OA1NP datasheet(20/31 Pages) STMICROELECTRONICS

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OA1NP Arkusz danych(PDF) 20 Page - STMicroelectronics

Numer części	OA1NP

Szczegółowy opis	Rail-to-rail input and output

PDF	31 Pages

Scroll/Zoom	100%

Producent	STMICROELECTRONICS [STMicroelectronics]

Strona internetowa	http://www.st.com

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20 / 31 page

Application information

OA1NP, OA2NP, OA4NP

20/31

DocID025993 Rev 2

4.6

PCB layout considerations

For correct operation, it is advised to add 10 nF decoupling capacitors as close as possible

to the power supply pins.

Minimizing the leakage from sensitive high impedance nodes on the inputs of the OA1NP,

OA2NP, OA4NP series can be performed with a guarding technique. The technique consists

of surrounding high impedance tracks by a low impedance track (the ring). The ring is at the

same electrical potential as the high impedance node.

Therefore, even if some parasitic impedance exists between the tracks, no leakage current

can flow through them as they are at the same potential (see Figure 38).

Figure 38. Guarding on the PCB

OAxNP

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