Datasheet LM258, LM358, LM358A, LM358E, LM2904, LM2904A, LM2904E, LM2904V, NCV2904 (ON Semiconductor) - 9

ManufacturerON Semiconductor
DescriptionSingle Supply Dual Operational Amplifiers
Pages / Page14 / 9 — LM258, LM358, LM358A, LM358E, LM2904, LM2904A, LM2904E, LM2904V, NCV2904. …
Revision32
File Format / SizePDF / 140 Kb
Document LanguageEnglish

LM258, LM358, LM358A, LM358E, LM2904, LM2904A, LM2904E, LM2904V, NCV2904. LM358. Figure 15. Function Generator

LM258, LM358, LM358A, LM358E, LM2904, LM2904A, LM2904E, LM2904V, NCV2904 LM358 Figure 15 Function Generator

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LM258, LM358, LM358A, LM358E, LM2904, LM2904A, LM2904E, LM2904V, NCV2904
VCC C R3 R1 C V - in 1/2 VO
LM358
+ CO R2 CO = 10 C Vref 1 V ref = VCC 2 Given: fo = center frequency A(fo) = gain at center frequency Choose value fo, C Q 1 Then: R3 = V Triangle Wave ref = VCC R2 f 2 o C Output R3 300 k R1 = Vref + 2 A(fo) R3 1/2 +
LM358
R1 R3 75 k 1/2 R2 = -
LM358
4Q2 R1 -R3 R1 100 k Square - Wave Q For less than 10% error from operational amplifier. o fo < 0.1 Vref Output BW C Where fo and BW are expressed in Hz. Rf R1 + RC R2 R1 If source impedance varies, filter may be preceded with voltage f = if, R3 = 4 CR R2 + R1 follower buffer to stabilize filter parameters. f R1
Figure 15. Function Generator Figure 16. Multiple Feedback Bandpass Filter www.onsemi.com 9