LM359
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SNOSBT4C –MAY 1999–REVISED MARCH 2013
The DC input voltage at each input is a transistor VBE(≃ 0.6 VDC) and must be considered for DC biasing. For
most applications, the supply voltage, V+, is suitable and convenient for establishing IIN(+). The inverting input
bias current, Ib(−), is a direct function of the programmable input stage current (see OPERATING CURRENT
PROGRAMMABILITY (ISET)) and to obtain predictable output DC biasing set IIN(+) ≥ 10Ib(−).
The following figures illustrate typical biasing schemes for AC amplifiers using the LM359:
Figure 25. Biasing an Inverting AC Amplifier
Figure 26. Biasing a Non-Inverting AC Amplifier
Figure 27. nVBE Biasing
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