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OA1MPA Datasheet(PDF) 19 Page - STMicroelectronics |
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OA1MPA Datasheet(HTML) 19 Page - STMicroelectronics |
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19 / 28 page ![]() DocID025992 Rev 1 19/28 OA1MPA, OA2MPA, OA4MPA Application information 28 4.6 Initialization time The OA1MPA, OA2MPA, and OA4MPA series of devices use a proprietary trimming topology that is initiated at each device power-up and allows excellent Vio performance to be achieved. The initialization time is defined as the delay after power-up which guarantees operation within specified performances. During this period, the current consumption (ICC) and the input offset voltage (Vio) can be different to the typical ones. Figure 22. Initialization phase The initialization time is VCC and temperature dependent. Table 7 sums up the measurement results for different supply voltages and for temperatures varying from -40 °C to 125 °C. 4.7 PCB layouts For correct operation, it is advised to add a 10 nF decoupling capacitors as close as possible to the power supply pins. Table 7. Initialization time measurement results VCC (V) Temperature: -40 °C Temperature: 25 °C Temperature: 125 °C Tinit (ms) ICC phase 1 (mA) Tinit (ms) ICC phase 1 (mA) Tinit (ms) ICC phase 1 (mA) 1.8 37 0.33 3.2 0.40 0.35 0.46 3.3 2.9 1.4 0.95 1.3 0.34 1.2 5 2.4 3.2 0.85 2.4 0.31 2.9 |
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