage recovery VCC = 2.2 V

5.12

Phase reversal protection

Phase reversal is a specific behavior of an op amp where its output reacts as if the inputs were inverted when at

least one input is out of the specified common-mode voltage.

The TSZ18x has been carefully designed to prevent any output phase reversal. The TSZ18x is a rail-to-rail input

op amp, therefore, the common-mode range can extend up to the rails. If the input signal goes above the rail it

does not cause any inversion of the output signal as shown in Figure 60. No phase reversal.

If, in the application, the operating common-mode voltage is exceeded please read Section 5.3 Input pin voltage

ranges.

TSZ181, TSZ182

Overload recovery

DS11863 - Rev 5

page 23/43